The Mercury MSUB10 is a selectable 70 Volt/4 Ohm subwoofer, features one custom 10-inch Subwoofer and one bass port. Dynamic 360° sound with full 180° dispersion, at 15 feet  high, the area coverage is approximately 3117 sq. ft. 300W maximum power at 4 ohms and 8-64W taps 70V transformer. MSUB10 is easy to install in high ceilings, come with two 20' Gripple Seismic Restraint Cables, and are available in black and white.