The SSM2005 Circle Surround 5-Channel Soundfield Generator produces a true 5-channel surround soundfield using only standard unencoded left/right stereo sources. Left front, right front, center, and differentiated left and right rear channels are generated providing a realistic ambiance effect with either 4 or 5 speaker configurations. Unlike previous designs, Circle Surround is optimized for music reproduction with full bandwidth on all channels and proper separation of the front channels. The differentiated rear channels provide excellent imaging, especially in automotive applications. Listener position is not critical; wellbalanced sound is obtained anywhere within the soundfield.