You want some sound to bounce back. Trust me. You don't want to be in an anechoic chamber when you're listening to music. Serenity_Now fixed me up real good and my 10 X 10 X 8, 2.1-channel room now sounds better than my 4800 cubic foot theatre room (at least for music). At a fraction of the cost to boot smile.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated