Klipsch RB-51 II (Pr) 2-Way Bookshelf Speakers,Black,Dimensions: 11.4" H x 6.5" W x 10.75" D Fills medium-sized rooms with dynamic sound reproduction Highly efficient design produces more output using less energy Accurate, non-fatiguing sound Plays louder with less distortion than the competition Enhanced 1" titanium Linear Travel Suspension horn-loaded tweeter 5.25" high-output Cerametallic woofer