Dissapointed in birthsheet

[iamamp3pimp 5,000+ posts]

OMG this is painful to read......guess what birthsheets are a load of bsit doesnt matter if its kicker or RF...they make them up because they dont matter

you wont hear a difference between 1500 and 1700

you will hear a bigger difference by the box that you run, how well your gains are set and the quality of your electrical system.

most likely if you are running 2 kicker 1500.1s you have an HO alt, the Big 3 and either an upgraded battery or 2 decent ones.

This is the bottom line....

wrong.

 

[UCF52 10+ year member]

I have already PM'ed Polecat in regards to a similar thread over on DIYMA (Click for thread). His response was;

Inquiring about the birth sheet numbers...

"like any other, benched tested, where a car has variables, not steady currect,etc."

I usually won't invest a lot of attention to birth sheet numbers, it is nice to see it and usually comforting.

 

[monsterman 10+ year member]

i heard that Kicker prints off the sheets and randomly just throws them in the boxes. i wouldn't worry to much about it.

thats really funny

 

[drpeeb 10+ year member]

i heard that Kicker prints off the sheets and randomly just throws them in the boxes. i wouldn't worry to much about it.

Yes ... It's obvious Kicker prints them on a color printer, then they just stick a sticker on for the serial #. It's very obvious it's a sticker. (Kicker MX700.5 5-ch marine amp)

 

[cleansoundzz 10+ year member]

The quality of the Kicker amp is far more important. After about 2-3 weeks of driving the birthsheet will become irrelevant. Or buy an old school amp. You will get underrated power most of the time with those.

 

[jpexpc 10+ year member]

Amps are no different than any other electronic. Look up how many databases are kept for CPU serial numbers. Each batch is nearly identical in and of itself. The next batch could be completely different. A lot of people buy their CPU's based on the serial number. If it's not within a certain batch they will move on to the next retailer. I would assume that each run of amps has a baseline and they are all given that rating.

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif They consider certain runs of processors better because they have a higher possibility of clocking higher and running cooler based on previous results within that batch.

 

[944g37 10+ year member]

If your worried about it why dont you test it and see what kind of output you are seeing from it. http://www.sengpielaudio.com/calculator-ohm.htm

 

[natan 10+ year member]

(2 * 1700W)^.5 = 58.3Vrms

(2 * 1500W)^.5 = 54.7Vrms

20 * log(58.3Vrms / 54.7Vrms) = 0.55dB

That is assuming those are actually the real ratings for the amp and you set it up properly. Good luck hearing the difference between 140dB and 140.6dB.

 

[MakeshiftAudio 10+ year member]

I don't think that's even right, since that's dB for signal strength if I remember correctly...

 

[natan 10+ year member]

An increase of voltage of a certain amount of dB should translate into the same shift acoustically, all things being equal.

 

[Unholysavage 10+ year member]

never did understand why people got so worked up over birthsheets.

even if you built an electrical to keep everything rock solid at 14.4V right at the amp's terminals, there's still impedance rise to contend with.

 

[Annnarbor84 5,000+ posts]

Regardless if it was 1900rms you would not see it anyways. You would be lucky to see 1000rms:fyi:

 

[jesterjames 10+ year member]

t10001bd's are notorious for being rated at 1486wrms

with a clamp, oscope and a voltmeter i saw my zx400.1 putting out 562wrms

birth sheet was 445