bmw factory head unit output?

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=4752
Printed Date: July 22, 2025 at 12:20 AM

Topic: bmw factory head unit output?

Posted By: wado
Subject: bmw factory head unit output?
Date Posted: October 23, 2002 at 3:00 PM

can someone tell me if the factory head unit from a 1991 BMW M5 requires a hi-low converter to connect to an a/d/s amp? What is the output 4V nominal?

I would prefer to avoid using a hi-low converter and just run the speaker outputs from the head unit and convert to rca inputs for the amp without altering the signal.

Is 4 or 5V ok for the a/d/s amp?

thanks kindly.

Replies:

Posted By: crraig wilson
Date Posted: October 24, 2002 at 10:39 PM

yes it would take some sort of converter ,in fact that car has a factory multi channel amp in the left rear of the trunk, you would be much better off sound quality wise.replacing the head unit also ...............................4-5volts for the input of that amp depends on the input gain range of that amp.most amps i sell i would say 4 to 5 volts is fine.sorry dont sell ADS..hope this helps

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craig wilson

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