Use a Sound Meter:

A sound meter can save you lots of money.

The reason for a meter is because once you have your system done, it may take a big 4 times increase in amplifier power to see a slight 1 to 2 db increase in sound pressure level. think how much money it will take to 4 times the number of amplifiers you have! Much cheaper to buy a sound meter and re-tune and design your system better, noticing what changes in design makes your db level go higher with the use of a sound meter.
unless you have a lot of expireince you may not perceive this correctly. Furthermore, usually system changes cause resonant frequency changes.
This is important because, the human body does not accurately rate sound pressure level. Especially at different frequencies. I have had many people incorrectly guess the sound pressure level of a relatively low 138 db into thinking it was 150 db, because it was at very low 24 hz, instead of the usual 45 to 65 hz.
Similarly, a recent system I worked on was essentially flat down to 20 hz at 152 db, everybody was "sure" it was "at least 160db", the meter proved their guessing was wrong.
If your system is using a ported box, a sound meter will let you see how much slight changes in the length or size of your ports can make a big difference in your sound pressure level. Thanks to our company we have eliminated the problem of insane prices for high quality sound meters, stop the guessing, get a meter, email us for help on how.

Don't buy junk:

Do you ever go down the isles at the supermarket, and think to yourself "I wish they had a toothache or headache i could buy because i want to buy one?" NO you don't, no one wants to buy a toothache, well many times a junk brand piece of electronics are just like a toothache. So don't buy one! Junk brands means you or the neighborhood stereo shop Circuit City guys have never heard of it, or never heard it with your own ears, or the ears of a friend of yours. Just because something is low price does not mean it is junk! Sears, Walmart and many car parts stores have low price brands. Low price brands are better than the junk brands. For many people the low price brands are good enough, it works and sounds pretty good. Junk brands are like buying a toothache or a really bad headache. Stolen, lost, or dirty beat up radios from the swap meet, neighborhood parolee or crystal-meth freak with torn or missing wires out the back is also considered junk.

reason 1: junk usually costs almost the same as the good stuff or at least 80% of the price, which usually means if you just save your money for another month or so you can get the name brand or good stuff. I know not all of us are millionaires, and we got kids to support, so just buy the good stuff one piece of the system at a time every 3 or 4 months or so, time will go by and sooner than you think your going to have a really good system.

reason 2: Junk stuff breaks alot faster than the name brand stuff. If your impatient and cant wait another month your going to suffer when that junk brand you bought because you were in a hurry, BREAKS. And yes it will break and break soon. Oh ya, your going to be without a system until you can save up for the good name stuff, and chances are that is going to be alot longer than 1 month you should have waited to save for the good stuff anyway.

reason 3: If economic times get either bad(sell) or good (you want to upgrade your system), you will want to sell your system. If it is the good stuff you can sell it used for 35 % to 70 % of what you paid for it new, if it is the junk brand you probably will not even get 10 % to 20 % of what you paid even if your lucky, the reality is you probably won't even be able to sell it. It will just wind up sitting around your closet collecting dust.

reason 4. Sound quality is really not as good as the name brand stuff.

reason 5. No or superweak guarantee with the junk brand.

reason 6. Usually junk brand companies use junk brand ingredients (parts) to make their junk brand equipment. If your planning to get a hamburger, you don't go pull up to a Mcdonalds then go to the back dumpster and whip out a hamburger, it is the junk, for whatever reason Mcdonalds decided it is not up to their quality standards so the put it in the dumpster, well big factories do the same thing. Junk factories get the dumpster parts to make the junk brand stuff.

reason 7. The junk brand stuff leaves out 1 critical feature or ability that the good brand has in order to cut the 20% off of the good brand price. An annoying critical feature left out is secondary amplification on the C.D. deck units, in other words the decks push out a pitiful 1 or 2 watts RMS instead of the standard 17 to 25 RMS. They do this by not putting in secondary transistor amplifiers to cut the price. Another feature that is cut out is the fast forward on the CD play. Another feature you cant see is the radio clarity or the ability to pull in far radio stations, or the ability to lock in on 1 station at a time. No ipod or aux. inputs. No memory(s) or shuts off randomly.

reason 8. Joe 6 pack tells you he has installed a million car stereo systems, but really he just cut 2 out of an ex-girlfiend's car with a pocket knife. He tries to install your system and surprise surprise he does something wrong and blows something up... Name brand = usually will allow a return and gives you a new one(or repairs for free), junk brand= sorry, was not installed properly by an "authorized" dealer, no money, no return, now you own just an expensive BROKEN piece of junk. Joe 6 pack looks at you and says "you should'nt bought a piece of junk...well, I'm going to the store to get some more beer".

Car Batteries:

Did you know when you start your car, for a microsecond every ATOM on earth "feels" the electromagnet force!

They are very powerful devises. A normal 12 volt car battery has about 10,000 watts of available 1 second power, or about 50 to 100 AMPERES for about 20 to 60 minutes.

Converted to more understandable units, the energy in 1 battery could lift 310 TONS 1 foot off the ground!This is about 620,000 foot pounds of energy!

If it were possible, to get a battery to separate all it's positive and negative charges it would require a force of about 80,000,000,000,000,000 TONS!

A car battery is called 12 volts but is actually normally about 12.62 volts, a D.C. voltage summary can be approximated like this:
Overcharged = 14.41
Brand New charged = 13.95
Brand New sitting on shelf = 13.7 to 13.10
Good = 12.60 to 13.10
O.K. = 12.45 to 12.75
Weak = 12.20 to 12.45
Dieing(needs charging, acid or water) = 11.85 to 12.20
Dead (needs charging, acid or water) = 11.2 to 11.85
Irreversable (can no longer be charged or fixed) = 8 to 11.2
Dangerous (possible internal short don't be around this car battery) = 2 to 8

The true power flow from a car battery is not from the voltage however, it is from the AMPERAGE(the total flow of electrons). A normal car battery has about 800 AMPERES of instant current dumping ability. Taking the VOLTAGE(13) divided by the AMPERES(800) gives the OHMS (0.01625 Ohms), a battery has extremely low resistance, hence the high power dumping ability, also do not play with batteries with wet hands or in the rain!

The true test is with a AMPERE METER. You can buy them for around $40 to 70, its a voltmeter with a built in LOAD. The load is usually 100 AMPERES, or 500 AMPERE. you put the battery on the AMPERE METER, a needle arm shows voltage, then you push and hold a button for the load to start . You will see the needle arm voltage drop a little second by second, after 10 seconds you see where the needle arm is ,and it will say in CCA(COLD CRANKING AMPERES) ; new, strong, good, ok, charge, weak, service, broken. 500 CCA MINIMUM, 750 BETTER...1000 CCA IS AWESOME!!! PUTTING BATTERIES PARALLEL together raises the CCA!! Use a batter clamp meter CCA if you can because some when some batteries die they still show high volts like 12.9, but under load it dies instantly to 7 volts or something low like that.(this confuses alot of people even car mechanics). A cool dude told me something interesting also...air conditioners kill batteries at idle!! if your driving its ok.... but at idle thier batttery killers!!

1 new car engine starting engine battery is good for about 4000 watts RMS = 200 amperes constant. Then add another 1 solo alone battery is good for about 5000 watts RMS= 250 amperes constant. So about 1 ampere is 20 watts in real life amplifier battery testing.

Many people who compete in decibel contest use (two) 8 volt golf cart batteries in series. This gives an apparent voltage of 16 volts to each amplifier, but actually closer to 17.7 to 19.1 volts. You must find out if your amplifier is capable of this because many amplifiers cook and die at that high of an input voltage! Most will take 14.4 volts. Some use R.V. batteries. Some upgrade the alternator and or the voltage regulator of there car/ truck. Some use "batcaps" that have the ability to instantly dump amperage faster than batteries. If you need more power for your amplifiers, some people put another battery inside their loudspeaker box. If you want to do this just connect the battery to the engine battery, then using fat wire connect the amplifier to the inside the box battery, and always RED positive to RED positive and BLACK negative to BLACK negative wire or the clean car metal frame or car bolt (i.e. wire in parallel).You must brace the inside of the box with 2 by 4's so the battery does not slide around when you drive your car. Also put a huge fuse in between both batteries, like 100 AMPERE. NEVER put a battery inside a car where the people sit unless it is inside a very strong enclosed container (like a speaker box) because they can leak acid, fumes and may explode !

Please give your battery fat, fat, fat wires. the fattest you can afford. they dont have to be fancy or name brand just fat, like a garden hose!!! 1/0 or 00 gauge, or your amplifiers will be weak.

wire wire wire. FAT FAT FAT!!!! all your electronic wires should be FAT like a garden hose except the factory deck wires because they are made specifically for the deck and decks only need about 100 watts and 3 amperes of electricity. wire is rated in GAUGE numbers.the bigger the number the smaller the wire, so just remember ita backward like that. for normal powercords in your house that size wire is 18 gauge, 12 is thicker and carries more electricity better.big amps need at least 4 gauge that is like your pinky finger in thickness. bigger amps need 0 gauge which is FAT like your thumb, if you keep adding zero the wire is thicker like 000 gauge this is also written as 0/3 or 3/0 gauge , this is fat like a garden hose. the wire distance should be short.
BIG 3??? If your car headlights are dimming with your bass boom at night, then you need another BATTERY!!! if you have 2 batteries already and the headlights are still dimming.... then you get a bigger alternator or just a simple "variable regulator" upgrade for the same alternator your already using!!! " variable regulators" are cheap price.... if your a db freak then yes get an upgrade alternator...if you have a new car, runs good , no headlight dimming then your fine.... dont sweat the big alternator upgrade!!! At a world championship is saw a competitor with 32 alternators in his van!!!! and 32 BATTERIES!! phone call us for more secret info on alternators!!! hahaha!!

Dont be annoying!:

like Hawaii (ALL BOOMING AND SYSTEMS ARE OUTLAWED!!!!THE POLICE TAKE THEM)

Don't go deaf!!!:

loud db is bad for your ears!:

Hearing aids are NOT sexy or attractive or cheap. Only you can decide if you want to trade in your 2000 watt sound amplifiers for hearing aids(just another 0.001 watt amplifier).
We recommend that you limit the amount of time you spend listening to loud music to 1 or 2 songs per day(usually no ringing if not to loud 100 to 125 db bass only), or just wear earplugs and turn it up to feel the vibrations beat you up. The level of damage is also changes with frequency. From hundreds of people it has also been determined that frequencies below 40 hertz can be about 10db louder than bass above 40 hertz. This is very important because most of the top of the line woofers can play significantly large amounts of power below 40 hertz. Bass below 30 hz can be about 120db, and 20 hz about 130db, and 10 HZ at 140db!!!!(if you can be so rich or lucky!!H.U.R.R.I.C.A.N.E. AIR FLOW!). So if your system has an equalizer booster or bass frequency controller, you can shift the bass frequency lower(below 40 hertz) you can get more vibration AND at the same time be safer for your ears. We also agree with everybody else that an electric guitar solo frequencies( 1 to 4 kilo hertz) are really bad for your hearing, but equally there is no way that over +120 db bass can be good for you. Ipods can also be bad for your hearing, if there to loud. Remember, you can always buy new amps and speakers but you cant buy new ears. If your ears are ringing, sometimes a medicine called "lipoflavinoid" can help make it go away. If you really want the bass pounding, we can get you music bass vibrators that pound and beat the stuffing out of you, but are not that dB meter loud or damaging to your hearing. They are special pure vibrators, not speakers, but they might chip your chattering teeth!

Loudspeakers:

Surprisingly, low cost woofers can sometimes sound very good musically. the loudspeaker engineer knows that if he has a tiny magnet, he will have to use a tiny (light) speaker coil. Light coils are very responsive to frequency changes and higher bass frequencies like a bass drum at 100 hz. this makes a very clean sound, even though it may not be very loud.Also a low cost speaker design will usually be made "very tight", i.e. the voice coil gap is very tight and narrow and small,this typically increases sensitivity (db/watt) and musical cleanliness.

