How do I make my HU use PreAmp outs?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=18630
Printed Date: July 05, 2025 at 5:01 PM

Topic: How do I make my HU use PreAmp outs?

Posted By: clake
Subject: How do I make my HU use PreAmp outs?
Date Posted: September 07, 2003 at 8:22 PM

I have a Kenwood KDCX759 deck, and I'm having trouble using the RCA PreAmp Outputs for the front channel. The deck has speaker-level outputs running from the deck to all four channels. I just put in a new amplifier and ran RCA cables to the deck. The problem is that the deck doesn't seem to realize that I want to use the PreAmp Outs instead of the speaker-level Outs. Even with the new amp & speakers installed, they get no signal. Yet the original front speakers (still in the car) work just as they did before.

So how do I set my deck to use the PreAmp Outs instead of the speaker-level Outs?

Thanks for the help!! -Chris

Replies:

Posted By: auex
Date Posted: September 07, 2003 at 8:29 PM

A radios pre-outs should work all the time, with exception to some sub outputs. Your problem sounds like it is in your amp/wiring rather then your deck.

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: aggie altima
Date Posted: September 08, 2003 at 2:35 AM

I'm not sure if this is any help since you have a Kenwood, but with my Pioneer deck, I had to turn on the rear pre-outs to full range by using the menus. It has two options for the rear pre-outs, full range or subwoofer.

Did you try disconnecting the stock speakers?