Who has a voltage draw calculator

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Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81629
Printed Date: May 13, 2025 at 6:45 PM

Topic: Who has a voltage draw calculator

Posted By: Ravendarat
Subject: Who has a voltage draw calculator
Date Posted: August 14, 2006 at 9:09 PM

I need to figure out how much current is being drawn by an amp. The numbers I need to run are 67% efficency, 200w, 2 ohm and 14.4 volts. Anyone :)

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Replies:

Posted By: haemphyst
Date Posted: August 14, 2006 at 11:29 PM

200/.67=300/14.4=21A

200 watts out, divided by efficiency equals input power.
Input power, divided by voltage equals current required.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Posted By: Ravendarat
Date Posted: August 15, 2006 at 12:13 AM

Thank you, Im gonna lock that little formula away

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

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