Yamaha NS-333 2-Way Bass Reflex Bookshelf Speakers (Pair) 5-inch PMD cone woofer and 1-inch aluminum dome tweeter in each speaker Waveguide horns reduce reflected sound while directing more sound waves to your ears 60 watts nominal power; 150 watts music power Monster Cable internal wiring ensures clean, clear signal Each speaker measures 7-7/8 by 12-5/8 by 8-3/8 inches (width by height by depth)