It is a simple pattern of i-2000, which can transversely hanging. It is a 2-ways full range speaker, contains one sweeter unit and two 15-inch woofer units. It has flexible hanging, changing installation devices. i-1500 medium frequency is mature, powerful penetration ability, couple with BOUTUM V2018 woofer to be a perfect performance system, used to massive performances, indoor disco, nightclub, hall.