To tame first reflections from the back wall I used industrial Velcro to mount seven 1" and 2" thick panels in a "stacked stone" arrangement. The Acoustimac room treatment, along with room correction software in the AV receiver make this a GREAT sounding media room, done at a very low cost. Thanks Acoustimac!
Equipment: TV: 70" Vizio E-series, Paradigm speakers: Monitor 7 fronts, CC350 center, ADP370 surrounds, SVS PC-13 Plus subwoofer. Pioneer VSX 1130 AV receiver, JVC XL-MC334BK 200-CD Changer, Panasonic Blu-ray player, Wii game console, Apple TV, Monster HTS 3500 10-outlet power conditioner.