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How do you connect an aftermarket radio with stock ampilifed rear speakers?

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Old 05-01-2003, 11:39 AM
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Default How do you connect an aftermarket radio with stock ampilifed rear speakers?

<center><img src="http://pictureposter.audiworld.com/50468/concertdiagram.jpg"></center><p>
I have a 98.5 A4 that came with the Concert radio and amplified rear speakers. I'm using an Alpine headunit. I hooked up the front with no problems, but I'm not too sure how to hook up the rears with the built in amp?

Also, I'm getting no reception from the radio.

Any help would be great...
Old 05-01-2003, 01:41 PM
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Default You need to send them . . .

1. signal (right rear &amp; left rear)
2. remote amplifier turn-on (to the left of "COM")
3. ground wire ("COM")

How you do this depends on how you hooked up your aftermarket receiver.
Old 05-01-2003, 03:58 PM
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Default For the signal...

can I use the aftermarket receiver rear speaker wires output? Meaning, connecting the same way as I did for the fronts speaker by using the receiver front speaker wires.

Or do I have to buy a RCA line output converter?
Old 05-01-2003, 08:35 PM
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Default No, you don't want to do that. Does your new receiver have

preamp outputs (aka, low-level outs)?
Old 05-02-2003, 10:33 AM
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Default I have...

RCA outputs and speaker wires outputs. That's where I think I have to purchase a RCA line out converter.

Ed
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