Power Acoustik Cw2-152 15" 2200W 2 Ohm Crypt Series Dual Subwoofer: * 2200W max * 2 ohm * Closed-cell polyurethane surround * Extended-excursion NBR surround * Back plate and T-yoke venting * Overcast-stitched cone assembly * 100 percent OFC 4-layer voice coil