MBaltz

Ok, I can't seem to find the problem so I'll ask you guys. I've got a '93 touring with the infamous Bose system. The problem I'm having is that the driver's door speaker only hisses (very loudly) about 50% of the time. I know it's not blown...it does play about half the time. When I put the key in the ignition, it either hisses or it doesn't. However, it never goes from hissing to playing or visa versa. It only changes if I turn off the car and restart. I've taken off the door panel to check the wiring harness, and everything seems fine. I'm at a loss with this one....any ideas??

djantlive

When you took off the door panel, you checked the speaker right? When a speak is blown, it will still make sound, just has a crackling noise. The hiss could be some sort of interference. Perhaps some ground wire in your head unit got loose?

MBaltz

Yeah, I looked the speaker over pretty well. Like I said, about 50% of the time it actually plays fine (no hissing, crackling, etc.), but the other half it just hisses (no crackling or popping). I was wondering myself if it might be interference, but I'm not sure from what. I'll slide out the head unit and check for a loose ground. Any other ideas?

ech

there is an amp inside the door enclosure. You need to find out where the signal is getting lost. My guess is that there is a bad solder in the head unit, or on the amp board. Figuring out where the problem is will be a first start.

You might also be able to connect output for the passenger door to the driver's door speeker. If it then works - you know the problem in the head unit, etc. etc.