I use 7.1 with Back Surround mounted in ceiling. Merry Christmas Outlaws!

Amp: Adcom GFA-7607
Pre-Pro: Outlaw 950
A/V Switching: Audio Authority 1154
DVD: Sony DVPNC665
CD: Yamaha DVD-C900
DirecTV: H20 600 HD Receiver
DVD-R: Panasonic DMR E85
Main Speakers: Klipsch KLF 10
Surround: Klipsch RS-3
Back Surround: Klipsch RCR 5
Center: Klipsch RC-3
Server: Sony Vaio PRV 680
Mitsubishi WD52631 HD TV
Sub: Outlaw LFM 1