preamp voltage and gain range

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=92074
Printed Date: May 17, 2025 at 6:42 PM

Topic: preamp voltage and gain range

Posted By: cm26484
Subject: preamp voltage and gain range
Date Posted: March 24, 2007 at 4:00 PM

i have an Alpine CDA-9857 HU that has 2v pre-amp voltage, my amp is a kicker sx1250.1 with 2 12" CVX12-4 wired to 1-ohm. when i am setting up my gain range from within the amp, i have choices of 1,2,4,8,16. i set it to 2v seemed a little quiet, so i was changing settings around and tried the 1v setting and it was much louder with no audible distortion (75% HU volume 60hz tone @ 0db). what problems if any could happen by setting my amp's gain range to 1v when the HU pre-amp is 2v?

Replies:

Posted By: aznboi3644
Date Posted: March 24, 2007 at 4:35 PM

It is rated at 2volts...you should have the sub level on the head unit all the way up...volume up to max before distortion.

And use a DMM and this calculator to see what your output voltage should be for the power you want at whatever load

Voltage calculator

Print Page | Close Window