Well folks, I just measured my space downstairs and I mis-spoke earlier. The room is actually 19'x19'x8' at the smallest (could go 20'x19'x9' - but I would like to sound proof it a little bit). So, having said that, are the M22's too small for the fronts and center? The HT wizard on this site recommends M60's at the very least. I may have to reconsider my design. I do want plenty of low end power, so the Ep600 or even Ep800 I will now look at again.