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Problem for Rockford Fosgate Punch 401S Car Audio Amplifier
Noise, not music, coming out my subwoofers
By ronnieyannon on Jul 14, 2009
I bought a farad cap, so my amp would get more power. Cause my lights were dimming and stuff. After I hooked the cap up to the amp some weird sounds started coming out of the subs. The noise is a real high pitched sound. What can I do to fix this?
Clarification Request
Posted by fingaz22 on Sep 16, 2009
did you charge the cap before you installed it? if you did you would have use some sort of resistor like a domelight bulb or a resistor itself!
Best Solution
posted on Jul 20, 2009
I third it, check grounds and make sure you have good solid connection to metal, also what you're hearing is probably alternator noise, you might consider upgrading it, since it's obviously underpowered for your application, a cap is only a bandaid in the long run.
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Solution #2
posted on Jul 19, 2009
It sound like you have a bad connection somewhere...Check your ground cables and make sure nothing has been cross wired.
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Solution #3
posted on Nov 02, 2009
I would say a bad ground is giving you alternator noise through your subs. Also make sure your source unit has a good ground.
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