Sony SS-CN550H Center-Channel Speaker (Single Speaker) (Discontinued by Manufacturer) 2-way, bass-reflex center-channel speaker with 150-watt maximum power handling, 8-ohm speaker impedance Dual 5.25-inch HOP (high strength, low weight, and low resonance) drivers and a 1-inch tweeter Nano-Fine balanced-dome tweeter rated to 50 kHz Includes speaker cable and adhesive rubber feet Measures 17 x 6.6 x 8.4 inches (W x H x D)