Features:
Components:  2 x 18" Bass Drivers with 100mm (4") Voice Coil and "Alloy" Chassis
Sensitivity: 104dB 1W/1mtr (half space)
Maximum SPL (program): 140dB 
Frequency responce: 36Hz-190Hz (-6dB)
Connections: 2 x SPeakon NL4 Sockets 
Box Consruction: 18mm, High Density Poplar Plywood. CNC Manufacturing 
Lifting: 8 x Recessed, Steel Bar Handles
Vertical and Horizontal Stacking Rails
Mid-High Mounting: 2 x M20 Recessed "top-hat" Mounts
Net Weight: 86kg (without casters)
Size (W x D x H)mm: 765*740*1073
Heavy duty punched, protective, grill with rear foam for dust proofing and abuse protection
Waterproof and Wear-Resisting Paint finish
Colour: Black
3-year Australian warranty (warranty does not cover over-driven coils)
Electrical:
Power handling (Program): 4800watts
Nominal Impedance: 4ohm
Recommended Crossover Frequencies:
High-Pass: 38 - 55Hz @ 24dB/octave
Low-Pass: 160 - 100Hz @ 24dB/octave