In reply to:

I have the M22's and I think they produce good bass in stereo only mode (DVD-A in stereo with no bass management sounds incredible on my M22's). But when you add the sub, there really is not that much of a difference.



You must have some interesting room interactions. In our (Peter's) setup, there is a very large difference between M22s alone and M22s + sub. Not that the M22 doesn't peform admirably on it's own, but the sub adds a significant improvement to the low end.