Designed to be the highly cost effective companion subwoofer for YX Series cabinets, the powered YX18SP subwoofer's integrated amplifier delivers 500 watts to the highly efficient 18-inch woofer. A compact front-loaded bass reflex design ensures exceptional performance in the vital 45 to 150Hz range. A solid plywood cabinet construction, all-metal handles and metal top speaker mount guarantee unmatched long-term reliability for highly demanding mobile PA applications and club installs.