JBL S312 II 3-Way Floorstanding Speaker with 12" Woofer (Black Maple) (Discontinued by Manufacturer) Designed for use with amplifiers driving up to 250 watts per channel (maximum); offers high 92 dB sensitivity Uses a 1-inch pure-titanium dome tweeter with EOS waveguide, a 4-inch PolyPlas midrange cone, and a 12-inch PolyPlas bass driver 35 to 20,000 Hz frequency response Sold as a single speaker; buy 2 for stereo or 5 for a complete, full-range surround speaker system Measures 14.75 x 41 x 12.25 inches (W x H x D)