Re: I'm sure this is something stupid I've done... whining sound from speakers
it could also be jest the rca cables alone. cheap rca's can do this. but as stated most often it is a ground issue. ground the amp better and ground the batt to the body better, as well as the head unit. it should go away. but the way you can tell if its a groundproblem is unplug all rca cables and turn it way up. then plug in the rca. if it is still there without rca its in your ground if its only there with rca's its coming from the rca or the head unit.
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