Powered Subwoofer: Powerful 5000W peak with low-frequency driver for sound and bass reinforcement. It has 1000 Watts RMS/ 5000 Watts Peak; dual 18 inch woofer with 80oz magnet and 3" voice coil. Electronic crossover from 35Hz to 120Hz, XLR high pass output from 120Hz to 20KHz. XLR Input and Output: The system has XLR input and output jacks, which can easily for connecting signals from mixers or other amplifiers. It also has phase selection button that can select phase from normal to 180° to run multiple subwoofers. Powerful Subwoofer with Side Handle Design: Built-in CLass-D amplifier and has 2 woofers, which can ensure deep and thrilling stereo sound. Two side handles make it easy to transport and carry. Item weight: 159.2lbs; Item dimension:27” x27.3” x49.2”               Better Material to Reduce the Resonance: Super solid housing is made of plywood, which reduces the resonance generated by sound compared to plastic speaker, resulting in better sound quality and achieve distortion-free and accurate response.  Wild Range of Usage: The SP-218X can transport easily, which is sutiable for parties, DJ gigs, weddings, meetings, speeches, churches, gymnastics, conferences, home theaters, etc.