[V8] Speak up, Mr. Bose

[MORRALEE David]

If you are having screeching, no high volume , popping ... this is a
direct result of the caps being gone/internally damage/broken etc .
Sometimes there is no visible damage to the caps. I've rebuilt five amp
boards and only seen one with physical damage .



superdave   

-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
Of Grant Lenahan
Sent: Friday, June 29, 2007 1:46 PM
To: Christopher G. Mason
Cc: v8 at audifans.com; quattro at audifans.com
Subject: Re: [V8] Speak up, Mr. Bose

If that is true, you also might take them out and look for a cap
(typically a cylinder, standing up) oozing a bit of goo or looking
bloated.  Remove, procure similar, replace.

Yes, BOSE are car specific. The whole point of BOSE technology is to
pre-equalize for the ambient environment.

Grant
On Jun 29, 2007, at 1:44 PM, Christopher G. Mason wrote:

> Its the amps, I had similar noises before they failed completely on my

> old 1990 Maxima. If they are like any other early BOSE system, the amp

> is likely mounted on the speakers. I removed the speaker unit and had 
> a local stereo shop that was a BOSE authorized repair center rebuild 
> the amp for about $75 back in 2000. Do not buy a replacement amp off 
> of ebay, they are apparently equalized according to the car and 
> speaker position it is installed in and they won't sound right. Yes, 
> the point of failure is indeed the caps, BOSE got a bad batch during 
> the early 90s and it affected all of their OEM systems regardless of 
> the make or model of car. I think they eventually corrected the 
> problem by 93-94 or so.
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
> ---
> Watch this space for ads :)

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