JL Audio CS112LG-TW3 Enclosed Subwoofer System w/Single 12TW3-D4 Subwoofer CS112LG-TW3 - JL Audio 12" 400W RMS 2-Ohm Enclosed Subwoofer System with Single 12TW3-D4 Subwoofer Power Handling: Peak: 800 watts | RMS: 400 watts Mica-filled injection molded polypropylene cone Rubber woofer surround Dimensions: 5-1/8"D x 6-5/8"D w/ grille x 23-3/4"W x 15-3/8"H