Z Sub18 Subwoofers,Awesome bass is what you get with these amazing bass bins, The kam zsub18 is a monstrous scoop cabinet subwoofer, The huge 18" scoop design allows 800 watts of bass to literally ooze from the unit at a level never before heard at this price point. A built in crossover and supplied with castors, means the zsub18 can conveniently be merged into any existing sound system. Complete with built in handles, reinforced corners its well designed for life on the road. What venue could the ZSub 18's NOT do!