talk to us first before getting speakers but here are some speakers, will add more soon, serious woofers and reasons why:
AURA- knew the designer, uses chewing gum thin wafer flat neo magnet for huge excursion.
ADIRE- brahma, tumult, wicked fat top plate 2 inches thick, near full power it can almost lift itself off the ground.
AMERICAN BASS-good stuff at reasonable price.
ATOMIC-apocalypse, plugs into 240volt wall for 30 seconds and lives!!any more questions? ATOMIC-apx, xxx, more or less like i said above.
ALPINE- type x, wont rip your head off, but music sounds great, type r are good also, but 19mm xmax limits potential hurricane ability.
BOWERS AND WILKINGS- high sound quality for audiophiles
CERWIN VEGA- stroker pro, ripping heads off for 30 years with 40mm of linear one way xmax. Experience 52 large L-36 bassbins at a los angeles niteclub and you will learn alot of new things about yourself!
CRITICAL MASS-ul12, our design, voted best speaker in the world by many car audio magazines, awesome sq and super db levels.
D & B AUDIOTECHNIQUE -at a rave with 8 of their sub218 B22 and rocked my world, VERY large and expensive $12000 each. measured a rave quad stack wall doing 155dB+ rather easily and still superclean!
DC-level 5 + 6, quad magnets + 4 inch coils, db guys also use these 4 stack magnets
DIGITAL DESIGNS- zz18 and 9900, radial neo magnet design, world record high db levels 176+
EARTHQUAKE - Holees, a really big heavy woofer if you can lift it?123 pounds!, and rated at 10000 rms, subzero are not cheap but are awesome
ELECTROVOICE- EVM and L series professional loud and clean.
Fi- BTL , NEO-X, cool designs, similar with RE, very high quality; construction, sq and db.
INCRIMINATOR AUDIO- really big 4 stacker magnets and long excursion as a goal
INFINITY- good tweeters and mids.
HYPERDYNAMICS-MAKEITLOUDER.COM-Invented and patented the multiple gap, multiple coil system, octagon, 8 coils with multiple wire options including 0.125 ohm or 8 amplifiers, xtc1 has 99% 99% efficiency at resonance, xtc4 has insane power handling.
JL-13W7 properly installed with a big box a jl hd1200 amp with no subsonic filter will move like a tazmanian devil on crystal meth, but really goofy:( 1.5 ohm? and little to zero customer support, 1 good thing is the HD1200 amp is pretty bad a$$ if your rich. if you say JL is the best your wrong, if you say JL dog crap your wrong. i like em.
JBL-4882, 18 inch with 90mm excursion, any more questions? JBL-ddd differential woofer, clean and high db, our design.
KICKER- solo x, large power,large magnet.also two twelve L7 can hit about 145-150db.square shape increases output slightly.Unfortunately reconing these is very hard because no replacement parts
L'ACOUSTICS- ks56, another rave rocker, very nice and dont forget very expensive. computer integrated amplifiers and speakers
MAGNAPAN MAGNAPLANER-uses electrified saran wrap for heavenly cloudlike sound mids and highs. If you can get some, go do it , get some!
MARTIN- Stadium stuff from london, bassbin 218 hits your chest like godzilla collecting a gambling debt!
MARTIN LOGAN - sound quality audiophile stuff for the house, sounds very realistic, clear and clean
MASSIVE - car stereo speakers which are ironically "massive", hahaha...
MB QUART- good tweeters and mids.
MEMPHIS CAR AUDIO-mojo, LVS double stacked frame baskets for high excursion, high power handling.
MEYER- stadium stuff for special applications, really clean, used at disneyland (i guess mickey likes em)
MONACOR- uses our dual gap twin coil design.
MMAT-the origin of some dd designs, very high quality amps and speakers. juggernauts (juggs) a db world record holder 172db+
MTX-the jackhammer, a 300 pound ultrawoofer for a strong gorilla and bill gates. MTX-9500 thunder and rfl152, better than jl 13w7 and larger, well made and not insane price.
ORION-hcca, 4 inch coils, 168db+ certified big baller
PEAVEY-black widow lots of performance little price.
PIONEER-t5000spl, a car db world record 177db and ceramic coated coils for insane temperature durability.
RE MX- this really tall speaker has 4 inch coil + neo magnets with trampoline size excursion, or for when your toddlers need exercise! RE xxx- an reasonable economical db drag monster.
ROCKFORD FOSGATE- T19 (uses our patented design) and team rfl, a 12 inch diameter magnet, if you can get em, bad ass.
SHOCKER- good reputation with superhigh db guys.
SOUNDSTREAM- xxx, an improved powerful speaker.
SUNDOWN-superhigh db guys and HUGE XMAX and power, with some "magical" properties. worked for the factory that designs them
SUNFIRE-CARVER, from Bob Carver the awesome wizard of amps! better reputation for home theater, but good woofers.
TREO- enormous and 1 inch top plate, older world record at 177db.
THIGGPIN-a woofer thats actually a fan with vibrating blades.good for bill gates with ultradeep bass 0(zero)hz, D.C. to 50 hz.
TC SOUNDS-all models are very good, do well for both sq. and superhigh db., some scary models are out there ripping heads off
TURBOSOUND TSW 218- bass so loud and expensive it will make you start walking around in circles talking to yourself like a crazy homeless meth-head
VELODYNE- uses a accelerometer and computer to cancel out distortion to zero.
YAMAHA- A wide range of quality, thier good stuff is really high quality, used often in recording studios

Bass Boxes:

1.louder

2.more bass

3.bass that is deeper and lower in frequency

4.bass that shakes and vibrates your car harder(it "feels" better and more intense)

5.the box volume recommended by the manufacturer's is always at least 2 times to small. So you should AT LEAST double the manufacturers recommended box size. Make the box at least twice the size that they say. They recommend smaller boxes because it sells more speakers and because THEY already decided and THEY dont think you need bass below 40 hertz!(talk about mood killers) All those technical woofer parameters like Vas and Qts is a pathetic way to measure the force generation potential of a woofer, furthermore they totally ignore the acoustic AIR FORCE LOAD.
This is the only 1 real measurement of importance anyway! Using those technical numbers without more data like trying to determine how fast a car or boat is by asking only 1 question; "how much horsepower does the motor have?" Anyone with a little common sense can tell you that you cant determine the top speed of a car or boat from only knowing just the horsepower. You also need more relevant data, like the weight, the size of car or boat , the shape, the wheels, the gear ratios, the torque, is the road flat or a mountain, ect.

Do i need flat responce to 10 hz? flat to 20? flat to 30? This frequency and fitting it inside your car will determine your box size. We like deep. Why? sit in a flat 10 hz car and you will know why.

STOP PUTTING WOOFERS IN THE SMALL BOXES THE COMPANIES RECOMMEND-DOUBLE THE SIZE!!

the Qts , Qms, Qes and all that stuff was calculated back in the 1950's when woofer magnets were 5 to 10 oz with 5 to 10 watt baby 1/2 inch voice coils! Back in those days with those puny weak magnets and coils you have to put woofers in carefully designed boxes that were usually to small, to give the woofer some rebound for cleaner sound. Now in 2020 magnets are 5 to 80 pounds!!!! Voice Coils are 3 inches in diameter then with the huge magnets like that the woofer cone is gonna move no matter what the Qts values are!!!Some people spend months worrying about some stupid technical number that doesnt have much meaning when you got 150 db+ on the meter, a 50 pound magnet, and a 3000 watt rms amplifier pushing it. Those technical numbers are for sound quality and calculation. TS theory is for box size and a comparison against other speakers and to predict the type of sound output you will expect, from weak (weaker) speakers, and or boxes that are to small (99% of boxes are too small). Do i like weak (high Q ts) speakers? yes, sometimes, they can sound very very good.

6.A 10 inch woofer in a 2 cubic foot box will put out deeper bass than an 18 inch woofer in a 2 cubic foot box. This is because the 18 inch woofer is suffocating and choking in a box that is to small.

7. If you HAVE TO invert your woofers, if your box is way to tiny! This means put them in the box "upside down" so the front of the cone fires into the box and the rear magnet sticks out of the box. This will make the inside of the box a little bigger, and then your woofer will be a little more relaxed and this means deeper bass and sometimes 1 to 4 decibels louder. YOU MUST PUT CHAINS ON INVERTED WOOFERS!!! IN AN ACCIDENT THEY WILL BE AIMING FOR YOUR HEAD!!

8.If your not interested in a killing people decibel level, and are more interested in awesome sound quality you can put the woofers in different size boxes. So for example say you have 4 cubic feet in total and 2 woofers, instead of putting each in a 2 cubic foot box, make one side 1 cubic foot and the other in a 3 cubic foot box, this will make the 1st woofer will better play the high pitched bass from 60 to 200 hertz, the other will better play the superdeep 20 to 50 hertz bass. This will happen automatically without any additional equalizers, crossovers or filters from your amplifiers. Your total db level will go down, but your sound quality will go way up. Even better would be to port tune the 2nd larger box from 18 to 26 hertz for that vibration bass. In general you can make 1 side from 2 times bigger or 3 times bigger than the other. So for example say you have X cubic feet in total, then the small side is X divided by 4 = (X/4) cubic feet, then the rest of the box is for the other woofer.

making Bass Boxes:

DONT USE NAILGUNS or STAPLEGUNS!!! I know their great for houses and if your in a hurry, but no match for the vibration above 140dB, only screws. If your making a box fast or quickly , you may hold wood in place with staples tempoarily until you can screw them together.

How to name your box...

"7th ORDER" or "5th ORDER" or "11th order quad- triple dynamic iso-muffler" or "New World" ORDER. Honestly, i think alot of people dont know what the hell their talking about. Supposedly, order is the rate of amplitude frequency cutoff, like a crossover (at least to an engineer like me). It actually means something very complicated mathematically. but i think people see a photo on the internet and it says something "cool" like: "11 th order multi-stage band-pass". DAM , THAT SOUNDS SO COOL!!! Even I want to say it again: "11 th order multi-stage band-pass". OH SNAP , with that name even I want one! So that imaginary name gets spread all over the internet, and a year later , i hear, read or see youtube that everybody is saying "11th order" or "11th order triple band pass" box.

, What the hell is that??!!!???!?

i guess they think their "cool" or "smart" or a "net forum moderator" if they call a box that. Maybe their just copy catters or parrakeets? THESE "NAMES" HAVE NO REAL MEANING!!!! ITS A BOX! IT HAS HOLE(S) OR DOESNT. 9 holes is NOT an "9 th order box"! a little box inside a big box is not a "2nd SIZE order" or "double order" or a "McDouble" box or a "jack in the box"! A loudspeaker inside a shoebox inside a refrigerator is NOT a 2nd order box!!!A loudspeaker inside a ported shoebox inside a refrigerator is NOT a 4th order box!!Or a loudspeaker inside a ported shoebox inside a ported refrigerator is NOT a 5th order box!!Here are some REAL WORDS;
tube, reflex ( improperly called "4th order"), vented, port, ported, twin ported, triple ported(improperly called 8th order), expansion port, flared port, isobaric, dual isobaric, push-pull, sealed, time aligned, horn, pipe, resonator, silencer, muffler, variable port, internal port, passive reflex, passive radiator, complex, offset, isothermal, manifold, wall, double wall, partition, walled partition, feedback, feedback resonator. Are there "wall" or "complex" boxes at a db show? yes. they are called "wall" or "complex", but NOT: "9th order McDouble-Jack in the box".

"MR. joe little NOBODY" from tennesee.... and his buddies were very drunk one evening.....when one of them saw joes dog house just sitting there.....("petey" the dog was chasing some nieghborhood kids down the street).....so joes friend "big hoss" says "LETS MAKE A WOOFER BOX WITH YOUR DOGHOUSE!!!".....joe was 3 sixpacks past sideways so hes says "HELLS MF YA!!!!" and away they go..... 18 inch NEO with unlimited watts.....cut the hole in the doghouse and put the woofer in the hole...surprize surprize the big doghouse with the port hole front door made pretty decent bass.... so they connected it to a big surfboard amplifier and that big doghouse was a shaking!!! and loud!!!...So they got a great idea to sell them to all the nieghborhood chrystal meth heads!!!....and sold alot... then on EBAY... but they neede a name for thier "NEW" box...so they decided on the "DOGBOX"!!!... well after a year or so they showed up on youtube and internet forums and car shows....and then we had the copycats....yep......"DOGBOX" copycats!!!!!but now people just make them on thier own at home.... and at shows people ask what you got...they say " 2 x 18s in a "PARAMETRIC DOGBOX".... and idiot people are like...."SICK.....YOUR FN BADASS!!!!" ...."I WISH I HAD 2 x 18s IN A PARAMETRIC DOGHOUSE.....DAMMIT!!!"" .. well guess what??!!! there is no such thing as a "DOGBOX" design or enclosure!!!!.....it was just made up out of thin air...a fantasy.... the "DOGBOX" is just a "BASS REFLEX""" same old stuff....

BOX RISE?
Another "name" with a confusing, nonsense meaning. Im not confused, but most of the world is. WHAT IS RISING? Frequency?, ohms?, resonance? or the box is in an elevator? So part of the confusion is the "rise" the FREQUENCY or the OHMS?? Some will notice the ohm of a speaker goes up (rise) happens with a box vs naked, OR resonance vs sticker rating. Other people notice the resonance FREQUENCY goes up when in a box vs naked, OR when the neighbors cat is making snow angels!! hahaha.... Say a naked 18" resonates at 20 hz. it likes a really really big box. Well unless you got a real big box, say a bigger than 12 cubic foot box, the resonance frequency will go up, smaller box equals a much higher frequency. so this would be FREQUENCY rise (from a box thats to small). AND..... frequency rise causes impedance change.
All woofers have higher impedance at resonance than their label rating. Whats impedance? Impedance is the ohm of a woofer when playing sound. Ohm is when the speaker is sleeping and just laying around and not makeing sound. Ohm is the number on the sticker label. Impedance changes with every frequency, OHMS doesnt change, unless the speaker gets damaged physically. So a very large box , like the size of a bedroom will not make anything RISE, not frequency, not ohm load, not resonance.
Sometimes i hear it more correctly describing the ratio of: (impedance/ ohms). That is the called "impedance ratio". "impedance ratio" = (impedance / ohms). Say a speaker label is 2 ohms, measured scientifically at 38 hz is 6.4 impedance. so (6.4/2) = 3.2. Then 3.2 is the "impedance RATIO". At resonance the ratio is very high, like 5 to 20. for woofers higher than resonance the ratio goes lower. Usually the lower the ratio at RESONANCE , the more powerful the speaker is.

Ported or Sealed Box Resonance Frequency:

FREQUENCY RESONANCE = 51.71 x Square Root[(area port in square inches) / (Volume of box in cubic feet X port length in inches)]

OR

PORT LENGTH in inches = 2673.9 X (area port in square inches) / (Volume of box in cubic feet X Frequency X Frequency)]

OR

(AREA PORT in square inches) = (Volume of box in cubic feet X Frequency X Frequency)] X (port length in inches) / 2673.9

or in metric system units;

FREQUENCY RESONANCE = 54.59 x Square Root[(area port in square meters) / (Volume of box in cubic meters X port length in meters)]

You can also use mathematics to re-arrange this to solve for the box size or port length or area, if you already know the frequency of resonance that you want, or just email if your not to cool with math.

