Acoustech HT-75 High-Efficiency Horn-Loaded 2-Way Tower Speakers, High-Gloss Black (Pair) Pair of 2-way floorstanding tower speakers for use with stereo or surround sound systems Dual 6.5-inch graphite-injected cone woofers and 6.5-inch horn tweeter system per speaker 35 Hz to 20 kHz frequency response; 96 dB sensitivity and 8-ohm impedance Recommended power handling of 10 to 150 watts; high-gloss black finish Each speaker measures 9 by 40 by 8 inches (W x H x D); 2-year warranty