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rca voltage

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=112930
Printed Date: May 14, 2025 at 1:03 AM


Topic: rca voltage

Posted By: j_maxwell789
Subject: rca voltage
Date Posted: April 05, 2009 at 7:47 PM

Hi,

Basically I have a factory intstalled Amp that currently gets 2v from the factory Head Unit. I want to replace the Factory head unit with a JVC Head Unit with 5v RCA preouts, but I have to keep the existing amp.

My question is: Does the voltage of the preouts change with the volume the Head Unit is set to? Eg If I keep the volume low on the head unit, would the RCA voltage be less then the specs of 5v?

Any help would be great.

Cheers



Replies:

Posted By: i am an idiot
Date Posted: April 05, 2009 at 8:39 PM
With the volume turned all the way down, there is 0 volts coming out of the RCA jacks of the radio.  As you turn the volume up the voltage increases.  You can connect the 5 volt radio to the 2 volt amplifier.  However if someone were to turn the volume of the new radio all the way up, it could get kind of loud.




Posted By: j_maxwell789
Date Posted: April 05, 2009 at 11:30 PM
Ok thanks. Sounds like from what you said it should work as long as I keep the volume down on the head unit





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