[AMRadio] Ranger Audio... the numbers

Jack Schmidling jack at schmidling.com
Fri Nov 17 18:49:40 EST 2006

Larry Taft wrote:

> Just from "rule of thumb" for audio tube amps you should get a couple 
> hundred volts audio swing (not related to BIRD WATTS) at each plate to 
> ground.  50 v is only a couple of watts audio.

Could you explain the math on that?  How do you arrive at watts knowing 
only volts?

As a data point, 50v into a 50 ohm load is 50Watts


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