Question about Rockford Fosgate Punch Stage P110 S4 Car Subwoofer

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Static Interference With Subs

Im having a problem with my subs. everytime i turn on my car my subs will start buzzing only when the car is on. when i turn the lights on to my car the buzzing won't be as bad. im not sure what it is anymore. i've moved my rca cable as far away from and other electrical wire too keep the rca cable from picking up interefrence from any wire but it still buzzes. Would you know of anything that could cause this static interference? if so, how do i fix it?

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First test would be to disconnect the RCAs from the amp and see if the buzzing goes away. If it does, the issue is either with the head unit or noise still being picked up on the RCA cables. If the issue stays, it's possible your electrical system has not a nice and clean 12V. You might have to get your alternator and voltage regulator (if so equipped) checked.

Also, make sure the RCAs on the back of the head unit aren't touching anything metal. Set your gain to 50% and see if the buzzing changes. Check your ground connection and make sure it's short, clean, and solid. If you have multiple amps, ground them to the same point.

Posted on Mar 27, 2008

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