Hey ppl

First, the car this is going in....
97 A4 1.8T with sport package and premium sound (though I dont think its
bose - no logos anywhere on the casette deck or speakers etc....) I believe
the rear speakers are amplified by some crappy Nokia amps sitting under the
speakers...

now on with the story...

alrite, after much trouble with a crappy install by professionals at a local
store, I got fed up and returned their POS back to them coz they were never
able to get it working properly.

So, I purchased an Alpine 9807 deck and I am going to install it myself...
I also bought the AUDI wiring harness consisting of 3 connectors - A (8
pin), B(8pin) and C (three rows, 20 pins) to plug directly into the factory
harnesses

So far, so good. Now the confusing bits... on connector B (which has all
speaker connections), I can see only 4 terminals - FRT RR and FRT LFT +
and -.

Now for the Rears, I see on block C1 (pins 1 to 6) pin 1 is line out RR LFT
(pin1) and RR RGT (pin 2) but just one Line out ground (pin 3)

The replacement deck which I purchased has both + and - outputs for all four
speakers...

I realize that I can't simply add those two -ve leads for the rr
together.... as the new unit outputs a "floating ground" signal...meaning
its not a constant ground

Now, whats the best way to do this? Should I just screw it and unplug the
factory amps and speakers and run new wires just to the speakers?

Howcome the frt speakers are not amplified?

thanks.... I realize that this post will prob result in 10,000 replies about
how I should do more research etc etc and its all been asked and answered
before...anyway I have been trying to find specific info but no luck other
than an audi world article which was a little confusing...all I am saying
is, if you can help, please be my guest...otherwise dont waste your time and
mine

thankss

 

many car radios nowadays employ this system where only the rears are
amplified, but this is usually where you use the line-out jack plugs to the
rears via an amplifier, if you are just using the radios built in amp (ie:
using all 4 wires for front and rear) then the output for all 4 speakers
will be the same.
amplifiing the rears only makes sence for the driver since you are much
further away from the rears (in most cars anyhow) and also this allows you
to add a subwoofer from an external amp in the rear of the car which isnt
affected by the front speakers. once its set up you can adjust the fader to
suit your ears etc.
unless you want to use your existing cars amplifier personally i would
rewire the speakers as you mention using (better quality) cables running
seperate wires to each 4 speakers.
the output from your new alpine wont really require an external amplifier
anyway.

"Ash Mann" <a2man#n@rogers.com#> wrote in message
news:mSgyb.92660$X2W1.14648@news04.bloor.is.net.ca ble.rogers.com...
> Hey ppl
>
> First, the car this is going in....
> 97 A4 1.8T with sport package and premium sound (though I dont think its
> bose - no logos anywhere on the casette deck or speakers etc....) I
believe
> the rear speakers are amplified by some crappy Nokia amps sitting under
the
> speakers...
>
> now on with the story...
>
> alrite, after much trouble with a crappy install by professionals at a
local
> store, I got fed up and returned their POS back to them coz they were
never
> able to get it working properly.
>
> So, I purchased an Alpine 9807 deck and I am going to install it myself...
> I also bought the AUDI wiring harness consisting of 3 connectors - A (8
> pin), B(8pin) and C (three rows, 20 pins) to plug directly into the
factory
> harnesses
>
> So far, so good. Now the confusing bits... on connector B (which has all
> speaker connections), I can see only 4 terminals - FRT RR and FRT LFT +
> and -.
>
> Now for the Rears, I see on block C1 (pins 1 to 6) pin 1 is line out RR
LFT
> (pin1) and RR RGT (pin 2) but just one Line out ground (pin 3)
>
> The replacement deck which I purchased has both + and - outputs for all
four
> speakers...
>
> I realize that I can't simply add those two -ve leads for the rr
> together.... as the new unit outputs a "floating ground" signal...meaning
> its not a constant ground
>
> Now, whats the best way to do this? Should I just screw it and unplug the
> factory amps and speakers and run new wires just to the speakers?
>
> Howcome the frt speakers are not amplified?
>
> thanks.... I realize that this post will prob result in 10,000 replies
about
> how I should do more research etc etc and its all been asked and answered
> before...anyway I have been trying to find specific info but no luck other
> than an audi world article which was a little confusing...all I am saying
> is, if you can help, please be my guest...otherwise dont waste your time
and
> mine
>
> thankss
>
>
>
>