[geeks] Car audio question

[Matthew Poertner]

What kind of car?  What kind of amp?

Check and make sure you have a good ground...

I used to play with audio equipment quite a bit in high school.  I had a 
1970 VW Fastback.  It had a similar problem.  Also whenever the bass 
hit, the headlights would dim.  I guess the little generator didn't put 
out enough juice and it was taking out quite a draw from the battery. 
 So, I went to my computer repair class and tore apart some old 
computers and took the capacitors (Two - about the size of a coke can). 
 I hooked it up so the amp took the draw off the caps instead of the 
battery.  Sounded hell of clean and the headlights didn't dim anymore.

-Matt

Kurt Huhn wrote:

>Slightly more geeky today,
>
>I just installed an amplifier/subwoofer combo in my car - but can't utilize
>it to it's full potential.  The reason is, whenever I try to increase the
>output the subwoofer will thump and hum.
>
>It *sounds* like it is firing _roughly_ once per three RPMs.  This sort
>makes sense to me - since my car is a 6 cylinder.  This is just by me timing
>the thumps from the subwoofer - not that I actually hooked up a tach to my
>tach-less car and ran it against the thumps.
>
>It sounds to me like I need a line filter for the power lead - but figgered
>I'd ask here in case anyone else has come across the same problem.
>
>Any ideas?
>
>Kurt
>
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