JBL EON 518S Active Subwoofer

500 watt High-Performance Powered Subwoofer System
True portability weighing only 29.5 kg (65 lb)
Compact enclosure
Designed handles with comfort rubber grips for easy transport
18″ Differential Drive® low-frequency driver with neodymium magnet for low-distortion and light weight
Efficient Class-D digital amplifier technology
Stereo balanced loop-through outputs
Integrated and switchable High Pass Filter on loop-through outputs
Easy “daisy-chain” connections for extending the system
Polarity reverse selector
Integrated 36 mm pole mount socket for sub/satellite applications
Rugged DuraFlex™ finish