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Engine noise coming from speakers - Car Audio & Video

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  • jspot17 May 04, 2009

    I have replaced 2 lower end amps with 2 alpine pdx amps using the existing wiring and now I have engine noise in my midrange speakers which I didn't have before. I checked all connections and rca cables and no fix. Any Ideas. This is in a boat which I have 2 batteries with a perko isolator switch. I have also tried disconnecting the 2nd battery to see if it was some kind of ground loop issue being created from wiring the 2 batteries together. no luck..

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This is very common because your power wire will come straight from you battery. You can do one of two things, buy a farad and run it in between the battery or buy a noise filter and run it right before the amp and this will cut out the noise.

Posted on Feb 23, 2009

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