Sleezyk Posted June 18, 2016 Report Share Posted June 18, 2016 So I buy new Sky High Car audio RCAS and when I plug one of the channels in I hear a alternator hum through the subs. The other channel does not do it. AND NOW THE CRAZY PART... The Hum Goes away as soon as I plug the other channel in. I can even just touch the outer metal to the RCA input and it goes away. Does my Head unit have a bad RCA jack or something? It works fine as long as both are plugged in but really weird. Its like one channel is not being grounded. SETUP IF IT MATTERS: Rockford FOSGATE P1000BD AMP SUNDOWN SA-12's Ported BOX that I made myself based of sundowns requirements. BOSS Audio FTW! Link to comment Share on other sites More sharing options...
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