This is for the BOX only, when you put a WOOFER in the box it becomes a SYSTEM (box + woofer), and it may change the resonant frequency a little or alot depending on the strength and resonance of the woofer alone. Also remember at the resonance frequency, the woofer excursion per unit watt sound output is the lowest, so that the cone does not move very much but massive sound output is coming from the vent and it is also at the maximum electric ohm load.

Below the system resonance the woofer will act like it is in naked free air, and move violently and may be damaged.

Above about 3 times the resonance frequency the system will kind of behave like it is in a sealed box of the same size. In general, the larger the box and the larger the port the more sound output irrespective of the frequency.

SEALED BOX RESONANCE are roughly , 3.5 cubic feet for a single 10 inch woofer, 5 cubic feet for a single 12 inch woofer, and 8 cubic feet for a single 15, and 12 cubic feet for a single 18 for flat response to about 20 hz. . when woofer excursion is about 1 inch or 2 inches back and forth, with very high power of 1,000 to 10,000 watts each woofer. For 10 hz flat double these box sizes. This is for the box by itself. The math proving this is very ugly. Also this is NOT for db contests, this is for better sound quality. this is because a larger box like this will lower your 40 to 80 hz bass where the db contests are, but will increase your superdeep bass below 40 hz db level, so your superdeep is louder.

A quick and 99 percent of the time correct way to find out resonance frequency is to get a flat frequency sweep audio C.D.(like ours) and then attach a multimeter to read AMPERES to any loudspeaker, inside or outside of a bass box(whatever). It should go:

Shut off any equalizers, epicenters, bass boosters, or any gains in your radio deck and amplifier boost switches.

1.sound amplifier black (-OUT) to loudspeaker black(-in).

2.Then sound amplifier red (+OUT) to AMPERE A.C. multimeter red (+IN) to AMPERE A.C. multimeter black (-IN) to loudspeaker red (+IN).

Click here to see a setup diagram

3.Play the frequency sweep starting from a low pitch(say 15 or 20 hertz) to higher pitch(100 hertz) slowly at a starting volume that makes the AMPERE meter read, say around 1.00 AMPERES alternating current at the start.

4. do NOT adjust the volume once you start the sweep.

The AMPERES will begin to drop automatically and go lower, to 1.00, 0.99, 0.98, 0.97 ect. until 0.33, 0.32, 0.32 it hits a low say 0.32 amperes, then it will begin to slowly go up again, 0.32, 0.33, 0.34, 0.35....

The point when the AMPERE meter reads the lowest AMPERES is your loudspeakers and or system frequency of resonance.

Our frequency sweep audio C.D. works really good for this because our sweep speed is (1 hertz per second = 1 hz/second). So starting the sweep at 10 hz, then begin play, 23 seconds later the AMPERES is at it's lowest reading, so this means your resonance is at 10 hz + 23 seconds = 33 hertz. This represents a "true resonance". As an example a 15 inch subwoofer with a resonant frequency of 25 hertz in a 6 cubic foot ported box tuned to 18 hertz, may measure 34 hertz "true". Sitting on a car with a "true" resonance of less than 31 hertz is quite fierce above 125 db.

The resonant frequency is not always your frequency db maximum.

This is because loudspeaker + box + amplifier + car = system. A system has a frequency at which the decibel level db is maximum, this is called the (Fdb). Use a frequency sweep disk to find out your Fdb, at about 10db lower than your maximum db, so you dont blow stuff up first.

In theory it would be nice to have a Fdb = (F resonance = Fres), or even better to have Fdb = F resonance = amplifier resonance(max power)= car resonance = loudspeaker box resonance = loudspeaker resonance.

With lots of time, money and experimentation, my company has done this on several occasions, the interesting outcome is that the efficiency of the system becomes extremely high, in terms of db per watt, and can achieve 125db or higher db per watt. The total db level is of course also extremely high. Why is this important? remember the last +1.0 db will probably cost you 2 to 4 times your total amplifier cost, the last +0.1 db will cost you probably 50% the cost of your amps. System efficiency will save you lots of money!! and time!`

Amplifiers:

AMP-lifiers, not VOLT-afiers...

AMP-lifiers, not WATT-afiers...

AMP-lifiers, not POWER-fiers...

"AMP" is short for "AMPERES"!!!!!!

high quality AMPlifiers are able to dump lots of current flow(electrons)

(AMPERES)

We sell amplifiers, check it out here: http://www.makeitlouder.com/Amplifiers.html You may also be able to test an amplifier, take 2 multimeters, 1 will measure voltage across the (+)and(-), the other meter becomes part of the wire to the amplifier(this 1 will measure the current in amperes). Say your voltage is 30 volts and your current is 10 amperes, then you multiply them. So in this example 30 times 10 is equal to 300 watts R.M.S.. In general most amplifiers will push 3 to 5 times the voltage number compared to the amperage number. So in a more realistic example 20 volts will generate about 5 amperes or 100 watts R.M.S. most companies will call this a "400" watt amplifier. WHY???? This is because peak is 2 times the R.M.S., (200 watts) and 0.1 second power is 2 times this(400 watts). So 100 R.M.S. gets "OVERRATED" to 400 watts, it probably can push 400 watts for (0.1) second however it sounds horrible and is totally distorted and more importantly your amplifier will die(cook) in a few seconds.

Please give your amplifiers fat, fat, fat wires. the fattest you can afford. they dont have to be fancy or name brand just fat, like a garden hose!!! 1/0 or 00 gauge, or your amplifiers will be weak, or make weird sounds.

So whats up with all this fat wire for the amplifier? its about resistance, in "ohms". here is a table of "ohms", from low to higher;

0.000294, 3 feet of 000 gauge =3/0

0.000735, 3 feet of 4 gauge

0.002 superbattery

0.00515 is 21 feet of 4 gauge

0.0157 a normal strong car battery, 800 CCA

0.063 a large 3000 watt amplifier with 200 amperes

your wire and amplifier are competing for battery juice(amperes), the ratio of the ohm loads is the ampereage ratio also. so 21 feet of 4 gauge appears to be good, however the ratio of 0.00515/0.063= 0.08174, this times 800 amperes from the battery = 65.4 ampere loss! so the amplifier wants 200 amperes but in reality is only getting 200- 65.4 = 134.6 amperes, a 3.45 db LOSS!!!!MORE than half the power is LOST!!

Furthermore, VOLTAGE gains or losses are even more important. watts = (volts X volts / ohms). Now think about how 14.4 volts instead of 12.6 volts is a gain of 31% = 2.3 db. Look to keep it simple use 3 wires of 4 gauge OR 1 wire 0 gauge for 1 big 2000 watt amp. dB guys live and die, crash and burn for a 0.1 db or 0.3 db!(here it is).

RATING POWER! Most of the time amplifiers are "OVERRATED" by companies to sell more, they give you the "flame rating" this is the peak power at the moment it bursts into flames! Technically, to get the flame rating the factory intentionally kills an amplifier by testing it with a special machine and then connecting the + and - speaker outputs directly to each other without a speaker in between(a direct short circuit).This causes the amp to max death output for maybe 0.001 to 0.01 seconds, and presto... this is the flame rating.Some companies "UNDERRATE" to let you know it easily pushes clean power,and to keep a high quality reputation. Some well known UNDERraters are: JL Audio, Kenwood, MMats, Alpine, and of course Rockford Fosgate with there 1/2 suitcase size amplifiers rated at 100 watts R.M.S., actually more like 10 times that. UNDERRATING amplifiers , that's not a good idea or fair either, why? cuz you will cook your woofers! and half the time when you cook your woofers it shorts the woofer coils to ZERO OHM, so your amp dies also! WOW , ya thanks for UNDERRATING your AMP, now i got dead woofers AND a dead amplifier!! the typical classic correct SIMPLE way is (VOLTS x VOLTS(amp output))/OHM(dc nominal woofer) and play some normal bass music or tones; so TRUE POWER!!;

200 volts@4 ohm = big stadium amplifiers = 10000 RMS watts@4 ohms!

120 volts@6 ohm = USA house outlet = 2400 RMS watts@6 ohms!

100 volts@ 0.7 ohm = the monster surf board competition car amps

70 volts@1ohm= 4900 watts, rare high power,

60 volts@1 ohm = 3600 watts

50 volts into 1 ohm= 2500 watts, 2 ohm= 1250 watts, 4 ohms= 675 watts, this is a nice size for most car stereo audiophile or up to 150 db 8 ohms=337 watts,

40 volts = 1600 watts

30 volts@1 ohm= 900 watts,

20 volts@1 ohm= 400 watts

10 volts@1 ohm = 100 watts

notice how power usually goes up as ohms goes down.

Everybody gets there feelings butt hurt about woofers and amps and power ratings like you killed their dog. sO DONT BE THAT GUY!!!

their logic= my amp sticker label says 5000 watts, my speaker label says 5000 watts, it plays fine all day and never blows up, its loud: THEREFORE i must have a 5000 watt system, WRONG!, in reality probably about 600wrms amp and 600wrms woofer REAL!!!

however, in proper defence half companies tell the truth, even though to "db guy" their overating lieng. I defend some of these so called "over-ratings". take an amp it puts out 60 volts, with easy $30 voltmeter now put it into 1 ohm woofer. watt = volt x volt / ohm, so thats a rating of 3600 watts, a 3600 watt label goes on it.for simplicity and history i can accept that as a "FAIR" rating, its easy just use voltmeter. Besides most big amps are "CLASS D", so usually in the low bass distortion is hard to hear, so on a sine wave note it is the RMS, the amp manufacturer doubles this for the "peak" rating of 6000 watts. FACTORY says "6000 watts", db guy says "600 watts". The problem is however at resonance a woofer can be 10x ohms!!!so 60 volts prob. at resonance ohms(10)= REAL 600wrms. this is the "old school" volt meter only rating, NOT the REAL wrms. because A.C. electricity gets complicated phase lags and ohm load shift changes.

a "db guy" from experience will say; their lieing it puts out ONLY about 700 wrms REAL. the wrms REAL is volt rms x ampere rms. so here 700 wrms/11.66 amperes = 60 volts.

The company is not lieing, and neither is the "db guy". BOTH ARE CORRECT!!! Remember, big power amps are usually "class d" at 1 OHM, dB loudspeakers are usually 1 OHM ONLY from 55 to 90 hz. At the resonance at say 30 hz they are probably really 10 to 15 ohms!!!So that big 1 OHM amp is gonna be weak (low output speaker voltage)!! Then the "db guy" is crying to his grandma about a "weak" amp.Here that old school SURFBOARD amp is gonna rip heads off (with higher output speaker voltage).

on "youtube.com" they got "CLAMP test" with volts and amps meters together, which is real! and time consuming. There are also machine testers or " amp dynos" but they also usually "underrate" slightly (20 to 40% usually) which can be even MORE ANNOYING. AND they say nothing about power at 30hz, 20hz, 10hz, where most of the high power is needed!

CLAMPING is the only real test.

YOU CAN TRUST A CLAMP TEST IF YOU SAY THE EXACT VOLTS AND EXACT AMPERES!!!!!!!!!!!!!!!!!!!!!!!!

digital multimeters are very, very, very accurate (rarely more than 1% off perfect accuracy). if your multimeter surrounds the wire for ampere test, try to make sure wire is close to center, either way still extremely accurate. and suprisingly sometimes the results different. like-amp X + speaker X is a different power value than AMP X + speaker Y , wierd HUH?(oh so complicated...) some city electric companys power rate at 0.5 60 hz= 120th second. 1/10 second. its called "haversine" power. half a sine wave cycle at 60 hz. not enough time to heat up. 3 second burp is about a quarter that power rating. WRMS or similar EIA means all day and night 4ever, it can release the heat its getting, i.e. self cooling. i really did this as a university project; as an example boil water pot on 1 oven flame burner at max. the amount of heat the water is getting is ONLY about 550 wrms REAL! so we know to our human hand that $TUff is HOT!!!!!so an amp with 550wrms REAL is a big amp with alot of power. its woofer efficiency so low it doesnt seem that powerful. amps are efficient, woofers are not.

You should use a real woofer also, direct resistors are not including the complex inductance , capacitance, phase lag, impedance.

To test measure the wattage power of your amplifier;

If its already connected and plays music good just skip to number 3.

1.sound amplifier black (-OUT) to loudspeaker black(-in).

2.Then sound amplifier red (+OUT) to loudspeaker red (+IN).

3.then touch the A.C. voltage multimeter red (+IN) to either loudspeaker RED (+IN) or amplifier RED (+OUT) and then
multimeter black (-IN) to loudspeaker black (-IN) or amplifier black (-OUT).

4. do NOT accidentally touch or connect an ordinary electric wire from amplifier red +OUT to amplifier black-OUT unless there is a loudspeaker there, or you will KILL your amplifier!

wattage is equal to volts times volts divided by speaker ohms, (Volts x Volts)/OHMS.

Click here to see a voltmeter setup diagram

Also remember to use the fattest thickest wire with the shortest possible distance to the car battery, an amplifier factory rated at 2000 watts may only push 300 watts if you use junk wires that are to thin, then you will wrongly think "what a piece of junk AMP"(wrong!). What you have is a good amp with thin, skinny junk wire. Many amplifiers will not even turn on, if they dont have very fat thick wire(4 gauge or fatter) going into them, some will turn on but sound horrible. Serious car stereo people put in another car battery in their car near the amplifiers, for extra amperage. So the car will have 2 batteries. World class decibel car stereo people put in as many as 80 batteries, just for the amplifiers!

