im not sure what is worng with my headunit or my rear speakers, my head unit is deh-p4750mp and i was driving today and all of a sudden i got alot of distortion coming out from back left speaker, and when i turn the volume down to 0 it makes a loud click noise, and it dose it now when i press any of the buttons on my head unit, loud etc. can anyone please help me i would like to know what is wrong if its the head unit or speakers, it was all working fine, but now its not, i did have a sub hooked up to a 2 channel amp but i have reaclently taken it out, would of tht caused the problem?
Try swapping speaker connections L/R to see if this follows to the other side.
If not, either a speaker or a HU problem. If it does follow, then likely the HU. Check all your connections to make sure nothing is shorted or rubbing.