BOSE Acoustimass 10 Series III -Silver - Speaker System Designed for amplifiers delivering 10 to 200 watts per channel (front) and 10 to 100 watts per channel (rear) Cubes measure - 6.25H x 3W x 4D (each) and AcoustiMass Module is 14H x 22W x 7.5D Color - Silver Speakers/Black Acoustimass module