The short answer is that if you give yourself 12 db of headroom and subtract 5 for room gain and then calculate the power you need in average sized rooms when listeneing at around 10-12 feet, you need a lot less power than you would think
Really? Let's try it!
I took my SPL meter to a National Symphony Orchestra concert last week. During the crescendos of "Also Sprach Zarathrustra" (aka the 2001 theme) the meter peaked around 90dB (we were in the cheap seats). So we'll use that.
So 90dB + 12dB for headroom
At home, the primary seating is ~3-Meters from the speakers.
The M22's have 93bd Sensitivity. Plugging all that into the calculator:
Listener Distance: 3m
Desired Level at Distance: 90db
Sensitivity: 93
Headroom: 7db (12db -5bd? for room gain and I'll have to google what that is)
I need, wait for it.... 23 Watts.
Umm, err, 23? Wait, why in the hell were we talking about amps in the first place?
