Geek, I believe that you are quoting an anechoic measurement for the sensitivity of the Maggie. But, as a dipole, the back wave will put out an approximately equal loudness to the front wave, so in room, without room gain, the speaker will be approximately 3db louder.
I’ll go out on a limb here and guess that the OP listens in stereo, (rather sad IMHO, but that’s for another time) so, with two speakers in room that’s another 3db. Add to that the room gain in the lower frequencies, and a 200 watt amp, with a low output impedance and decent current delivery is more than enough and should be able to produce levels in an average room that would be deafening, even subtracting for the increase in distance from 1m listening distance to 8 feet, line sources only diminishing by 3db per doubling of distance.
I’ll go out on a limb here and guess that the OP listens in stereo, (rather sad IMHO, but that’s for another time) so, with two speakers in room that’s another 3db. Add to that the room gain in the lower frequencies, and a 200 watt amp, with a low output impedance and decent current delivery is more than enough and should be able to produce levels in an average room that would be deafening, even subtracting for the increase in distance from 1m listening distance to 8 feet, line sources only diminishing by 3db per doubling of distance.