how to troubleshoot sub/amp combo

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=103750
Printed Date: May 14, 2025 at 4:19 AM

Topic: how to troubleshoot sub/amp combo

Posted By: chiwa
Subject: how to troubleshoot sub/amp combo
Date Posted: April 05, 2008 at 8:15 PM

HI Can someone point me in the right direction?

My Sub/amp combo was acting weird lately with it cutting in and out

After a while I wasn't able to get any power out of the amp so replaced it with a similar model.

After hooking everything up, the new amp is getting power, however when connected to the sub, there is no sound?

Anybody have any ideas on how I should begin troubleshooting?
Remote is good as well as the power going in

Replies:

Posted By: i am an idiot
Date Posted: April 05, 2008 at 8:39 PM

Have you checked the voltage at the power input terminals of the amp? With a volt meter? Have you used a meter or a battery to check the speaker?

Do you have a Gold AGU type fuse at your battery? If so replace it.

Posted By: chiwa
Date Posted: April 06, 2008 at 3:18 PM

I don't have ready access to a multimeter. The fuse appears fine also as another amp also shares the same power connection. How would I check a sub with a battery? Would I just use the stadar D Cell or is it a slightly different way?

Posted By: i am an idiot
Date Posted: April 06, 2008 at 4:22 PM

A standard D cell will work fine. Touch and hold the positive speaker wire to the positive terminal of the battery. Then touch the negative wire to the negative terminal of the battery. At this point your speaker should push outward. You will hear it also.

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