@sirquack

Thanks! We moved in quite recently and worked hard at decorating the room on a budget. Thank you IKEA!

I do have the speakers set to small with a 80hz crossover freq. I tried various other settings (M3s at 60hz, VP100 at 95hz, etc) but in the end the best curve (to my ears) was attained with 80hz all-around.

I did run the Audyssey Mult EQ quite a few times with up to 6 locations. It does sound better with it on, although I'm not convinced of the preciseness of that feature since it doesn't give the same results consistently when I run it multiple times. It adjusts levels and distance/delay perfectly but the crossover values are different every time (20% of the time it tells me my M3 are full range, the rest of the time it varies from a recommended crossover of 40hz up to 100hz).

I'll try throwing a thick blanket over the floor as was suggested... if that'd do the trick, it would be quite an inexpensive fix \:\)