Bazooka BT8024DVC BT Series 8-Inch 4-Ohm Dual Passive Tube 400w Max Dual 4ohm Voice-coil Subwoofer Includes Mounting Straps Passive Bass Tubes enclosure with dual voice coil 8-inch subwoofer Corner-loading optimization provides maximum bass performance 400 watts maximum power handling with dual four-ohm impedance High-efficiency woofer designed and reinforced for use in Bass Tubes Includes straps for secure mounting