@willemj
I based those numbers on what I'm sitting here dealing with in my condo. 90dB/V/M speakers about 12 feet away with usual boundary and coupling factors. I picked 4 ohm instead of the nominal 8 ohm rating Focal claims just for fun and it probably is more realistic. The F5 transitions out of class A into 4 ohm at 31 watts and easily carries the 24.5V and 6.1 amp to make for 150 watt transients. Looking around here, 12 feet seems a fairly average distance and 90dB sensitivity is pretty average sensitivity.
I based those numbers on what I'm sitting here dealing with in my condo. 90dB/V/M speakers about 12 feet away with usual boundary and coupling factors. I picked 4 ohm instead of the nominal 8 ohm rating Focal claims just for fun and it probably is more realistic. The F5 transitions out of class A into 4 ohm at 31 watts and easily carries the 24.5V and 6.1 amp to make for 150 watt transients. Looking around here, 12 feet seems a fairly average distance and 90dB sensitivity is pretty average sensitivity.