Different Amplifiers have different combinations of amperes and voltage for a specific power output. Say you have amplifier brand (X), it is 1600 watts RMS, you or somebody tests it at 80 volts at 20 amperes output. Now amplifier brand (Z) puts out 40 volts at 40 amperes for the same 1600 watts of power. Amplifier (z) is called a "high current" amplifier and is usually of higher quality, and 99 percent of the time cost lots of money. amplifier (z) is awesome for low bass frequencies and low ohm loudspeaker loads (like 1 ohm), and are usually monoblock subwoofer only amplifiers, but sometimes can be 2 channel. amplifier (z) will be very weak power in the mids and highs usually above 90 hertz, but terrifing high power output below 80 hertz! Oppositely amplifier (x) will play lots of power no matter what frequency your playing. and if it very strong like over 70 volts it probably will make your speaker hit harder because at resonance a speaker is about 4 to 8 times higher in ohms.(JL AUDIO have a variable OHM load 1.5 to 4).

so you wired your speakers to 1 ohm on a meter, when you play the resonant frequency you will probably be really at 10 ohms!!! and that 1 ohm monoblock is going to be weak, weak, weak! while the type x amp= type (ab) = OLD SCHOOL amp will be hitting hard and furious. these are also those old school amps rated at 200 or 400 watts, that look like long surfboards.

Want higher db?, more power is usually a brutal solution. Most world champions have QUAD(4) coil speakers, and run a huge amplifier to each coil, we and our world champion clients run 2 amplifiers per coil, so 1 speaker will have 4 to 8 amplifiers powering it! 2 amplifiers per coil is called "stacking" or "strapped" or "strapable", only a few amplifiers can do this without blowing up and dieing(do NOT try it, unless the manufacturer of the amplifier says you can!). Some are called CLASS X or UNREGULATED CLASS D or HC or UHC (ULTRA HIGH CURRENT) or 1/2 OHM STABLE. If you cant afford to kill an AMP, DON'T DO IT. Only do it IF THE FACTORY SAYS YOU CAN. Ah... I can already hear the wallets crying.

Power:

Power is NOT the same!!!!

Watts are not the same!!!!

A watt of energy flow does not manifest itself in the same way. More importantly, it may not represent itself in a way that is meaningful to you and or your needs.

A bullet flying through the air has lots of watts of power, so does a laser beam and so does a 100 car train but none of this will help you the car stereo lover. Why?...

1st. of all most of the power is not manifesting in an electronic way.

2nd. even when watts are mostly electronic, they are a combination of voltage, amperage and ohm load and a complicated phase angle and unwanted heat.

Electronic watts are the multiplication of voltage times amperage, so (volts= amperage times ohms). So as a simple example you have a 1000 watt amplifier. Some amplifiers represent this as 100 volts with 10 amperes of current, others as 50 volts and 20 amperes.

The best choice would be the lower voltage and higher ampere mixture of power.

This is because amperage is the purest physical manifestation of force transformation from the magnetic electronic force, i.e. the M.M.F. (magneto motive force). I.E. the transference of the electron momentum to the physical momentum of a loudspeaker cone.

The scientific complicated proving truth mumbo jumbo is: mass times velocity = momentum = kg *v = p, then: momentum divided by mechanical resistance(z) = displacement in meters; (p/z) = meters; meters = displacement current = amperes; (kg EXP1,meters EXP1, seconds EXP-1)/(kg EXP1, meters EXP0,seconds EXP1) =(kg EXP0, meters EXP1, seconds EXP0).

What this means in more simple english is that a 747 jet airplane flying at 600 miles per hour through the air then turn off the engines and it will still COAST 100 miles, a long way. A piece of dust lint in your bedroom has little momentum so it doesnt coast very far. a woofer with more AMPERES will generally push with harder momentum and therefore more pounds per square inch (P.S.I.) i.e. higher db; more DB, LOUDER!

Decibel or SQL Stereo Competitions:

Have fun!

Make friends!

World championship level cars are EXTREMELY MODIFIED!!!!!!! and most not even drivable!!! they gain 10 to 20db through car modifications over you even if your using the exact same stuff!!!!So dont get upset that your db number may seen low compared to their numbers. they also use microcars especially in europe!!!!

Trade, share or play music! (after your 3 second burp)

So many people forgot the "old school days" or are to young to know that all this car stereo stuff was fun.
By they way, us "old schoolers" weren't stupid, its just because back then we didn't have optical drives, flash drives, satellite systems, C.D. players or Ipods or Computers, iphones... (I'm sorry, now I know I just scaring you with that no iphone talk...). Oh ya, it did take 4 (18's) or 8 (15's) or 20 (12's) to hit 145 db or 150 db back in the old days. The most powerful amplifiers way back then were only 300 watts...speakers were 200 watts...Whatever...

anyways...

We do sound quality here at www.makeitlouder.com, in fact we love sound quality, just call or email us +1 619 534 9710

0.Determine your time, money or sponsorship budget(sponsorship usually requires many, many years as a car stereo "pro"). A 130 to 140db system can sound great and impress lots of people and is not to expensive, 140 to 150db is going to take money, 150 to 160 is going to take big money + time. 160+db is going to take LOTS AND LOTS of money and time and dont forget to toss in the price of your car because you will have to make your car a "DEDICATED" S.p.l. car ONLY, which means no daily driving and a towing trailer. 170+db = CALL US and bring large and heavy amounts of $100 dollar bills!
1.Determine your most likely class or competition level, and size and number of woofers.
2.Get a sound meter and or spectrum analyzer, otherwise your just guessing.
3.Find someone in your area that has lots of expireince (years)
4.You don't want to drive a dragster to disneyland, so dont expect a db car to "sound good".A car that does a super fierce loud db, usually sounds horrible with music.This is because most db systems are tuned to a "spikey" higher bass resonant frequency(40hz to 85hz) instead of a lower frequency flatter smoother response tuning(25hz to 40hz).
5.Realize that at about a "real 145db"(or about 152db in car competitions) the vehicle and windows are going to flex and vibrate tremendously, this is going to increase the difficulty in getting higher db levels. At this point you may decide to stay where your at or commit to bulletproof glass and fiberglass interior with no seats and a car that will NOT drive you or the kids to soccer practice anymore. It is possible to make a 145 to 152db system that sounds great, has basically flat frequency response to 20hz, does pretty good db numbers, and is invisible to criminals looking in your car.
6.This is just elementary advise, We can answer extremely technical questions, just email.
7.sound meter test, re-tune, rebuild... sound meter test, re-tune, rebuild...
8.No one has a right to judge your level of commitment or dedication to db competitions,we are all different so when you not having fun you should retire or take a couple years break and come back again, or just go to shows and watch, or just find another hobby or "sport".
9.Even if its not your own car +145 db still "feels" great.
10.Bigger boxes = bigger db number
11.Many of the rules of db shows are arbitrary and make no sence, so chose your class and system well before your car gets put in bad or difficult choice because of some stupid rule.
12.Related to 11, make sure you have 1" extra, or make your boxes 1" smaller when you design and install them, otherwise:
1. It might not fit in your car.
2. at a competition somebody just might pull out a ruler and rule book and ruin your day. If your doing a big number believe me the rulers and rule books will come out.
13. We propose just a few simple rules in the unlimited class:
Rule 0. VOTING, yes VOTING just like for president, if over half of the voters think a new rule or even an old rule is "stupid and retarded" it can be voted out of the rule book. Only rule 1 and 2 will always remain and can not be voted out.
Rule 1.ANY competitor can rule book inspect or use any brand sound meter to test of any other competitors system at the time when the official judging or burping is occuring or about to occur.
Rule 2.At a competition you can not replace anything, dead decks, dead amps or dead loudspeakers(the equipment must be able to take the decibel abuse at least twice)
Rule 3.It must hit the same decibel number at least 2 times, lowest dB number "counts"
Rule 4.The equipment must be able to be purchased by anyone in a store(no prototype stuff)
Rule 5.ALL equipment in the system must be ELECTROMAGNETIC (no bs tricks or explosives ect.)
Rule 6.System must run on batteries
Rule 7.All speakers must be behind the 2 front seats, or where the front seats would be.
14. When in doubt, sprinkle everything with magic powder. This usually helps. If it doesnt, call or email us. we got really good magic powder!

Why is it so hard to MAKE IT LOUDER?

Everyone and everything wants neighbors with more similarities to themselves.

This is a force of the universe and is quite powerful. As a real life example find a car stereo of 145 db or more and try to "hug" or hold the car with your arms into NOT vibrating, it is basically impossible. At some shows you will see 10 guys trying to squeeze the car into not vibrating to get a louder db. Sometimes they are even on the roof "car surfing" if you ever get to, try it, most people think it feels quite fun to get "floated" or "levitated" up to 1 inch. Vibration is a result of the universe forcing the "smoothing out" of power flow inequalities.
13. total physical(air) and electrical system: A. inductance = (resistance changes with frequency changes) B. reactance = (energy storage changes with frequency changes).
14.Hydraulic force is when a fluid is squeezed, like air at high decibel level. Hydraulic forces are easily predictable if there is no "leakage"(air escape), like putting air in a car tire (zero % leakage). A speaker in the middle of a football field is 100 % "leakage". With every sound source sound there is always some amount of "leakage". Every car or sound source or building has a different amount of leakage. "Leakage" even on the same system is different at every single db level: so the leakage at 134 db is more that the leakage at even 133.9 db, each db is at a different "leakage" level.
15. When in doubt, sprinkle everything with magic powder. This usually helps. If it doesnt, call or email us. we got really good magic powder!

Ohms:

Another analogy for the voltage and ampereage coming out of an amplifier goes like this;

Would you rather get hit by a cotton ball going 50 miles per hour or a car going 25 miles per hour? Hopefully, you dont want to get hit by anything... but I'm sure you would rather get hit by a cottom ball going 50 miles per hour...its obvious isn't it? There are many scientific definitions of why this is a better, safer choice, but more generally we are describing MOMENTUM.

Momentum is weight x speed. Actually, (Mass) x (velocity)

You must remember our goal is to transfer the maximum amount of MOMENTUM not POWER!!!!!!! Think of your amplifier as providing 2 things to your loudspeaker: voltage and ampereage. Now think of:

VOLTAGE = speed
AMPEREAGE = weight(the MASS of large number of electrons).

Ohms determines the ratio of voltage to ampereage.
In fact:

(OHMS = VOLTAGE/AMPEREAGE)


Another example for you:

Everyone knows that a military laser beam or dentist X-rays have a tremendous amount of POWER, they can "burn" right thru concrete walls, bone, and even thick steel plates! But remember they can't even knock a cotton ball off a table.(WEAK!!!!!)

Why?

click to enlarge photo of loudspeaker ohms

Loudspeaker Efficiency:

Efficiency is classically defined as (power out / power in),

Efficiency = (sound power out / electric power in) = ((db(pressure) X db X area) / (volts X amperes))

and in the case of loudspeakers it is defined as the sound power output divided by the electrical power input. Loudspeakers are actually very inefficient transducers. Only about 1% of the electrical energy put into a typical home loudspeaker is converted to the acoustic energy we know as sound - the remainder being converted to mostly to heat and other type losses. The are several reasons for low efficiency.

1. The size RATIO of the diameter of loudspeaker cone divided by the wavelength of sound is LOW. Even 18 inch cones are small compared to the wavelength of bass sound(30 hertz = 37 feet long). There is a difficulty in achieving proper impedance matching between the acoustic impedance of the drive unit(loudspeaker, low impedance) and that of the air(high impedance). This is especially difficult at lower frequencies. The better the acoustic load matching, the higher the efficiency. A simple analogy would be to pull a skateboard with an 18 wheel semi truck. you can pull a skateboard with an 18 wheeler but it is not very efficient (i.e poor gas mileage). Large horn loudspeakers that are used in movie theater cinemas, stadiums, or nightclubs are very efficient by today's hi-fi speaker standards.
2. The magnetic force is not efficient.
3. The electric coil force is not efficient.
4. The moving mass is very high compared to the amount of ejected air.
5. The acoustic force load factor is low.
6. The ratio of cone acceleration versus velocity is high
7. Inductance

Measuring the sound power output is not easy, but the sound pressure is relatively simple to measure. The sound pressure level (SPL) that a loudspeaker produces is measured in decibels (dBSPL). Ratings based on the sound pressure level are known as sensitivity ratings. The sensitivity is often defined as (db/Watt/meter) or (db/w/m) = decibels output for an input of one nominal watt measured at one meter from the loudspeaker and on-axis or directly in front of it, given that the loudspeaker is radiating into an infinitely large space and mounted on an infinite baffle. Sensitivity then does not correlate precisely with efficiency as it also depends on the directivity of the source and the acoustic environment in front of the speaker. As an example, a simple cheerleader's horn makes more sound output in the direction it is pointed than the cheerleader could by her own mouth without the horn, but the horn did not technically improve or increase the cheerleader's real efficiency. However, her total sound power output is increased.

* most car loudspeakers have a sensitivity of 83 to 92 (dB/W/m) - a low efficiency

* Normal house loudspeakers have a sensitivity of 85 to 95 (dB/W/m) - an efficiency of about 0.5 - 4%.

* Nightclub speakers have a sensitivity of 95 to 102 dB/W/m - an efficiency of about 4 - 10%.

* Rock concert, RAVE, stadium speakers have a sensitivity of 103 to 110 dB/W/m - an efficiency of about 10 - 20%. In a stacked large wall array of 4 or more it can sometimes double this to 40% (a wall, 6 feet by 6 feet or larger).

