My room was terrible for music. 18w x40L x14H. I have since installed 36 4" plus 2x4 bass traps.
Equipment:
Anthem D2 processor with ARC room correction
Anthem P5 power amp
oppO 970 dvd player
Yamaha C950 dvd player
Escient MX 311 server
Sony 777ES 400 disc dvd player
sony PS3 blu-ray player
Pioneer 150 60"plasma
4 Salk HT3
1Salk HTC
2 SVS PB12/2 subwoofers
1 Zektor MAS 7.1 Audio switcher for analog
Apple Mac Mini for the D2 Arc programing
JVC QL-A7, JVC QL-7, JVC QL-5,Demon Dk55, Kenwood KD-500 with Black widow arm,Cambridge 640 phono pre, and a Project SEII phono amp. Harmony 880 controls it all.