Popular 18 Inch pro audio speaker subwoofer 

Product Introduction: Popular 18 Inch  pro audio speaker subwoofer Model No.: 18P300 This hot sale 18 inch stage woofer speaker uses 220*25mm ferrite magnet & 4 inch voice coil.  The rated power is around 800 watts, and the maximum power can reach 1600 watts.  Professional processing and strict QC control ensure it meets the very highest standards of performance and reliability.  It's a good choice for stage performance, home theatre and karaoke.  This 18" pro audio PA woofer provides powerful and accurate bass frequencies with minimal distortion and power compression.  General Specifications: Magnet Size:  220×25H Sensitivity:  95 dB