digger89L

The driver door speaker on my 90LS sedan is beginning to do an intermittent pop and crackle routine ...thought I'd ask before I tear the door apart: should I be looking for a bad connection, or is this the sign of a failing amp at this speaker location? Original OEM Bose stereo system.

 

ND1980LS

The problem is the amp.

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'90 Granada Black Pearl LS Coupe, 298K miles
'89 Geneva Green Pearl LS Coupe, 142K miles

My 1989 & 1990 Legend LS Coupes

digger89L

..and the solution is ....?

samblaze

If you're not familiar with opening up and re-soldering amp interior connections then solution is amp replacement.

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86 Saab 900S Coupe 5MT
94 Acura Legend GS 6MT
04 Subaru Forester XS A/T

paulo57509

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'87 L-Coupe 5-Speed
Stock; NO Mods
389K Miles - original engine and drivetrain.

samblaze

Oh yea I guess outsourcing the repair would be an option too , wasn't thinking straight. These guys are pretty good with Legend stereo work too, they 89-90 for G1's:

Factory Car Audio Repair For All Makes and Models - Acura Car Stereo Removal and Installation - BOSE Car Stereo, Speaker / Amp Repair

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86 Saab 900S Coupe 5MT
94 Acura Legend GS 6MT
04 Subaru Forester XS A/T

ND1980LS

Send the speaker(s) to Bose in Framingham MA and have them rebuilt to
" As New " condition.....new amps and cones. I did on all the speakers on BOTH my Coupes. If you need the contact info....IM me.

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'90 Granada Black Pearl LS Coupe, 298K miles
'89 Geneva Green Pearl LS Coupe, 142K miles

My 1989 & 1990 Legend LS Coupes

digger89L

...so, what's the "usual" cost of having these speaker amps rebuilt? FCSR says about $80 per amp ...Willman's Electronics says $75 per speaker, $250 for all four. What does BOSE charge?

ND1980LS

Around the same.

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'90 Granada Black Pearl LS Coupe, 298K miles
'89 Geneva Green Pearl LS Coupe, 142K miles

My 1989 & 1990 Legend LS Coupes

digger89L

I'm an inquisitive, innovative (not to mention frugal) kind of guy: has anyone on the forum tackled this job himself? $250 to $300 sounds awful close to set of summer tires ...if you know what I mean! Here's a note off another forum: "You have the classic problem of the Bose amplified speakers. The capacitors on the amp boards are failing/leaking and when this happens the amps may not work at all or sometimes the amps will make a squealing/popping noise in the speakers. If you use a magnifier and take a close up look at the capacitors on the amp boards, I'm sure you will see several of them leaking the electrolytic onto the circuit boards. It's a little time consuming, however with some patience you should be able to replace all the capacitors on all the boards to make the speakers work like new again. Or, you can always purchase four new amp boards at about $85-$90 apiece."

Doesn't sound like rocket science to me (although, I'm no rocket scientist!) So, if we can resolder main relays, rad fan control units, instrument cluster circuit boards, etc., how difficult can it be to replace a few components on a speaker amp board?

bfarrell01

Has no one thought that the speaker wire could just be shorting? thats causes popping and such.

ND1980LS

Nope.

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'90 Granada Black Pearl LS Coupe, 298K miles
'89 Geneva Green Pearl LS Coupe, 142K miles

My 1989 & 1990 Legend LS Coupes

sam o nela

Dont know how similar this is...but its worth a look I think...

I'm stuck...Help please (Bose Amp Repair + pics) - Maxima Forums

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digger89L

Thanks Sam! That will be real helpful ...especially the component listing. Now that I know some of our fellow car nuts have the ingenuity and tenacity (and yes, frugality!!) to tackle this job without forking out $300 ...it gives me the incentive to try it myself. I'll report back when I have some positive (or negative) news.

Xcaliber003

+1 Great find!

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"Don't look at your car as it is now, see it the way it'll be when you're done fixin it up."