This bundle includes a MTX S6512-44 S65-Series Square 12" 500W RMS Dual 4-Ohm Subwoofer, MTX JH10001 Jackhammer Series 1100W x 1 @ 1-Ohm Class D Mono Block Amplifier, and MTX BS112V-SQ Bass Slammer 12" Subwoofer Enclosure. The S6512-44 subwoofer features a patented surround geometry for higher SPL and volume displacement, spider plateau venting for effective heat dissipation, and a radial ribbed T-yoke for lower distortion. The JH10001 amplifier offers easy access controls, high-quality power and speaker connections, and variable subsonic filter and crossovers. The BS112V-SQ enclosure is made with high-density wood and dark gray aviation-grade carpeting, and specifically designed for the Kicker L5 or L7 Series and the Thunder Square Subwoofers. Dimensions: 15-1/4"H x 20-1/4"W x 15-1/4"D. Made in the USA. 1-year warranty.