How do i fix squealing from speakers
Instructor
Joined: Jan 2018
Posts: 179
Likes: 26
From: Calgary, Canada
Sounds like you need to either replace the Bose amps for each of the speakers, or replace each of the capacitors on each amp. I just got finished with mine... it's not that hard, nor time consuming really. There are a loads of threads on the forum about this.
Intermediate
Joined: Dec 2018
Posts: 35
Likes: 4
From: DFW Area
Just did that little project (in a 1992)...well, my high school aged son did to be honest since it’s really his car. Replaced all the caps on all 4 of the boards but it only actually fixed 1 of them. Ended up buying 3 new amp boards for about $460. Wouldn’t have paid them to do it but the local stereo shop gave starting price at $1000 plus parts to do all new wiring, head unit, speakers, etc. we didn’t think the car was worth a $1500 stereo system.
If one is working, unplug all the others and move it from corner to corner and confirm the rest of the system is good. In our case, the rest of the system was working fine.
If one is working, unplug all the others and move it from corner to corner and confirm the rest of the system is good. In our case, the rest of the system was working fine.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Just did that little project (in a 1992)...well, my high school aged son did to be honest since it’s really his car. Replaced all the caps on all 4 of the boards but it only actually fixed 1 of them. Ended up buying 3 new amp boards for about $460. Wouldn’t have paid them to do it but the local stereo shop gave starting price at $1000 plus parts to do all new wiring, head unit, speakers, etc. we didn’t think the car was worth a $1500 stereo system.
If one is working, unplug all the others and move it from corner to corner and confirm the rest of the system is good. In our case, the rest of the system was working fine.
If one is working, unplug all the others and move it from corner to corner and confirm the rest of the system is good. In our case, the rest of the system was working fine.
Drifting
Joined: May 2008
Posts: 1,695
Likes: 490
From: Denver, NC
You contact these guys - I have used them and referred them numerous times - ALWAYS a great experience. VERY reasonable.
https://www.carstereohelp.com/
https://www.carstereohelp.com/
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Intermediate
Joined: Dec 2018
Posts: 35
Likes: 4
From: DFW Area
Agree. $1000 seemed nuts to me too. We didn’t look into it further. If the head/receiver unit was toast, we would have replaced it all but son really likes the original type of unit and the amps were easy to replace after he tried the cap replacement. He wanted to try that since he has built a bunch of circuit boards for other stuff before.
Le Mans Master
Joined: Feb 2000
Posts: 9,061
Likes: 214
From: Epping NH
Agree. $1000 seemed nuts to me too. We didn’t look into it further. If the head/receiver unit was toast, we would have replaced it all but son really likes the original type of unit and the amps were easy to replace after he tried the cap replacement. He wanted to try that since he has built a bunch of circuit boards for other stuff before.
The only downside is I use my smartphone for music, so to work with my stock system I installed which works great!
Last edited by bac22; Mar 9, 2019 at 06:37 AM.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Nothing wrong with original systems when operating correctly, audio theory hasn't changed since the 1950's. Problems with most systems today is electrolytic capacitors do have a lifespan that degrade over time giving people the impression that an older system doesn't sound good, but caps are easy to replace with quality caps to bring most hi-fi systems back to original spec.
The only downside is I use my smartphone for music, so to work with my stock system I installed https://www.amazon.com/d/Car-Audio-V...ter/B00DHQ6K7Q which works great!
The only downside is I use my smartphone for music, so to work with my stock system I installed https://www.amazon.com/d/Car-Audio-V...ter/B00DHQ6K7Q which works great!
Drifting
Joined: Jan 2018
Posts: 1,373
Likes: 15
I’m dealing with this same problem now in my ‘89 Bose. I’m driving it back home tomorrow from Florida & the squealing is going to be maddening(I gotta have tunes when I’m driving on trips). I just turn the music up until it drowns out the noise.