Bose VCS-10 Center Channel - Speaker, home theater sound for component systems - Silver (Discontinued by Manufacturer) Compound loaded drivers optimize low frequency output for rich, cinema-like dialogue from a small enclosure Two flared ports help reproduce bass with no audible distortion Compatible with surround sound receivers rated from 10 to 100 watts Rated 4 to 8 ohms Electronic protection circuitry prevents the speaker from being over-driven, offering increased reliability