Features and applications:By adopting high power drivers and precise design coordinated with integrated formation line array bugle, the speakers feature high sensitivity, high mobility, and high SPL. Thanks to the safe transporting facilities and quick installment and dismantle system, they are ideal for using in stadiums, stages, multi-function halls, auditorium, and other flow performance sites  where high quality sound system were desired.*1x18"Ultra-LF driver*Simple suspension devices*Quick suspension and mounting*Ergonomic knob*Waterproof and bump proof corundum coating*Multi-layer birch ply*Enhanced steel grill, acoustic ventilation filter screen*Suitable for using in stadium, stage, multi-function hall, auditoria hall, and other movable performance venuesSpecifications：Frequency Range (+/-3 dB):40Hz - 300HzSensitivity: LF 99dBMaximum Peak SPL: LF 129dBDriver：LF1x 18"Nominal Impedance: LF 8ΩPower Handling:  LF1x 600WConnection:2x Speakon NL4Product dimensions:(WxDxH) 752X600X520MMN.W: 46KG