I usually have little to no sound coming out of the driver side front, door and rear speakers. Occasionaly I will have sound come thru at very low volume with heavy static. Passenger speakers all work fine. My thinking was that since it was all three speakers (front, door and rear) it meant the problem was with the radio as my understanding is that the amp behind the rear seat is just for the rear and door speakers. If however I understood incorrectly and the amp powers all three then I suppose the problem could also be the amp. I need to replace the radio anyway, as the FM doesn't work, but it will be awhile before that happens. I was wondering if I should try to throw an amp in to try to fix the balance problem. Oh, and my balance is adjusted correctly. Thanks all