Hi, I have a 1990 SE with stock radio and speakers (too lazy to get a new system ) and whenever I start driving and my RPM's go up, or I am in Park and rev up the engine, a sort of whistling noise comes from the speakers when the radio is turned on and the volume is lowered to the max. It sounds pretty cool, but is this a fixable problem? What does it have to do with?

Dmitriy

 

You have the Bose system, right? Sounds like your amps are going out. The only solutions are:

1) Pay around ~$100/ea to get them fixed
2) Tear 'em out and replace the whole system

The problem with #1 is, they might just go bad again.

I'm going with #2

 

My did the same thing, only one-by-one the speakers started to cut out or make LOUD static noise. I disconnected one and now another is doing it. Plus my buttons decided not to work one day while driving down the road. For about 20 minutes I couldn't change stations or set the stations (I was changing the stations when this happened). It finally decided to work, but that night I noticed the lower three buttons were not lit up, but the rest of the head unit was fine. Is this the head unit or the amps?

 

Sounds like a ground wire is loose or disconnected somewhere between the radio and the speaker. That is a common cause for whistling noise in the speaker. If you don't find this quick enough, your speakers can either blow or your radio may go out. If that is not the problem, then you can get a noise surpressor from radio shack and install that. Where to install it, I can't remember. I used to install radios, speakers, amps and subs about 12 years ago.

 

dude, i have the same problem and had a thread posted titled "bose speakers suck". it was up not too long ago. the only real thing to do is replace the speakers.

 

The whine you hear in the speakers is from the alternator. The voltage that the alternator produces is actually rectified alternating current (AC) to produce a direct current (DC) to charge the battery. However, the DC will still have ripple on it.

The active speakers of the Bose system can be susceptable to the ripple, or even the turn signals can be heard in the speakers. I believe that the filter capacitors in the amps dry out over time and become less effective. Or as suggested, there is a ground problem.

I haven't tried it yet, but my first attempt to fix my problem (I have whine also) would be to add filters on the DC at the input to the amps.