Product Introduction: High Power 18 Inch Neodymium Woofer Speaker Model No.: 18DN115 This 18 inch powerful subwoofer pro speaker uses good quality 113×17mm neodymium magnet & 4.5 inch voice coil. The rated power is around 1500 watts, and the maximum power can reach 3000 watts. Professional processing and strict QC control ensure its superior quality. It's a good choice for stage performance, home theatre and karaoke. This 18" neodymium pro audio sub-woofer provides excellent sound without distortion. General Specifications: Magnet Size: 113×17H Sensitivity: 98 dB