[757labs] 20,000 Watt Car Amp CL Ad, follow-up post

telmnstr at 757.org telmnstr at 757.org
Sun Feb 19 03:05:53 EST 2012


> For Harold: http://www.youtube.com/watch?v=RRDA64OegJY So if we're 
> talking about exhibitions systems, 1200 amps is pretty insane but I've 
> seen full size SUV's with custom mount brackets for 3 and 4 GM AD244 
> (220 amp rated) alternators on the engine (and now thanks to youtube 
> I've seen even more). Ethan has talked about systems that use a
> hydraulic drive system to run a sufficient number of alternators to 
> power the stereo continuously. You'll also see plenty of them that run

Here it is! I saw the topic but haven't read the entire thread yet. Here 
is that Blazer I was talking about that had one alternator under the hood 
and a hydraulic pump where the HVAC compressor went. It drives 4 more 
alternators mounted in the back of the blazer. There is 4 amplifiers that 
are insane, 2 on each side, behind the back side windows on this blazer. 
All of the windows are on actuators. And the paint job is all painted bad 
ass. The truck caught on fire, but I guess the guy rebuilt it. Here is 
some really bad pics:

http://faculty.tamuc.edu/jdavis/phantazm/trey.htm

These low res pics do not do it justice. The magazine shoot was ... wow.

This isn't loading forme, but it's probably the article I saw.
http://www.caraudiomag.com/pictures/old-school-world-famous-hifonics-blazer

Modern version of the amp that was in that truck:
http://www.hifonics.com/Hifonics_Colossus_Amplifiers.html
3200 watts RMS @ 2 ohms x 1 channel
1600 watts RMS @ 1 ohm x 2 channels

The idea of these amplifiers is driving large numbers of 12" or 15" 
subwoofers in series/parallel combinations. Some of the subwoofers have 
dual voice coils.

Manual doesn't saw what the current load is, just that it's fused at 300 
- 350 amps.. Gulp.

There were classes for competition, and there would be like a 5 watt and 
lower class. There were amps that would put out "2 watts" and crazy ohm 
loads and such for that.

Odd world.

There were raw SPL competitions (loudest system wins), but quite a bit of 
it was "sq" competitions. Sound quality. People ripped apart the cars and 
covered the body in noise dampening material (dynamat) and did wierd 
speakers. 8 channels of amplification all crossed over at frequencies.





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