what is Dynamic Power vs. RMS?

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=45256
Printed Date: May 12, 2025 at 5:22 AM

Topic: what is Dynamic Power vs. RMS?

Posted By: rt2party
Subject: what is Dynamic Power vs. RMS?
Date Posted: December 15, 2004 at 7:41 AM

i am looking at amplifiers on ebay and this amp says it has Dynamic Power 14.4 VDC - 4 Ohm Load 70 w x 4 but an RMS of only 45w x 4 @ 12.5 VDC is th other # just to confuse me? the amp in question is an MTX Thunder 564. thanks ~Ryan

Replies:

Posted By: stevdart
Date Posted: December 15, 2004 at 7:51 AM

You should have about 14 volts with the car being driven, alternator humming. But just 12.5 volts with the car turned off. The rating you read is a way to compare different equipment ratings on a level playing field.

Posted By: rt2party
Date Posted: December 15, 2004 at 9:16 AM

thanks!

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