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Message: <blockquote data-quote="PaulD" data-source="post: 5206931" data-attributes="member: 589636">sounds like you have several problems, making it hard to diagnose.  If all the lights are dimming with the bass then your electrical system is not keeping up, may be as simple as a poor ground or too small of a power cable going to the amps, or a loose power wire connection.  If you disconnect the RCA's at the amp and the humming goes away but disconnect them at headunit and the humming is still there then it's coming from the RCA cables, or more accurately, where the RCA's are run - you obviously have them close to a noisy spot somewhere.  The popping noise is probably from the same source as the hum.As for the odd sound in the subs, you have to do some substitutions.  Try using a different sub box, then a different amp, etc ..  until you figure out which one is the offender.</blockquote>

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