2v/4v preouts

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=63810
Printed Date: May 13, 2025 at 6:29 PM

Topic: 2v/4v preouts

Posted By: choover567
Subject: 2v/4v preouts
Date Posted: October 04, 2005 at 8:31 PM

whats the difference between 2v and 4v preouts, went from a deck with 3 preouts (2v) and mine right now is 3 preouts (4v)... whats the diff?

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Chris - 97 Toyota 4Runner
Alpine CDA-9884
Kicker SX1250.1
Kicker 15" L7

Replies:

Posted By: SoundAudio
Date Posted: October 04, 2005 at 8:49 PM

the higher voltage output is better. Your amplifier can only increase the input signal a certain amount. If the signal is higher to begin with it can be amplified more and cleaner. So what does the change mean to you? Going from a 2v out to a 4v out means you need to reset the gains on your amplifier. The gain matches your amplifier to the input signal. Your gain can be set lower with the 4v input so your amplifier runs cooler and produces a cleaner sound. Hope this helped you out.

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Good Luck!
-Thad

Posted By: DYohn
Date Posted: October 04, 2005 at 9:00 PM

choover567 wrote:

whats the difference between 2v and 4v preouts,

2 volts. (sorry, couldn't resist.)

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