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With the eight ohm mono load presented to your amp, there should be no issue with overheating. How much air space to you have above and to the sides of it? This really can make a big difference. When I was using a Kenwood sub amp under my front seat, it would shut down *occasionally* if I ran it hard when the back seat was folded, thus cutting off air circulation under the front seats. Oh, also the heater was on at the time because it was freezing outside, so it was blowing hot air on top of the amp with no escape path for the hot air. :)
If circulation is fine, I am strongly leaning toward you having a defective amp, as your wiring sounds fine. Even if one of your woofer's voice coils were shorted, as long as the other was fine, you still would have a four ohm load due to the series connection. I doubt either are bad, though. Definitely try connecting the sub to one of your other amps and see if it keeps playing or shuts down. You can check your sub's voice coils with a DMM or VOM, measure the ohms across the coils (or terminal if you have them connected together inside the box).
If you're set on keeping that subwoofer, you might want to look into getting an amp that's stable into one ohm, which means you could put the coils in parallel and achieve a good deal more output. I believe one ohm stable amps can be had quite reasonably these days.
In hindsight, I would say to those adding amps to their 9000 stereos, wiring in the center console is not easier than the trunk. It may be slightly quicker, because there are less screws and covers to under, but not easier. That's how I did mine when I first installed amps, and I thought it was really cool having them under the seat taking up no space whatsoever. But for some reason I tend to change my system components (except for speakers) every couple years at most, so it got to be a real pain...
Aaron Gilbert
posted by 205.215.216...
, Thu, 27 Feb 2003 18:04:31, Sat, 1 Mar 2003 01:15:37
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