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checking polarity

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=36745
Printed Date: May 16, 2025 at 6:53 PM


Topic: checking polarity

Posted By: dirtylooks
Subject: checking polarity
Date Posted: August 03, 2004 at 10:24 PM

I wont to know if there is a tool that will check speaker wire that would tell u if   - or +...or  how would i check it ??? any info is welcomed



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A way of life..



Replies:

Posted By: boomer_106
Date Posted: August 03, 2004 at 10:30 PM
If you can see the speaker take a C or D size battery and take the wires coming from the speaker and hold one on top of the battery and one on bottom. If the speaker moves out away from the magnet you have the correct polarity. If it sucks in then you have the polarity reversed. The battery is marked + and -   on it if you look closely.



Posted By: Charles_R_H
Date Posted: August 04, 2004 at 11:12 AM

there are phase detectors out there if you want to spend $75 ++

or use a battery like boomer says



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ELECTRONICS RUN OFF OF SMOKE, WHEN YOU LET THE SMOKE OUT THEY STOP WORKING



Posted By: Tcole
Date Posted: August 04, 2004 at 1:42 PM
Cone moves outwards= positive lead to positive battery terminal, negative lead to negative terminal.

Cone moves inwards= positive lead to negative battery terminal, negative lead to positive battery terminal.


Hope that helps


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