Re: Need help with stereo installation in 86 5kcst

[Gisli Ottarsson <gisli@master.adams.com>]

This thread got me thinking that it might be nice to have a CD in my
car.  To better understand the configuration I have I took a look at
my Bentley manual but all I could find was the System Layout for a
1984 5000S on page 91.109.  Should this also cover other models, e.g.,
my '87 5kcstq?  Surely my car has numerous speakers not drawn on this
figure.  The rear amp you refer to, is that the Duo Sound unit or is
there another amp that is not depicted in this figure?  Please
elaborate? 

What is the power rating of the standard radio/cassette?  What is the
rating of the rear amp?  Do you believe that your rear amp, had it
been functional, would have given you superiour sound than the Blau
Denver?  When you say 135 watts, how is that figured?  Don't tell me
that this is the per channel power output.

Thanks for the Crutchfield link and any additional info.

Gisli


>>>>> On Sun, 08 Aug 1999 15:54:09 -0400, Mark Connors said:
 
  MC> I recently updated my stereo on my '87 5KTQ.  My stereo problem
  MC> was the same as yours. With the OEM Blaupunkt Unit installed the
  MC> back speakers would not work.  I figured it was time to update
  MC> my stereo so I bought a new Blau Denver CD (135 Watts) player as
  MC> a replacement.  When I installed my new Blau unit connecting the
  MC> back speakers resulted in no audio!  Not even the "audible beep"
  MC> could be heard when pressing the various buttons on the steero
  MC> face.  To make a long story short it turns out there was some
  MC> type of short in the rear amplifier that was shunting the stereo
  MC> signal out.  I recall several posts on the list recently
  MC> regarding bad rear amplifiers and the possibility of FIRE!  As a
  MC> quick fix, I abandoned the existing rear wiring and amplifier
  MC> (unplugged the amp) and ran new wire from the instrument
  MC> cluster.  I found, at least in my case, that my new stereo was
  MC> powerful enough to drive my system without the rear amp.  BTW,
  MC> if you don't want to hack up your car's existing wiring in the
  MC> instrument cluster; Crutchfield (www.crutchfield.com) is an
  MC> excellent source for adapters to adapt your existing speakers
  MC> plugs to your new stereo.  I bought an antenna adapter and
  MC> speaker plug adapters from Cruthfield.  They both worked great
  MC> and made for a custom installation!  Good Luck with the project.

  MC> Regards
  MC> Mark

  MC> Rokas Reipa wrote:

  >> Finally decided to pull out the original Blaupunkt head unit from
  >> my 86 5kcst and replace it with an Alpine CD head unit(with 35w x
  >> 4 channels).  Front speakers work ok, however when I connect the
  >> rear speakers, all is lost. No music comes out of any
  >> speakers. The car has the 10 speaker system with the amplified
  >> rear speakers. Does the rear amp need to be bypassed somehow?
  >> Please help. TIA
  >> 
  >> Rokas
  >> 86 5kcst