AudioSource AST 220C Center-Channel Speaker for Plasma & LCD TVs (Single Speaker) (Discontinued by Manufacturer) Slim-design center-channel speaker for use with flat-panel plasma and LCD TVs; compatible with CRT and projection sets too Includes wall-mounting brackets as well as adhesive isolation feet for set-top positioning; removable wire-mesh grilles Dual 4.25-inch mid-bass drivers and a poly-treated silk-dome tweeter 90 to 20,000 Hz frequency response (+/- 2.5 dB) Measures 20.3 x 5.3 x 3.5 inches (W x H x D)