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RE: Watts vs speaker ohms..

Posted by BigguyinATL (M) on May 19, 2016 at 15:31:37

In Reply to: RE: Watts vs speaker ohms.. posted by John Elison on May 18, 2016 at 21:52:57:

Or convert everything to dB.
Amplifier Power output: 10xLOG(80)= 19dBW
But it is the peak power that is important. +3dB = 22dBW
Speaker Sensitivitry at one meter +87dB = 109dB peak levels.
adjustment for normal listening distance - 6dB = 103dB peak level
Add second loudspeaker +6dB correlated (Mono) = 109dB peak level
Adjust for room acoustics +3 for live, -3dB for dead ~0 109dB peak
Adjust for program loudness (Crest factor) -10 (MP3rock downloads) to -25 (Classical wide Dynamic range) average -15dB = 94dB average level capability. Which is pretty loud. Average amplified concert levels 5 second running average maximums at about 95-105dBC (and that's why I wear ear plugs to concerts or go to small jazz clubs.


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