Our current state-of-the-art loudspeakers can approach limited efficiencies of 70% or higher under very special circumstances, and up to 99% efficiency at resonance. This is partly due to a very high magnetic field and partly to a high amplitude displacement (speaker cone movement in and out). The ratio of the sound output to the mass of the cone/coil combination grows significantly at high sound pressure levels i.e. above 140 decibels. In closed or small environments (bedrooms and especially cars) it is far more important to have a speaker with a high Xmax (cone eXcursion maximum) as opposed to high (dB/(Watt/meter)) rating. A higher Xmax indicates a taller wound voice coil and that the driver can move a larger volume of air as power increases. A few top of the line woofers have a very low "sensitivity" rating i.e. 80 to 86 dB/(W/m) (a nominal efficiency of 0.1%) due mainly to the very tall voicecoil winding. However at full power in an enclosed automobile may achieve 165+ decibels at 20% to 40% apparent efficiency. In general a low frequency speaker designed for high SPL's will have a larger and or heavier magnet, and a higher Xmax, and extremely high power handling in the 3 to 10,000 WATT range. Furthermore, in general the efficiency of a speaker increases the higher the sound db level and electric input level, as an example the same speaker may be 1% efficient at 0.01 WATT electric input, but rises to 25% efficiency at 3000 WATTS input with a very high excursion, provided it can withstand 3000 WATTS input and excursion without blowing up.

It should be noted that a higher power handling driver will not necessarily be louder than a lower power one. In the examples which follow, it is implicit that the drivers being compared have the same impedance. For the first example, a speaker that is 3 dB more sensitive than another will produce double the sound power (or play 3 dB louder) for the same power as the other. Thus a 100W speaker (call it A) rated at 100 dB/Watt/meter) sensitivity will be twice as loud as a 200W speaker (call it B) rated at 97 dB/(W.m) when both are driven with the same 100W of input power. For this particular example, when driven at 100W, speaker A will produce the same SPL or loudness that speaker B would produce with 200W input. Thus a 3 dB increase in sensitivity of the speaker means that it will need half the power to achieve a given SPL, and this translates into a smaller power amplifier and some cost and weight savings. This is very important in stadium concert touring applications.

For car stereo systems the apparent efficiency rises very high. usually a 10 to 15db gain over the 1 meter sensitivity rating on the product box label. This is because in a car the sound has nowhere to go and the internal volume of a car is much smaller than your bedroom or a stadium. A normal 12 inch car woofer in a car is about 100db/watt. 2.83volts into 8 ohms = 2 volts into 4 ohms = 1.41 volts into 2 ohms, or 1 volt into 1 ohm. an 18 inch woofer about 110 db /watt. to really compete in car stereo you need at least 110 to 114 db /watt. a minivan with 16 twelves, 16 x 12 inch will be about 120 to 124db/watt. systems that are higher than 124db/ watt are hard to build and are extremely loud and compete seriously on the world championship tour.some of our violent rides have been from 124 db/watt or higher. these are mic readings at the front right windshield window.Remember when measuring db and power input, that total power input is used so say you got a 15 inch quad coil 4 coil woofer each coil is 2 ohms. 1.41 volts per coil is 1 watt per coil, so the total woofer is getting 4 watts!!!!so you have to subtract the 6.02db gain 4 watts is over 1 watt. for the correct db per 1 watt readings. this is even more complicated when you got 10 woofers, each woofer need to get only 0.10 of a watt so that all 10 combined equals 1 watt.In other words TOTAL power input per watt per db level. This is a very important number because on bigger systems somewhere about 1/3 to 1/2 amplifier power, you will probably get NON LINEARITY, in other words not very much louder. what this means in money is 2 or 4 times all your amplifier money $$$ to get the last 1.0 db gain!!!!! i will repeat it again for you:

2 or 4 times all your amplifier money $$$ to get the last 1.0 db gain!!!!!

So you spent 10 X $200 per amp is $2000. now you will need another $4000 to $8000 to get just 1.0 db louder!!!!! in other words get your design right from the beginning because it is MUCH MUCH cheaper!!!GET THE DESIGN RIGHT IN THE BEGINNING!!!

Cone Speed:

Cone speed = db, once again very clearly... c o n e s p e e d = db, technically it is the cone face db(the most important db measurement).

To measure cone speed(cone face db) you must put the woofer in a SUPERLARGE box, then put a 1 to 3 foot long tube around and up against the front side of the woofer, so the sound fires into the tube of the same size as the woofer, then put the microphone into the long tube, this is approximately the TRUE cone face db level.This is the proper way to measure the energy level coming out from a woofer, because it is the only time that db, acoustic watts and cone speed are all correctly mathematically related. Just putting a microphone up against the woofer cone without the tube in front is NOT accurate, because the sound instantly flys around to the back of speaker box and everywhere else.

Cone area is also second place to cone speed, unless you got 12 (fifteen's = 15 inch) woofers in your car! In other words it is better to have a smaller woofer moving like crazy, than to have a larger speaker playing like it is bored. The limit is near the speaker death. most world champions are CONSTANTLY killing woofers every few seconds, for the sake of your wallet and common sense we don't recommend it for the every day person or system.

We would like the car stereo competition db rules to change so that any system must repeat the same db level TWICE (without replacing dead loudspeakers or amplifiers), then db competition would be more about good design than largest wallet... nothing wrong with big wallets though. There is usually some form of relationship with money and different forms of power from high car db type power to a 10,000 horsepower megayacht.

db:

By the way, every db level should also have the conditions of the measurement stated. Simply put all db car stereo people ASSUME the meter is on the right side front windshield and or front center windshield, for those outrageously high 160 to 180 db readings! Great, so as an example; one 12" woofer high performance with two 6000 WATT amplifiers, i.e. 12000 ELECTRIC WATTS, the cone surface db = 158 db, the inside the small box level = 172 db, the in a MICROeuropean car front right windshield = 163 db, in a US small car = 155 db, box outdoors sound meter 39 inches away = 124 db, Or 12000 watts times 3 percent efficiency = 360 ACOUSTIC WATTS. what is our point? well this woofer brand X has ACCURATE, CORRECT db readings from 124 db to 172 db DEPENDING ON CONDITIONS!!! If someone says this speaker puts out 360 ACOUSTIC WATTS, or 124 db at one meter distance most car db people say "what a piece of junk" because they don't understand the meaning of acoustic watts, but if they say one 12" in a car 163 db at 12000 WATTS they go WOW that is great loudspeaker!, same woofer same meter!!!!Most true engineer's usually measure cone face db and or 1 meter away outdoor db level,NOT some Ultra Freaky Deaky(U.F.D.) world championship type micro car with 3 tons of concrete walls and 4 inches of bullet proof glass inside the car right front windshield db reading!!

And more than 1 speaker, like 2, 4, 8, 20 speakers and the db levels get to those freaky 170+db front dash windshield levels, so that now the 1 speaker at 124db at one meter distance is now 170+db, but yet the woofer has the about the same CONE SPEED, in other words the CONE SPEED db level is THE SAME!!! , nothing magical has happened to the woofer, just more cone AREA(more woofers)+(more db).

db compression V.S. db acoustic watts:

When you pump air into a bicycle tire or your car tire, this is air that has been COMPRESSED. So it has a db compression force, usually for your car tire it is PSI(pounds per square inch). 1 PSI = 170.75 db so usually we say P.S.I. but not db. Now take the air hose and blow a puff of air in your face. which do you think is higher db? the inside tire pressure or the puff of air in your face? OR are they at the same pressure(db)? Remember they both have the same input force and watts from the same air hose.

The answer is the inside the tire pressure is higher, it will also read higher on a db meter. Since both pressures are from the same air hose why should one be a higher pressure than the other?

WHY?

The easiest way to explain it is to have a story analogy. Say your playing football and some guy tackles you down on the grass field, later on he tackles you sideways into a brick wall on the sidelines (not fun). the same input FORCE and same input WATT POWER.

what hit harder(more db)?

the brick wall tackle is much, much more violent (higher db) . the brick wall is a more violent interaction because there is no place for you go, you are sandwiched in between the tackler and the brick wall and you have to take all the force and watt power! Well that is just like the air inside a car tire is more higher db than the puff of air db level. The air atoms inside a car tire have no place to go, so they just keep hitting each other harder(more db) the more WATT POWER you add. The puff of air db level is lower because the air atoms get to run away from the air hose, the more WATT POWER you add the faster they run away from the air hose but you will not get any more louder db pressure, in fact your db meter may even read lower db! The air atoms are just running away from the air hose so fast they dont have time to hit the sound meter mic. and make it read a higher db.

All sound sources in the world make 5 things: air speed flow, air force, air pressure(db), watts, energy. All sound sources!, bombs, loudspeakers, car tires, mosquito's. As a car db competitor the goal is more air pressure, db (db pressure). Say 2 sound sources have the exact same input output WATT POWER and ENERGY, they can still have different air speed flow, air force, and air pressure db.

Depending on your car system with the same sound WATTS you can have very high db(pressure) and low air speed or very low db(pressure) and very high air speed or any combination in between. it can get very complicated. Typically you can tell something freaky is going on when you double or triple your electric amplifiers watts in and your db (pressure sound meter) is the same or +- 1.0 db different. The big test is close all your car doors and windows tight, read your db sound meter, then slowly start rolling down 1 window, if you db goes down you have a db compression system, if your db goes up when you roll down a window you have a db sound watts system. If your sound pressure db goes DOWN with MORE electric amplifier watt power input you have a compression system with relatively weak coil woofers or woofers with short coils that do not have much excursion in and out. OR chances are your car is starting to vibrate to death at 147 to 154 db. This means you need to add steel bracing for your car frame or bulletproof windows.Some cars can hit 160+ without heavy modifications but its very difficult.

All High Pressure Sounds "feel" Different:

(half the frequency = a -6 db change or likewise: double the frequency = a +6 db change).

So for example; 140db at 40 hz feels as "intense" as 134db at 20 hz or 146db at 80 hz, however most people will say that 146db at 80 hz feels much more uncomfortable or annoying than 134db at 20 hz, even though 134db at 20hz vibrates and pounds your body and car much harder.
Some stadium loudspeakers have the ability to generate high decibel mid and high frequency sounds. 150 db at 500 to 1000 hz feels like someone is punching your nose, and 1500 to 2500 hz causes every tooth and every single strand of hair on your head to tingle(like a pile of ants on you).

Some car stereos have many woofers in sealed enclosures while others have the woofers in vented enclosures, from personal expirience I can say that a car interior at 150db from air tight sealed woofer enclosures "feels" much more violent than the same db level from a vented woofer box. This effect is extremely noticeable if the windows are rolled down a little bit, or a door is open. A majority of this effect is that in a sealed box system the acoustic power from the woofer cones in attempting to leave the cone and radiate outward, anything in its way including a human body will unsuccessfully attempt to resist this acoustic power flow. Also the woofers are literally ejecting a certain volume of air(X-max excursion amplitude times total cone area), if the windows are up this air ejection resists as pressure(sound pressure level= total cone FORCE), if the windows are down or the doors are open the air ejection resists as acoustic power flow(acoustic wattage= total cone area times the cone VELOCITY).
More simply, if the windows are up you will have a relatively high air pressure and low power flow. If your doors are completely open you will have relatively low pressure and high power flow. if your doors are closed but your windows are rolled down slightly you will have a "balanced" mix of air pressure versus air power flow, use a sound meter a you can see this effect very clearly.
Another reason air tight sealed systems feel like they "hit harder" is that the woofer cones are actually "rebounding" or "bouncing" off the extremely high internal box air pressure. Just like using a bicycle hand pump on a tire, at a certain pressure the handle will pop up all by itself.
Above 155 db of course the vehicles are usually completely sealed(air tight) relative to the outside air, but the woofers are usually mounted in a ported box.

If you get the opportunity to go to a large "rave" party or front row at a large rock concert they sometimes will have a large 10 X 30 foot wall of very large refrigerator size bass bin speaker cabinets. Usually they play around 145 to 157db at 25 hz to 100 hz, but since it is 99 percent acoustic radiating outward power flow, it pounds and slightly moves your entire body. Sometimes they will not have a fence or security guard so you can actually lean up against the bass speaker wall, and the sound pressure db goes WAY up, especially if your body is "trying to block" the woofer sound wave. It is quite violent (like a football tackle) even with earplugs. This is just like a car system with its doors open.

One of the most powerful stadium rock concert systems I have ever worked on generated 118 to 120 db at an outdoor distance of 50 yards from the loudspeakers! ("THE WHO" rock musical group). At the last top row of the stadium 10 stories above and about 150 yards away the db level was about 110, and there was a 1 to 2 second lag time between the music sound beats and the immense vibration traveling thoughout the entire concrete stadium floor beneath my feet. Even though, by car stereo standards the decibel level was relatively low you could still sense the awesome thundering power coming from the stage framed by a 10 story tall 60 yard wide loudspeaker array. Even with such large distances and so much sound power coming from the loudspeakers, you could not really tell which direction the low frequency sound was coming from. The low frequency energy just completely engulfed and surrounded you, from every possible direction. Really words can not successfully describe it.

At another concert I was working at front row at a large rock concert I was in front of the 4 front floor main line loudspeakers, each a large 3 X 10 feet very large refrigerator size bass bin speaker cabinets, oh ya FULL FREQUENCY RANGE(loud!). It was about 150 to 155 db! Later a "smart bomb"(concussion granade) was dropped at my feet, which blew me in the air 2 feet and backwards about 8 feet, db level est. 182 db. It turned the music at 155db into total silence!!! Later another "smart bomb" was dropped and it was about 155 db at 32 meters distance! WOW! The light flash was also temporarily blinding. Even with earplugs a truly terrifieing expirience! I never wish to expirience again. It was a good idea I already had earplugs in.

