Engine Noise???

[teenapp 10+ year member]

Alpine 505 HU btw

 

[loopkiller 10+ year member]

Run a temp ground wire from all of your amps to the front battery NEG- post. Make sure it is a decent sized wire, at least as big as your POS+ wire. See if the noise is still there. You might have bad grounds in the car. Running a dedicated ground might solve the issue.

 

[teenapp 10+ year member]

Run a temp ground wire from all of your amps to the front battery NEG- post. Make sure it is a decent sized wire, at least as big as your POS+ wire. See if the noise is still there. You might have bad grounds in the car. Running a dedicated ground might solve the issue.

We are gonna try tonite

 

[pawn man 10+ year member]

if you have more than 1 set of rca cables, they need to be attached together all the way back to the amps. if they become seperated it can create a ground loop. the futher apart they are the larger the ground loop and the more noise. not saying this is the case but, you may check it.