I've been having problems with my front left speaker. It plays fine if the volume is quiet but if I turn it up it has a buzzing sound, I've replaced it with my old stock ones to see if it was the speaker but it still does the same thing so I'm guessing its a wiring/connection problem. Lately Ive just listened to music with the Fade all the way to the Rear as I have decent rear speakers and I was getting tired of the buzzing, but today I played it with the Fade in the middle and in the middle of a song the front left speaker stopped producing sound all of the sudden and my head unit (a Sony Xplode) displayed 'Failure'. Now it is almost better as the annoying buzzing has stopped but that speaker doesnt put sound out at all now, what can I do to fix this and what seems to be the problem with it? This problem was here before I installed the headunit and it still had the stock stereo.