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Newbie question about multimeter

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=60837
Printed Date: May 11, 2025 at 1:39 AM

Topic: Newbie question about multimeter

Posted By: Tegpilot
Subject: Newbie question about multimeter
Date Posted: August 06, 2005 at 6:53 PM

Ok, Maybe something stupid i'm doing, but stevdart told me how to use the ohms law with voltage to calculate watts and set gain. My meter is ananlog but is multi and when I set it to 50volts scale and connect it to the sub speaker terminals and my needle jumps negative or backwards. I changed the polarity or *continuity* and same thing happened! According to the equation if I want to acheive 150 watts RMS at 4Ohms, I should be putting out 24.49 volts, nothing about negative? Help. Can this only be achieved with a digital meter? Thanks guys!

Replies:

Posted By: DYohn
Date Posted: August 06, 2005 at 7:45 PM

Should be set to AC volts to read an amplifier output.

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Posted By: Tegpilot
Date Posted: August 06, 2005 at 8:13 PM

thanks that was easy enough!!! I was freakin out! haha

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