Bazooka BTA6100 BT Series 6-Inch 100-Watt Amplified Tube Subwoofer 6-1/2" Woofer With Treated Foam Surround power Output 100 Watts Max85 Hz Low-Pass Filter (18 Db/Octave) Line- And Speaker-Level Inputs frequency Response 39-85 Hz subsonic Filter (12 Db/Octave At 35 Hz) For Improved Amp Efficiency Sensitivity 103 Db18-3/8"L X 6-7/8"W X 8-3/16"H2-Ohm Impedance 6-inch bass tube with on-board 100-watt, 2-channel amplifier 6-inch dual voice coil subwoofer Patented tube enclosure design is optimized for "corner loading," for maximum bass performance Includes straps for secure mounting One-year limited warranty