Yamaha NS-M125 2-Way Bass-Reflex Bookshelf Speakers, Black (Pair) (Discontinued by Manufacturer) Pair of high-quality 2-way bass-reflex bookshelf surround speakers Dual 3.15-inch white polymer cone woofers and 1-inch balanced dome tweeter per speaker 70 Hz to 35 kHz frequency response; magnetically shielded to prevent video interference Slim profile matches flat-panel and plasma TVs; gold-plated binding posts 120 watts max input power (40 watts nominal); 4.1 by 13.4 by 5.2 inches (W x H x D)