The nowadays concerts are usually not very loud(95 to 115db). "Line arrays" have made concerts much quieter than the old school days. Famous people concerts in 2017 are usually using line arrays .Line arrays are those loudspeaker units hanging 50 feet in the sky pointing 100 yards down the floor, without 10 pages of writing they suck. Why? In the old days concerts had really different db levels. Some seats in the front row were way to loud and so seats in the back were way to low. So to fix this problem was a design that me and other sound techs came up with was a solution to the unequal volume levels at concerts, from 157db frontrow to 95 in the back of the stadium. We wanted to equal out the sound db level . We came up with the solution... the stadium "line array". The true concept of the line array is great, real life , not so much. Well the correct original plan has not been done well in real life. Theory says height is double the tallest standing people say 15 feet, then tilt the array 45 to 60 degrees down so the lowest speaker in the array is aiming straight down towards the ground and towards front row. Difficult Reality says thats hard to do because line arrays are very heavy and require special safety clamping and large hoisting equipment and chains, so all this equals "to much work" for the sound guys. tilting the array to the correct 45 degree vertical tilt is also chainwise just too hard, (or are they just lazy?). It also requires a guy called a "rigger" or "sky rigger" usually union, usually expensive, so they dont call him to show up before the concert to properly tilt the arrays. So they dont tilt the arrays. They just hang them 60 feet high and pointed straight up and down 200 yards PAST the last row(the array has no tilt it is just straight up and down). So what happens in real life, is that the Last row gets a boring "but clean" 100 db, "meh"- "bla bla" sound. Middle rows get no highs + crappy mids, and front row gets NO MIDS AND HIGHS + annoying 110 db of muffly bass!!!!NO ONE GETS GOOD SOUND!!!! In real life i complain to the sound man- at stadiums or a wedding, i complain! AND YOU SHOULD COMPLAIN!!! Say "HEY MR SOUNDMAN! IM NOT GETTING ANY MIDS OR HIGHS!" (If they are a big company, they will hurry and get a bunch of guys to run out with some large refrigerator size full ranges to make you happy, if they dont you get to suffer.). ARRAYS HAVE TO TILT!!! Another reason stadium "line arrays" are dogcrap is that a big company created a "db prediction computer software"... interesting, but Not very accurate software (wrong 20 to 30 db!!!). So instead of a bunch real human soundmen with db meters walking around a stadium you have a 1 guy looking at computer software guessing at what the db levels are from seat to seat in the stadium. AND THAT COMPUTER DOESNT EVEN HAVE A MIC OR METER!! IT IS ALL JUST MADE UP DATA....WRONG!!!!KNOCK KNOCK soundmen, you still need to use real sound meters in your hands.If you "claim" to be a real soundman and dont have a real sound meter... i call "LAME"!!!call us or at least buy one from online. There are some home stereo audiophile products named or designed as "line array"(many speakers together to make a tall, usually narrow tower speaker, these are good.) In 2017 RAVES or ELECTRIC MUSIC FESTIVALS they will usually have both; flying line arrays(dog crap quiet), + very large floor mains (cool) and or the "bass wall from hell"( 157db+, bring the earplugs and diapers), YAY!.

Get a Bass Computer Generator:

human hearing is working to 20hz then -6db additional at 10 hz. actually all live recordings at all the studios in the world cut off at 40 hz (-12db /octave). per international agreement and RIAA. since in the old days nothing could really play that low anyway. so -12db at 20 hz is dog crap!!and -24db at 10hz is very "unnatural".there is NOTHING NORMAL OR NATURAL in big label music recordings, they kill the bass as they are recording "live".playing a drum set the bass drum the fundamental may be 45 hz but it drops at 6 db octave naturally -6db at 22hz, -12db at 11hz. is "flat". so down 6db at 22hz is minimum for "accurate" live drum reproduction.and this is only the fundamental. the 1st subharmonic is at 22hz flat anyway.

because everything can play down to 30 hz pretty easily. trying to get the bass below 25 hz is not easy. first you need a deck like a pioneer that has no subsonic 20hz cutoff filters. alpine have 20 hz filters so you wont get superdeep out of them.Sony decks like many others are flat freq when using the line outs, using the sub outs they cutoff bass, weird huh.so use the real line outs. then you need an epicenter with our modified computer chip or bass processor with a bass chip or our modified soundstream BX12 or NEW: BX10 that we sell so you can get the ultra bass frequencies. we also sell chips for epicenters! Next you need an amplifier that has a 5 hz or at least a 10 hz subsonic filter adjuster,this is after your epicenter or bass processor. belva, audiopipe, orion amps have a variable cutoff down or switch to zero hz. Jl has a variable to zero hz filter cutoff.most class AB amps has a switchable on/off subsonic filter so you will get flat response. powerful amps that unfortunately cutoff bass we dont recommend; Highfonics, SSI, Soundstream, Alpine. Make sure your RADIO DECK has a flat response without a bass cutoff subsonic filter. Not all radio decks do. Pioneer stereos direct outs for sure do not have filters, so say hello 5HZ!!!!, and that is a good thing. if you want more you can get an pre amp equalizer that has a 20 hz or at least a 30 hz adjuster,this is after your deck but before the epicenter or bass processor that does not have a sub freq cutoff. then you need superspeakers with a very high xmax, like 18mm OR MORE and a superbig box tuned to 25hz or lower. next you need an pre amp equalizer that has a 20 hz or at least a 30 hz adjuster,this is after your deck but before the epicenter or bass processor. then you need an epicenter or bass processor. with a bass chip or a modified soundstream BX12 or BX10 like we sell so you can get the ultra bass frequencies. you need superspeakers and a superamp, and probably a superbig box tuned to 18hz.You can also have a double tuned box so its high tuned to 60s HZ for db then cover most of the ports for the 18 hz tuning. If you have large wing nuts and foam for the port covers you can change tuning in about 40 seconds!With this you can have the best of both worlds - high dB and the 20 hz hurricane hair trick!!

BASS VIBRATORS:

Security:

DR PHIL and Team DOG DOODY:

They love to point fingers at everyone and tell them what's wrong with there life and car stereo.

More annoying, they do this even though you never asked for their help or advise.

"Team dog doody" luvs pooper scoopers. either they wear em or give you some to wear. and they usually just want your money. A joining initiation fee, or some other fees or service payments, or they want to sell you only specific brand of equipment with no discounts, they dont really know who you are or care.

When you walk up to them at car shows Team dog doody will dive in front of you and slam the car door in your face so you CANT see there cheating system or other "magical stuff". They might even say "HEY!NOBODY GETS AN INSIDE LOOK AT OUR POOPER-SCOOPERS". They usually hate NEWBEE'S and beginner's and questions. They usually hit big db numbers and do very well, BECAUSE they dont let you join UNLESS you hit a specific VERY HIGH db number for your class. Even after a show, they hate playing music on a car stereo system, so stick to playing the "1 note wonder burps". They will not talk and do not like to talk to you if they dont know you, BUT if your somebody they know or somebody that THEY respect or you hit 0.1 db higher than them, THEN OUT COME THE POOPER-SCOOPERS! THEY LOVE TO USE THE POOPER SCOOPERS!!!

Oh ya, both Dr. Phil + Team dog doody never help in any REAL way,
NO;
money help
labor help,
borrow my sound meter help(break out the pooper-scoopers)
discount price help
lets "hang out" help
lets try my amp or speakers instead help
lets build a new bass box together help
NOTHING!
and they talk on and on and on about Qts, and more watts and more watts and more watts- they like watts

So the next time some beeah comes up to you like Dr. Phil telling you; "you gotta do this and you gotta do that " tell Dr. Phil to go pooper scooping".

Seriously, all of us have enough problems without some clown telling us we should follow his sinking ship to drown. Find out for yourself, or ask someone you should really respect, like a priest or a car stereo world champion or international car stereo corporation, even then believe the sound meter, it rarely lies or tells you a Dr. Suess, Cinderella story.

Worse yet some are some internet clown forums, where so and so is a "senior member", "forum moderator", "Senior Judge" or has a tatoo of it on his a**. The funniest part is that he says your not: "rated", "certified", "a member of Team Kneepads" and talks S*** about your system.

Sometimes they will make fun of you or call you a NEWBEE or NUBE because you committed the crime of "trying to learn"... thats a FELONY!!!! GUILTY!! GUILTY!!! THEY SCREAM....

or someone makes a internet forum comment, or youtube video either good or bad and people just start ripping with the usual nonsense, like;
user1: hey guys i was wondering about brand X?
user2: haha, i use their woofers as a kitty litter box
user3: uh-em im a dealer in that brand and that speaker takes 43000 watts all day long with no problems
user4: i had a pair, but my car caught on fire cuz i was smoking weed, so those speakers got burned up cause their crappy
user5: ya, my neighbor told me he took those woofers fishing one time- and you know what? he didnt catch no fish!!what a piece of junk woofer
user6: i was playing online videos, when my mom yelled- "your cookies are ready!", i ran out and accidentally stepped on the woofer- it still played but sound like junk...
user7: my co-worker owned them and blew em up with a 12 watt amp
user8: hey guys, im getting four 18's installed in my car next week, do you guys think my license plate is going to rattle, cuz i hate rattlling? the rare correct response: ya duocheee!!! your cars gonna rattle, i suppose you got arthritis and so it hurts your bones??!!!
user9: im friends with the boss of that company, and he says their going to make lawnmowers next year, so i wouldnt buy em cuz the warranty wont be good next year
user10: i heard if you wire them in parallel they blow up.
user11: theres a youtube video that shows those getting killed with a 4 watt amp, pretty sad...

You tell that Dr. Phil to go dog doody patrol also.

better yet skip the BS forums and just go back to a college or pick up a book you don't really understand and keep reading it until you do. Or go to a real car show near your house and just talk to real people. So your on a limited budget, all of us are, wipe the tears and do the best you can!

See the picture of the car at the top of this page, they just don't come raining down from the sky for free.

There are good teams out there, I call them "Team Cool". They know who you are, your system, your last system, the future system your planning. They always get you discounts or sometimes free stuff if your a heavy hitter, they will sometimes all go to your house to help you with a new system, at least one of them has a sound meter, they do REAL STUFF with you in REAL LIFE or phone, not the internet chit chat that does not get anything done. Team Cool usually lets you in there car or see the system and talks with you. Team Cool loves beginners, and helping begginers, so Team Cool usually has a wide range of db members all parked together, from the 119 db beginner poor guy to the 170+db world champ. Team Cool also loves music, and usually there are many ipods and many styles of music from rock to classical to rap to rave. Team doggy doodoo think music is a 100% waste of time and valuable battery power and so they only BURP and BURP.

Good stuff comes from hard work.

Don't talk about it "be about it".

Do it.

The real players, movers and shakers, world champions don't have time to talk about this and that and all the stuff they plan to do NEXT year. NO TIME on the internet or anywhere else for that matter. Nothing personal, it is just real success involves hard work, and hard TIME, NOT hard talk, and NOT internet drive by gang banging.

Besides with all that time your wasting on the internet talking S***, remember you could be listening to REAL LIFE BASS instead.

D Mighty 6x9?:

The problem was that in the mid 1980's car stereo makers cut costs so instead of the 25 to 50 watts r.m.s they went down to a pitiful 2 watts r.m.s.. In fact even today most car stereo decks, even expensive ones are 2 watts r.m.s!!! So car stereo installers just started wireing up the 6X9 to the 2 watts instead of trying to sell the customer another 200 watt amplifier, guess what, 2 watts sucks and slowly 6X9 started getting a bad reputation for not being loud.

However, even today just find a pair of good quality 6X9s with 200 rms watts to each and put your face in it. play normal music or rock n roll, not the bass computer stuff, and tell me that is not loud! You will be lieing if you tell me that is not loud! A pair of 6x9s are really loud if there playing normal music not the death bass stuff. After discovering this, I proceeded to install 4 of these 6x9s in all the low rider car rear decks i could find, man those were loud especially for the victims in the back seat! Even to this day for a high db 150db+system I always put in 1 or 2 pairs of 6x9s, at least.

The higher quality ones are usualy 3 or 4 way, so you get the sound quality sparkle superhigh frequencies. Sometime those 4 ways go to 40 kHz! They can sound really good. They also usually resonate high at 100 to 150 hz, this means they will play very CLEAN lower bass 50 to 100 hz. Figuring at the dealer price of about $10 USdollars each, they are really an amazing deal even today in 2017!! Oh ya, there are a few db car stereos in europe using around 20(twenty) 6x9s putting out between 150 and 169db!!!! WOW!! for 200 bucks!! Yes D mighty 6x9.

SOUND QUALITY AUDIOPHILES!!! :

THE A/B TEST?!!!

The "ab test" is a blind test of 2 stereo systems or speakers, set A and set B. you play a sound or music that you know, through speakers brand "A", then as if your blind, with your back turned someone else plays they same music back on set B at the "same" volume (for sound quality or audiophiles). For stadium or PA no volume adjustments are made (efficiency will show). The goal is to face the speakers but have a blindfold on, so you dont know which system is playing. After about 5 songs a clear winner will pull ahead in preference. It may even backfire on you, and what you think is the better stereo. Nothing beats the "ab test". Be wary or suspicious of anyone who doesnt know or NOT willing to do the AB test. A true audiophile loves the AB test, and the truth. A fake audiophile snobb says "its running late, we dont have time for an ab test". Btw set a and set b, they need to run off the same amplifier.

What is not so clear is when a system is "suppose" to sound good and it doesn't, and when a system is "good" yet doesn't sound good, and when some classical music lover claims your sound system is not "FLAT" on the equalization curve(they love to say car stereos are "bass heavy"). Then you have some millionaires spending outrageous amounts of money to get "accurate reproduction"(whatever that means). We know what that means and we will explain it later, because as we will show sound quality is very ,very subjective(changes alot on who you are or what sound system is being used or where you are). Then the RTA real time analyzer guys saying your system is "spiky" or "nodal". The AUDIOPHILES will want to see the price receipts first before listening, that way they can prepare their ears! I know because a part of me is still an audiophile. We want theeeee best and of course the more expensive the happier the AUDIOPHILES. As long as they dont try speaking science or physics i will leave them to their own opinions. But it sure is irritating to hear yoga instructors talking about "quantum physics" as much as an AUDIOPHILE talking about "transiet response times".

