The HT-S9100THX is the first THX I/S Plus Certified system to handle full high-definition processing of 1080p video and the master quality of Dolby TrueHD and DTS-HD Master Audio. Whether gaming, movies, broadcasts, or music, the HT-S9100THX draws on a reservoir of precise amplification power to create a breathtaking home entertainment experience. With video upscaling, revolutionary audio equalization and acoustic treatment technologies, and integrated control with leading display brands, the HT-S9100THX is a fail-safe solution for most home environments. Magnetically Shielded SKM-960S/SKB-960 2-Way Acoustic Suspension Surround/Surround Back Speakers 5-1/8? (13cm) A-OMF Diaphragm Woofer 1 (2.5cm) Soft-Dome Tweeter 130-Watts Max Input SKW-960 Acoustic Suspension Powered Subwoofer Built-in 290-Watt Power Amplifier 12 (30cm) Cone Woofer Auto Standby/On Output Level Control Front Speaker Dimensions - Width 6-1/4 x Height 17-1/16 x Depth 7-13/16 (158x433x199mm) Center Speaker Dimensions - 17-1/16 x 6-1/4 x 7-13/16 (433x158x199mm) Surround and Surround Back Speaker Dimensions - 7-7/8 x 10-13/16 x 6-5/8 (200x275x169mm) Subwoofer Dimensions - 14 15/16? x 17 1/2? x 16 7/8? (380x444x429mm) Front and Center Speaker Weight - 11.7 pounds (5.3 kg) Surround and Surround Back Speaker Weight - 7.7 pounds (3.5 kg) Subwoofer Weight - 34.2 pounds (15.5 kg)