Feedback in Subs Options

[Random_Stranger]

It never really did that before, can anyone tell me what that means and how I can fix that? If I undo my seat belt, sometimes that breaks it but it comes right back, or if I lower or raise my window.... It's the craziest thing, but I hate hearing it when I accelerate thinking I got a supercharger or something. It's really annoying.

[GriffGirl]

Additionally (sorry if this was mentioned already, I didn't read through all the posts) the ground wire and the power wire should not be in too close proximity to each other. Try to keep them as far apart from each other as you can, and make sure your ground is secure and didn't come loose or something. I'm guessing the feedback increases when you accelerate? My previous stereo did that, even though I checked my ground and moved the wires away from each other. (it wasn't sudden though, it was like that when I got my car). Since I've replaced the head unit though, there's no more feedback, even though I didn't change any of the amp wiring.

If moving the cables doesn't help, there's two things you can do. One, is check your alternator ground. IIRC the feedback is actually from the alternator (hence its increase when accelerating). Also you can actually buy a ground kit that you add on to your amp wiring that filters out the noise.