feedback problems

[csheriff 10+ year member]

I just recently had my car in the shop to get a new transmission, and when i got it out, im getting a ton of feedback through my speakers, and i cant figure out how to get rid of it. does anyone have any suggestions on what to check?

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[zerohertz 10+ year member]

It most likely has something to do with the RCA's. Do you have a aftermarket head unit? Usually when someone doesn't, they have a high/low impendence box somewhere to make up for the preamp outputs. Find where that is and try moving it somewhere else further away from your speakers. Or, turn down the gain.

 

[csheriff 10+ year member]

yeah, everything is aftermarket, and i dont think it has anything to do with the rca's. normally it prolly would, but this occurred because of a ****** swap. theres no reason they should have touched the rca's. its gotta be a grounding problem, i just cant figure out where to start.

 

[zerohertz 10+ year member]

That's true but I'd check them out anyway.