The MTX TNE212D combines great subwoofer design with perfect enclosure design to deliver bass that far exceeds expectations. The unit is a dual 12 inch sealed enclosure that has a single terminal cup showing a final 2O load to any connected amplifier. The Terminator subwoofers used in the enclosure include durable polypropylene dust caps that can survive the rigors of most trunks and are lightweight, allowing them to efficiently move using less power. Each subwoofer can handle 200 watts RMS power, resulting in a power level of 400 watts RMS/800 watts peak for the entire enclosure. The subwoofers also incorporate Spider Plateau Venting, which is a mechanical cooling process that allows the subwoofer to continually refresh the air around the voice coil and dissipate heat. The enclosure itself is made of extra strength 5/8 inch MDF.