AudioSource AST 220S Satellite Speakers for Plasma & LCD TVs (Pair) (Discontinued by Manufacturer) Slim-design satellite speakers for use with flat-panel plasma and LCD TVs; compatible with CRT and projection sets, too Includes wall-mounting brackets 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 5.3 x 20.3 x 3.5 inches (W x H x D) each