Do you have what it takes?!!!

AUDIOPHILES have good ears. Really good ears. Not everybody does. Do you have good ears?? Not everybody has good ears, or ears good enough to be an AUDIOPHILE. Are you a dj? do you have a nice stereo? do you love music, and usually prefer it to videos? do you plug your ears quickly when loud sounds, fireworks or car backfires go off near you?? do chalkboard scratches bother you? I am an audiophile, a good audiophile, but not the best. I stood next to concert symphony violinists as they were tuning their violins and what i thought was in tune was NOT. they continued tuning for another 6 minutes, WAY beyond what i could percieved (these are called partial "semi-tones"). Dj's have music speed controllers, they can speed up a song or slow down a song. As an ex dj i can say most of the dance floor doesnt care +-3.0 %. At +-6.0% everyone can notice. Supermixer dj can tell +-0.4%. I have tested some people on thier favorite song at +-0.3%. Amplifier distortion is generally noticed audiophiles at 1.0 %. Most amplifiers, even cheap ones are WAY less than this. So "audiophiles" read alot about stereos and distortion statistics. They are very good at memorizing statistics from many different brands that dont really mean much. They usually read way more than they listen. Money. Lots of money for audiophile quality stereos, get ready to spend some. Then you need your listening space to be quiet because the music cant mix with the jackhammer down the street. The goal is to be happy, happy with your money, happy with your ears. If an audiophile is happy , im happy with them. If an audiophile is a snobb or says your stereo sucks, ya well tell him to "f*** off and a buy pair of earplugs". If your a db king, go to a local audiophile stereo store and learn something, you may enjoy it. If your a audiophile, go to a local car stereo show and learn something, you may enjoy it.

First of all, what is sound quality? How do we define it? Who defines it? Who gets to define it? Why was it defined in that way? Many questions yet the answers are quite surprising, and raise even more questions.

Let us first be clear that most of the problem with sound reproduction/playback and recording/playback is microphone and loudspeaker related, very little distortion is caused or introduced by the "pure electronics"(amplifiers, mixers, computers, AD, DA converters, CD burners, wire, cables, ect.

High sensitivity and loudspeaker efficiency definitely make a sound system sound better, along with higher power amplifiers. Why? higher sensitivity means higher cone acceleration, larger amplifier means faster and higher cone control braking, combine the 2 means a very controlled and faithful woofer cone. Q, Qts, Qms, "bla bla bla" technical stuff does have alot to do with the qualitys of a loudspeaker but NOT neccesarily the quality of a loudspeaker. In others words, dont overread a product, check it out listen to it, use it, price it.

Factors affecting sound quality that will eventually be explained with more time check back for more info;

Signal to noise. This is the db difference between the sound you want to hear (signal) and the sound you don't want to hear (noise). The larger the signal to noise db number the better. Various signal to noise ratios are listed below, in order;
140+ = many metal alloys at room temperature, at least 10E+14 easy range
140 = human ears, linear range
131 = 2 Gigabytes per second data flow!!! OC-48 synchronous optical net
130 = 64 bit laser fiber optical computer freak system network
125 = dvd top of the line
119 = computer hard drives
118 = VCR tape
108 = vinyl records on expensive turntable, harmonic DATA in high frequency harmonics and sound the best and 2 to 3 hz!
106 = cassette deck top of the line, harmonic data content
105 = dvd ordinary
102 = Digital recording devises
98 = minidisk
90 = CD audio music
88 = reel to reel top of the line
82 = cassette deck top of the line, amplitude only
78 = vinyl records on expensive turntable, amplitude only
70 = YOUTUBE SOMETIMES direct digital uploads
65 = high quality music
60 = MP3 recordings at best
55 = high quality FM radio music
45 = internet music video web sites, ect.
40 = ordinary sounds
30 = pocket am radio
20 = poor quality
17 = The minimum signal to noise for hearing recognition with 2 speakers playing the same sound.
10 = a fuzzy long range overnite HAM or SHORTWAVE radio station from the other side of the planet 12000 miles
1 = The minimum signal to noise for hearing recognition understanding with 2 different sounds.
-17 = The minimum signal to noise for hearing recognition but no resolving with 2 different sounds.

Object VS noise

Object distance VS source VS loudspeakers VS ears

Spectrum

Total SPL (db) of the source is very important. The db levels of the recording playback should be close to the actual source. If you record a singers voice that is about 85 db in real life, you should listen to the recording at about 85db. If you record whispering at 40 db you should playback the recording at about 40 db.

Sound velocity

Harmonic spectra

Loudspeaker Goals. A loudspeaker has many different jobs and many different goals, usually these are competing and conflicting goals. here is a short list of goals;
High efficiency
High acceleration
flat frequency response (+-1.0 db)
unlimited frequency range (1 to 80,000 hertz)
zero mass
zero magnetic leakage
zero mass cone and voice coil
even order harmonic spectrum
infinite power handling
infinite excursion(amplitude)
infinite coil strength (MMF)
infinite BL(TESLA-METER) force factor
infinite physical size diameter LOW frequency(infinite air ohm load)
zero cost(price)
zero frequency transition time
zero time smear
zero physical size diameter HIGH frequency(point source)
zero directivity, unlimited dispersion in all frequencies

Microphone Goals- lower cost, flat frequency, high db levels

Recording Engineers and Soundmen. These recording engineer guy's are people usually with very good hearing and a love for music. The problems that can happen is that over time the high db level music they have heard all their life catches up to them and their hearing suffers. Also their ears are not your ears. The sound systems they listen on when making recordings is not the same as the sound system your using when you listen to their recording. We are not going to list all the good recording studios, but TIME WARNER, ABBY ROAD, and most ELECTRONIC RAVE MUSIC recordings because they are usually all digital, from source to recording to CD.

Many top 10 songs are sung totally flat and out of tune, i.e. some notes that shakira sing are way out of tune, but shes on the top 10. many people cant hear slight out of tune notes, say note A 440 hz from off tune A 443.2 HZ

My clothes are moving...this must be a good sound system? The first time i saw my clothes move was in from of an array of large bass bins and a concert. may pants were MOVING! I couldnt believe it. The bass was moving my pants! I had earplugs in, but could not resist climbing into 1 of the very large bassbins and my pants were moving like a hurricane!!It was pounding my whole body, And the wind from it was cold temperature, really cold. IT WAS SO EXCITING AND SICK! I realized this is what I was missing in my life, and that I need this. I needed this and i did know why but I knew I needed this in my life forever.

Record any cricket chirps lately?there are some Phd students or NATIONAL GEOGRAPHIC employees who occasionally record cricket sounds or tiger growls or equally bizarre sounds. They try to figure out the difference between a cricket thats sick or has a sore leg versus a healthy cricket ect. Anyway they contact me about getting flat frequency response and absolute fidelity. ok, great. maybe i can, sometimes maybe i cant. but for sure when i do, it sounds like crap when you play music though it. Why? millions of reasons. the main one is that "perfect" fidelity flat systems have no harmonic content(just like cricket chirping) and no surprise music(huge harmonic content) sounds horrible on these type systems. this is basically the same reason a "stratavarious" violin cost $6 MILLION dollars and an ordinary violin costs less than a $500.

Linearity and non-linearity. Is given alot of importance by alot of people.I really dont think it is that important, either way. Usually in the normal 60 to 120db level of music listening linearity is constant and smooth and correct.car show judges usually will deduct points if your system sounds more or less bassy with changing volume levels. They want the ratio of the highs to the bass levels to sound the same no matter when the volume knob is.

Money. The cost of audio electronics has gone way way down. everything is so low price now. money usually doesnt stop you from getting the type of sound that you want.

Flat response?Most people think flat response is 20 to 20000 hz. Incorrect. While this is the range of most human hearing, there is still 1 octave higher and lower which the ear and body perceive, it is also called the first harmonic or first subharmonic. So that would be 10 to 40000 hz. VERY few systems are flat response output to 10 hz. the first reason is most amplifiers put sub filters that kill the bass. They usually say 15 or 20 hz but REALLY start filtering right at or below 30 hz, i know, i have measure dozens in our laboratory. This is annoying!look for amps with a on off switch that let you decide. Our company makeitlouder.com also specializes in modifying bass computers or epicenters and certain car amplifiers to play to 10 hz flat response at reasonable prices, 1500 watts RMS@1 ohm to 8000 watts RMS @1 ohm clean. just call or email us: help@makeitlouder.com

Ultra Acceleration

Materials

Cost and Price

Normal ears VS good ears VS the human limit

Source size VS reproduction size

Time smear. there several kinds of time smear. first is when your speakers are different distance from your ears. second is when the shape of the speaker causes the length to your ears to be different.3 and very important is the speaker cone acceleration. recreating a gunshot is hard for speakers, gunshots and fireworks are 25 microseconds fast. speakers are not that fast and our ears can hear that time smear.

Environmental noise

Who knows how loud composer BACH or MOZART would have his bass level and car stereo?

Computers, MIDI, SYTHESIZERS, SMPTE ARE NEW INSTRUMENTS without definitions. it is US, OUR generation that is deciding how loud, and how much, and how synthetic music should be or is becoming. In the 1700's the composer BACH was revolutionary and ahead of his time and was occasionally banned from playing certain songs, because they sounded to "abstract, heresy and ungodly".The same situation is going on now, with some people saying this and others saying that.

Snobbery and people who think their better than you. People who think or like to think that their rich are usually snobs. With real super rich people it is obvious, like britney spears or other famous people or corporate CEO's, or usually because they have many houses all over the world. These people usually try to "fly under the radar" and do not brag or "rub it in" the fact they have lots of money.Snobs, however love to "flex" and brag about their systems, and usually like their bank accounts, it is not as great as they claim it to be. These systems are usually nice, but not top of the line. You can get this stuff at the expensive part of your neighborhood circuit city or best buy. Nice? yes. "flexing material" no.

Louis Vuitton sound systems, are very exclusive brands that no one has heard of, or that require an invitation or reservation to hear and purchase in one of their exclusive showrooms, with the typical scene;; an old guy with jacked up hair, bad breath and retard color mis-match f-up clothes. His assistant, is usually a young hot chic in a short skirt and high heels in the corner, champagne, chocolate strawberrys and lucky you, the snobby looks are available at no extra charge. The dude or a big sign always says; "please dont touch equipment" or "ask for assistance". Irritating, like your in a surgery room or flying airplane. Equipment Looks very beautiful in usually mirror, chrome, or iphone style mirror black digital faceplate. Handmade and usually in the US or some european country.Sound good? High Quality?you bet! maybe even tear inspiring, but $46,000 for speakers and another $25,000 for the receiver to play them on, makes me rather buy a corvette car with the money. did i forget to add the $65000 turntable? Millinials are like: "google!, whats a turntable?"

Sure looks good to me Is about "marketing" and "branding", or even "marketing design". I remember the first case of this was in the early 80's, there was a car amp that was big, about 18 inches long and pure black. It was so beautiful! it was supposedly 300 watts which was ALOT back then. anyway after a long wait i finally got one. Big dissapointment!, measured power myself at about 4 x 30 watts, then i took it apart. Big surprize! out of the 18 inches only 3 inches was the amp electronics, the rest was empty!!! Even worse they actually had the nerve to GLUE lead fishing wieghts to the inside to "feel" heavy and solid!!! What a horrible feeling it gave me, half angry half ripped off. That taught me 2 valuable lessons, get over negative feeling as quickly as possible and dont get "hyped" by marketing. Anyway that was a long time ago and that "company" is still going strong and making lots of money, thier name rhymes with the building "LUXOR" in egypt. Dont buy s*#^ you dont know.

Do you want a cookie? This is about people or companies that over market and underdeliver. db and audiophile. They brag about this and that but when you look at the numbers, there not what they claim or should be. When you listen your not impressed. So instead of listening to their stories just hand them a cookie instead, at least it might keep there mouths from bragging a little while.

Microscopic shock waves. Many ordinary sounds have Microscopic shock waves in them. Suprizeing huh?. No reason to be scared though because they are very small in size, however they are fast moving particle of air and reproducing them accurately is very hard. Like the sound of an ordinary hand clap, or a bag of microwave popcorn popping, or the very hard rubber toy balloon pop. You can test the sound quality of a speaker using these sounds for a very hard test.

Infrasound (bass)Bass below 20 hz is infrasound. Dumbdumbs think we cant hear it , or feel it. dumbdumbs believe inccorectly below 20 hz is unecesassary. DUMBDUMBS are wrong!! On a good system Are your clothes moving when you hear the sound? if so chances are you got some bass power. even better ultralow power that you really cant hear like infrasound like an earthquake, you hear things around you vibrating louder than the sound itself. 10 hz is the goal at least for superfidelity and sound quality, and the car stereo hair trick "hurricane"

Ultrasound (superhigh frequency) Go for the 40khz supertweets when you can. i know your thinking humans cant hear it but yes, you will hear new upper harmonics sparkles on your favorite song. Always have sound at least to 40 khz!!!

CD's suck. why?Its because they "quantize". Quantizing means they turn analog into digital. this is great and fine in the low frequencies but above 5000 hz and more they begin to distort the original sound wave. gets worse at high frequencies, at 20,000 hertz it is 50 % distortion.

