Buzzing coming from speakers

[JSWalsh25]

Hey everyone I have just installed a older amp the Alpine PDX4.100 on my cousins cars, came from my old car. and I installed everything I believe correctly, but there is a buzzing noise coming from the left rear speaker. so I switched the RCA cable from left to right and the noise actually moved over to the right rear speaker. I do have the power cable running on the other side of the car from the RCA's and speaker wires but the negative is on the same side idk if that has to do with it. what could be wrong.

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[CSCStang]

Try a new set of rca's.

 

[los33 10+ year member]

If the buzzing noise switched when you moved the channels around then your speaker is out of phase.

Meaning you have the negative in the positive and then positive in the negative.

Check all your wiring coming from the speakers.

 

[JSWalsh25]

Okay so I did what you said los33 and it didn't change a thing... I went to the store got new RCA's and that fixed the problem and I took a look at the old RCA's by kicker and you can see inside them and right by the the part it goes from 2 separate wires to one a wire was torn... It works now thanks for these answers, I kinda thought it would be the RCA's but want to see if anything else just in case.