Product Introduction: High Power 2000 Watts 18" Pro Audio Speaker Model No.: 18SW125-201 This superior quality 18 inch subwoofer uses 280×25mm ferrite magnet & 4 inch voice coil, combined with carbon fiber cone and thick T yoke & washer. The rated power is around 2000 watts, and the maximum power can reach 4000 watts. High quality carbon fiber cone & dust cap not only make it look nicer, but also produce perfect sound. If you have requirement for superior quality sound, this high-end professional 18 inch subwoofer Speaker is a good choice you cannot miss. General Specifications: Magnet Size: 280 ×25 H Sensitivity: 94 dB