The Infinity Classia(TM) C255ES wall-mountable surround-effects speaker offers selectable monopole, bipole or dipole configurations for optimum surround configuration in any home theater system – with any film or music recording. Patented Infinity(R) Ceramic Metal Matrix Diaphragm (CMMD(R)) technology delivers accurate performance – with dramatically reduced distortion – for incredibly lifelike sound. In addition, the C255ES is capable of reproducing two discrete channels from one loudspeaker, making it perfect for upgrading to 7 channels using only five or six loudspeakers. The C255ES is also ideal for commercial or home applications where a single-point stereo loudspeaker is desired.