The C-1 employs a 5.25-inch polypropylene woofer housed in an acoustically inert BMC frame and a 1-inch aluminum dome tweeter. Packing big sound with great bass extension (70Hz) in a small case, the C-1 is only 9.65 inches high by 5.75 inches wide by 7.5 inches deep. A terrific stand-alone music speaker for small rooms, the C-1 packs enough dynamic range for a surround system when used with the new NHT CS-10 subwoofer.