Velodyne MicroVee 6.5-Inch Powered Subwoofer (Black) 6.5-inch powered subwoofer 1 active aluminum cone 6.5-inch driver and 2 6.5-inch aluminum cone passive radiators for deep bass 64-ounce magnet structure enhances high output Patented high-output 1000-watt RMS energy recovery system amplifier reproduces heavy bass passages easily Black extruded aluminum cabinet dissipates heat