The CS50 is a full-range, passive screen channel cinema loudspeaker for small auditoriums. The high frequency section features a high performance PRD500 planar ribbon transducer designed and manufactured by SLS Audio. The unique design and properties of the planar ribbon driver delivers fast transient accuracy, as well as an exceptionally smooth high frequency response. Also the unique properties of the planar ribbon driver delivers more direct sound to the audience, even considering the effect of screen spreading. With a low frequency section that utilizes a 12” woofer, the front ported enclosure has a bass extension down to 40Hz and is well suited for small theaters with 50-75 seats.