Bose 301-V Stereo Loudspeakers (Pair, Black) Horizontal design fits easily on bookshelves. Spatial Dispersion speaker lens creates a smoother high frequency spatial response and wider distribution of sound Exceptional performance as front left and right speakers in a home theater (best matched with BOSE VCS-10 Center Channel and BOSE 161 Surround Speakers) Bass reflex design for high impact. Each speaker (H x W x D): 9.75 x 14.25 x 9.75 inches Works with sources of 10-150 watts with receivers from 4 to 8 ohms. Removeable grill. Long-excursion woofer 8 Inch delivers clean, powerful low frequencies and balanced sound throughout your room Automatic protection circuitry prevents drivers from being overdriven and provides increased reliability while minimizing interference with the listening experience