I have the high pitched whining noise in my speakers, which as I've seen on the forums, alot of people seem to have. The difference is though my stereo was working fine for about 6 months, then I was driving along one day and went over a bump in the road which caused the car to jolt pretty hard, then straight after that the speakers started to whine, so loud I thought I was going to go deaf!
Anyway my setup: 4 speakers run off amp, RCA's one side of the car, power the other side, kicker amp in the boot. Front kicker splits have cross overs.
I was hoping someone might have an idea what could cause this to happen from a sudden jolt to the car, might help point me in the right direction to find the solution. I also rechecked all the grounds tonight too, something interesting is that when I didnt have the headunit grounded, but turned the car on (so the headunit DIDNT turn on) I still heard whine through all the speakers.
Any help would be massively appreciated.