jmone, of course there are limitations of maximum sound pressure level, but if you get five of the M0's running in an average size room--say, 2,100 cu ft or so--and you have the subwoofer to handle the bass duties up to 150 Hz, the M0s will present a remarkably satisfying surround experience. No, they won't play at extreme levels like the M60s, M80s or as loud as the M22s, but I think you'd be surprised.
When I did the double-blind tests of these, they were running in stereo (not 5.1) and they still pumped out satisfying levels.
Alan
