amp current consumption: fixed or variabl

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=105696
Printed Date: May 13, 2025 at 8:06 PM

Topic: amp current consumption: fixed or variabl

Posted By: tcwave
Subject: amp current consumption: fixed or variabl
Date Posted: June 25, 2008 at 9:20 PM

Hi Guys,

Does an amp always draw the same amount of current or does it vary depending on how loud the volume is turned up?

The reason I ask is that I am running two amps off two marine deepcycle batteries off a single altenator on an outboard engine. The engine spec says the altentor makes 45A, while one of my amps says it draws 25A, while the other doesn't say, but it it a 300w amp so I am assuming its draws around 20A.

Thanks,

Replies:

Posted By: i am an idiot
Date Posted: June 25, 2008 at 9:27 PM

With the volume all the way down, each of your amps should pull less than a half of an amp. The louder you play it, the more current they pull.

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