O
ofajen
Daddy-O Daddy-O Baby
jonnyc said:I'm not sure if the power ratings work like that, maybe they do. I don't know, can anyone confirm that a 15w amp is twice as loud as a 5w amp. Someone here a while back said the epi pushed 108db thru a single 12 cab.
Our ears respond to changes in sound intensity in an approximately logarithmic fashion. Doubling the power should roughly double the sound intensity, assuming roughly equivalent distortion levels. And doubling the sound intensity will roughly double the perceived loudnes, at least for medium to high volumes and middling frequencies. We can neglect the huge nonlinearities in human loudness contours at low volumes and low frequencies when we're talking about cranked guitar tones!

Otto