Klipsch GMX-D5.1 Multimedia Computer Speaker Surround Sound System - Discover the excitement of surround sound through your computer with this outstanding, revolutionary speaker system that delivers an exciting new dimension to PC audio performance. 108dB SPL (Sound Pressure Level) Five identical two-way elipsoid horn-loaded satellites for minimized distortion and enhanced spatial imaging . 75 inch metalized polymer MicroTractrix horn-loaded tweeters, 3-inch metalized fiber-composite mid-bass drivers with dispersion-enhancing fixed bullet caps in each satellite 6.5 inch long-throw powered subwoofer in rear-duct ported order alignment for extended, low-distortion bass response Digital decoder/preamplifier Direct path interface; discrete design keeps digital circuitry isolated from amplifier, insuring seperation quality performance Exclusive SWS link for customized subwoofer system upgrades 5.1 Channel Surround sound card required for computer use (not included) Features Delivers home-theater sound from your game console 5.1 surround sound supports Dolby Digital, Dolby Pro Logic II and five-channel stereo Satellite speakers feature 0.75-inch metalized polymer tweeter and 3-inch metalized fiber-composite midbass woofer 100-watt, 6.5" fiber-composite cone subwoofer Satellites have self-supporting ball-joint pedestals with 45-degree range of motion