Buzzing Sound

[geezy21unc 10+ year member]

ok , i have a brand new , or nearly brand new pioneer 7800, and i hear a buzzing sound coming from the output rca's on the deck, i tried front and rear rcas but both still do it, i never had this problem with my p80mp. but now this one is buzzing a lil bit, whats the deal? could it be too high of preout voltage, or maybe wires to close to other wires or what , behind my deck are alottttt of wires , so i dont know , thanks

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[danz24 10+ year member]

had a buzzing sound from my speakers before, a good ground solved it. ground the HU to the car chasis

 

[revrider1 5,000+ posts]

Sounds like a ground issue