MP3's suck even more. I know the theory 310kb/s and "bla, bla, bla", but anyway like CD's they quantize, but worse they also high frequency filter, above 14,000 hz you hear nothing. after a few hours of mp3 listening many people get a headache. no high frequencies is the reason why.Furthermore, nightclub sound systems are usually about 110 to 120 db in the vocal frequencies, play to many mp3 at that volume and people will begin to complain about the crappy sound. normal people will complain, not just stereo people that have better ears. Yes even the 340k mp3 suck!!! Yes they do.

Headphones:real serious people about sound ONLY use headphones, nice, big expensive ones like Sennhieser or Stax Electrostatic. stereo separation is basically infinity, frequency response is flat, frequency response to 10 hz, zero time smear and crossover distortion is zero. seriously, headphones are the ultimate sound below 130 db.by the way headphones are big ear muff type outside the ear things,\. Lately many improvements have been made with baby tiny earbuds like on ipod or walkmans, earbuds are called i.e.m.(inner ear monitors). They use small loudspeakers called "dynamic drivers" full range or a mix of dynamic drivers with B.A.(balanced armature). Balance armature are very small speakers that work with a coils and small flat diaphram, sometimes neo magnets are used..some BA can reach 40khz!, they sound really, really good, and cancel out the ambient noise with active noise reduction and or tight ear silicone tips. WE! MAKEITLOUDER.COM, WILL BEGIN SELLING AN AUDIOPHILE E.I.M. WITH NEW TECHNOLOGY!!
INSANE HIGH QUALITY AUDIOPHILE!! the BEST SOUND YOU HAVE EVER HEARD!!
FOR REALS!!!!

Turntables: are the best for good quality analog sound, this is because there is no analog to digital distortion and no high frequency distortion like with CD's and mp3's. Furthermore turntable needles give you all the harmonic levels that are quiter than the loud part. computers and CD and mp3 filter out any quite sounds below the primary sound wave. get a good needle, like a shure V15 or stanton 550, or ortofon. Big heavy platters and little rubber band motor systems. for dj"s the technics 1200, even though a direct drive. Light tracking force needles will extend the life of your records and have better high frequencies.

Evolution what i see, is better, louder, cleaner , cheaper audio electronics. who decides the direction of the "growth"?? not me and not you. more likely some really wierd executive nerd at "apple" or "youtube" or "google". and half the time the direction is for more profit for them, not actual quality improvments for you the customer or world. Everything for sure is for snooping and spying on you in you own home. "Siri","ring", "alexa" are made by the government for the government, for "inteligence" gathering. gathering your private life, your in house, behaviors, desires, attitude, love relationship condition.

Mosfet VS Tubes VS I.C. VS IC emulators/simulators The endless debate about which is better..... i say try all of them , then go with what you like. jimi hendrix will prolly like TUBES. military laboratory prolly wants MOSFET. electronica music producer prolly intergrated circuit (IC) IC EMULATOR with a "codec"(for modifing sound). in the end the modify the original shape of the waveform of the incoming sound, and add a certain amount of harmonics and or distortion. Is all distortion bad?? No not always. some distortion and an "analog" warmth. like the diference between looking at a phot of a sunset and watching a real sunset on the beach.

Stereo,3, 4,5,6,7,8 channel or N-channel systems In the old days you would get 2 speaker stereo, then add or rewire 2 more smaller speakers and put then in the corner behind you. It would add a time delay and a nice balanced sort of cloud or hologram expierience. Well some large companies like "pioneer" and "sansui" caught on and began making "reverb" processors. This greatly increased the beauty of sound a music. Eventually "sansui" branched out and made a dedicated 4 channel reciever. WOW! it was amazing sound. Computer systems or special applications may use multiple channels called "n-channels". Movie theaters use 5 or 7 channels, typicaly "DOLBY" brand. I personally like "Quad" or 4 channels. A "CODEC" box is a computer chip that has all different types of envioronments; stadium, church, ect. including a time delay or multiple channel delay. these boxes can really really improve your sound music quality.

Can I get an echo?All real sounds have an echo. it may not be a loud or strong echo but there is an echo. Unless your receiver or recording has the echo or an echo function in it you will never have the "authentic" sound. The fastest way is to use a processor box or the button that gives you the recreated sound of a stadium or church or large hall.

Computer controlled systems are used in high tech or military systems to control the signal path on a high Mhz or Ghz rate

Quantization quantization is the process of "analog to digital" or digital to analog conversion or both. The acronim is "ADC" or "DAC". the increasing quality is the larger bit level, more bit level is better such as 20 bit, 24 bit, 32 bit. standard CD is 16 bit and at 44khz sampling rate. Very good CD will be 20 bit / 96 khz .The more bits the "smoother the quiet portions of music will be". 32 bits is very high quality. In top level recording they will say the "SPARS" code. the SPARS code is 3 letters with A = ANALOG, D = DIGITAL, first letter is the input recording the second is the conversion the 3rd letter is the output. so examples: AAD. DDA, ADA, DAD, DDD, AAA, ect. some recordings are DDD. some are AAA. many CD will list the SPARS code. Many people incorrectly assume that 20 to 20khz is the recording /playback goal, so they think 16 bit/ 44khz is "good enough", however it is not. 20 bit 96khz is approaching real good quality. Some studios use 24 bit 396khz. however that may include 15 khz and higher frequency noise/distortion.

Planned obsolescence. Companies are usually trying to increase profits by making new models every year or 6 months like apple phones, why? greedy! Is the new model is better or different? yes, maybe. does it matter to you you? yes, no, maybe? future changes they are already planning- killing the CD. why? cuz they cant make money off you.changing to 40 volt car electronics. changing to a car that nags you, txt you, and emails you. killing off all bass below 30 or 20 hz, why? cuz their dumb? maybe. Its so they make more profit off you. "excessive" profit(thats legal terminolgy). The iphone company today decided to make the "i7" with the no headphone jack!why?? i know why, MONEY, CONTROL. the power to do that without asking your opinion gets them high.waterproofing a headphone jack is easy and cheap, they dont want that for you, they want to squeeze the money out of you, squeeze you like a lemon making lemonade! in scary news i cant make up: DISNEYLAND is taking fingerprints today!just like an arrested criminal when they go to prison. we have to think and let these companies know we dont agree.

Can I get some fries with that shake? Some high power car stereo's can violently shake and vibrate a car and anyone in it. Most people are scared at first but them begin to love it. Vibration and thunder and lighting is a basic human primal instinct and fear, for thousands of years.This releases primal hormones in human beings and generates a new type of listening experience. Now that we are fortunate to live in this time where we can recreate this whenever we want is truly a blessing. From a technological perspective it is a fact that a system that can do this is to some extent IS HIGH QUALITY (although not always perfect sounding). Equally absurd are some "audiophiles" who listen to low bass music through loudspeakers with 6 inch "woofers" claiming the "fidelity" is outstanding. Even if the fidelity is good the thought of weak 90 to 100 db bass has me yawning. Many of the audiophiles worry sleepness nights over amp distortion stats., and speaker wire. I am audiophile also.I just realize at a point we need big violent speakers for accurate reproduction at bass levels above 100 db.

I have the right to hear what I want, in the way I want to. Some people want the bass at 140db and the highs at 90db. some people dont like bass??wtf??some people dont like bass so they listen and 80db. most people like the bass 20 db louder than the highs, this give a powerful cleans sound. most stadium or rave systems are 10 db bass gain. The rave jungle or trap zones are 20 db gain in the bass. Yamaha corp. used to have a "natural" line of products, good, ya, but i personally dont like "flat" systems. i like the earthquake boom and crystal sparkle and my eq. looking like a smile. Some audiophiles dont have an eq., never adjust the bass or treble settings, as a bragging point. My difficulty with this is that even if it was perfect (unlikely), the very best it could sound would be that of the recording engineer, and they are notorious for bad hearing from alot of years behind loud speakers. And anyway , who says this guy has better ears than you?

WE will add alot more on this later

Hyper technical:

"bass in your face", Elmer V. Carlson for those who are lucky enough to understand it;

click here and let the ride begin: Method of Using Electrical Analogs of Physical Structures.pdf

TOP 50 BASS SONGS!!!:

MUSIC

top 50 bass songs countdown ONLY IF your frequency flat to 10 hz @140db and have a bass computer! wear your diaper...

50. Family guy - consuela kicks brian out of the house (AFUERA!!!!)
47. burn rubber remix - gap band
46.
45. gas pedal - Sage the gemini , 22 HZ THEN A GNARLY 11 HZ TO JACKHAMMER YOUR SHOES OFF!!
44. Teach me how to dougy remix- Cali swag syndicate
43. I need a freak- Sexual harassment
42. bounce, rock, roll, skate -Vaughan Mason & Crew(we won a db world championship with this song)
41. i will remember just give me a second.......
40. my hardcore rhymes - Le juan love (25hz drone beat)
39. Shake it- MC Shy D + luke skywalker remix 5:10 ( last 40 seconds has a really disturbing bass line, 1989?)
38. Fix it in the mix - Pretty Tony (this has a bass melody from the ultimate producer pretty tony)
37. any song by - Mantronix (nyc early rap with the roland 808)
36. Boot the booty - Clay D, 4:30 (a disturbing 25hz bass drone!)
35. Numbers - Kraftwerk (33% slowed) (we won a db world championship with this song)
34. Faded- Alan Walker ft. Iselin Solheim (dj salvador) 3:53 (just so awesome bass with harmony)
33. Fantasy (you are my) - Acid Factor, George Acosta's Massive Phunk remix [high drone bass 400 to 40 hz]
32. 8th World Wonder- Kimberley Locke [shes singing about me and your mom when we first met]
31. paul revere - beastie boys [STILL, a niteclub tail wagger in 2020!]
30. white horse- laid back [youuuuu bitch!... lean into a big bass bin and this will remove your wisdom teeth ]
29. electric kingdom -twilight 22 [so tight and yes the bass computer will bitch slap this song]
28. back to the hotel- n 2 deep [with computer the bass will just drone on and on], and on and on......
27. cars that go boom- L'trimm (tigra and bunny)[first radio pop bass song ]
26. power of goodbye- madonna [oooooooh the fadeaway deepness of 50 to 10 hz bass]
25. toccatta and fugue in d major- e. powers biggs-bach [has never left the top ten song for last 310 years!!!!]
24. my club 42? murder murder- ? [london rastifari drone drone drone.......]
23. born to roll- masta ace [a system tester for echo thunder deepness ]
22. bounce back - big sean [for bass you can eat with a fork]
21. egypt egypt- electric kingdom [this music creator has given the world so much]
20. how much can you take- mc a.d.e. (perfect for scareing your dog on holloween)
19. P.E.B.500-techmaster P.E.B. [1st pure computer bass cd]
18. gangsta party-tupac (a classic! awesome bass melody 200 to 25 hz)
17.5 sunday afternoon in the park - Van halen (rock and roll! electric guitar meets synthesizer)
17. im not your toy- La roux (nero remix) [its like skrillex without the irritating scratchy highs]
16. my booming is a booming-bass gangsters [even your grandma will like this]
15. glamorous - furgi + ludacris [11 to 40 hz , really?, REALLY]
14. started from the bottom- drake [ "straight gorgy!"]
13. "salt shaker" "roll like an 18 wheeler" remix- yin yang twins [OMG, hits like an 18 wheeler!]
12. everytime- britney spears [you, your woofer and your girlfriend and can all hold hands and sing along!]
11."KILLA WHALE" - ANDRE NICKATINA 4:38 (a real woofer cooker)
10."BOULVARD DE SUENOS ROTOS" - CHANEL (chunky monkey bass 10 to 40 hz)
9.MOTORCYCLE "AS THE RUSH COMES"- (GABRIEL & DRESDEN CHILLOUT MIX)(you know.....the rushhhhhhhhhh.....)
8."LIKE THIS AND LIKE THAT"- CHINGO BLING (play the find the 11 hz game! its in there believe me!)
7."OOH LAWD"- DJ SMURF AND THE PMHI CREW (this "magical" bass song sounds different in every single system. awesome for system testing or car shows!)
6."BASS FROM HELL" -QUAD FORCE (just total nonsence. period.)
5."20 X 15's" -BASS PATROL (letting you know "your 6x9s wont shake the ground!!!")
4."SILENCE" -DELERIUM ft SARAH MCLAUGHLIN 11:34 (oh the breakdown has this 5 to 25 hz hurricane!!!)


and now "double check your diaper kids!!, there's no turning back now!!!"


3."IM GOD" (SLOWED 800%)- CLAMS CASINO (gods in the title, so you know it must be good)
2."LIGHTER SHADE OF PALE"-SARAH BRIGHTMAN (PARALYZER REMIX LONG VERSION) 9:06 (here's some class and "haute couture" for you "keeping it real" ghettofied dirty birdy gangstas! Jumpman says "caw, caw" )
1."THE ARRIVAL OF BASS" DYNAMIX 2 (5:36) (did you really think dynamix 2 would miss the list?,really?? hahaha!)
1.LA ROUX "IN FOR THE KILL"(SCREAM REMIX)[slowed]##INSANE DEEP BASS##(a freak song for bass freaks)
1."BXVUTIFUL THINGS"- MYSTXRIVL 5:34 (4hz, but who's counting? life changing song when you understand it. Score: BXVUTIFUL THINGS = 853000, suicide = 0 )

1."HARDWAVE"- SKELER (31:48 MIX) DARKSTAR WHITELIGHT (the 6 hz FURY FN HURRICANE!!!DISGUSTING!!!)

1. "AND YOUR WELCOME"- YOUR MOMS LOVER (HAHA, YOUR MOM!)

1."EMAIL US YOUR FAVORITE BASS SONG AND WE JUST MIGHT PUT IT ON THE LIST"(better not be 3 six mafia!cuz thier bass dont be shaking da ground)