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troubleshooting subs

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=113217
Printed Date: May 13, 2025 at 4:14 AM


Topic: troubleshooting subs

Posted By: stangman_dan
Subject: troubleshooting subs
Date Posted: April 17, 2009 at 7:22 AM

Here is what is happening.  When I connect both of my subs I lose almost all volume from them.  My front speakers stay running fine.  The speakers are moving but they are so quiet I can hardly hear them.  If i run 1 sub it sounds great.  It started raining last night so i didn't get a chance to run the them both solo to see if maybe the 1 I have disconnected is bad.  Assuming I hook up the second sub solo and it sounds fine what else should I look into?

Setup:

Pioneer HU
P450.4 Amp in 4 channel
JL Audio 650-Csi running off the front channel at 4 ohms per
Alpine 6x8s running off the rear channel of head unit
8W3V2-D4 running off of the rear channel at 2 ohms per




Replies:

Posted By: boogeyman
Date Posted: April 17, 2009 at 7:39 AM
 one of your subs is wired out of phase.............swap the wires of one sub either at the amp or the sub



Posted By: stangman_dan
Date Posted: April 17, 2009 at 7:45 AM

well that would be a nice easy fix.  I will give that a shot.  I will let you know if that fixes it.  thanks for the quick reply.


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