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How do you work out the wattage of an amp? Answered

I made the Ruby amp by runoffgroove (http://www.runoffgroove.com/ruby.html) and it's hooked up to a pc speaker with an 8ohm impedance, how would I go about finding the output wattage?

And while you're at it if you have any amp-building knowledge to impart or good places to learn about amp circuits I'd appreciate it.

Discussions

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rickharris
rickharris

5 years ago

As you can tell from the answers below this isn't a cut and dried situation. There are different ways to measure or calculate the output power so=uch as RMS power or Music power

http://en.wikipedia.org/wiki/Audio_power

I reality the only way to be sure is to measure it external to the speakers.

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Jack A Lopez
Jack A Lopez

5 years ago

I dunno. How about P = V^2/Z? Where V is RMS voltage across the speaker, and Z = 8 ohms, is its impedance.

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iceng
iceng

5 years ago

When you burst a 10 watt speaker cone your amp output is 11 watts !

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-max-
-max-

5 years ago

You can always do some load testing