Specifications: 1) RMS power: 1000W 2) MAX power: 2000W 3) Impedance: 4 Ohm 4) Sensitivity (1W, 1M): 101dB 5) Frequency response: 30Hz - 200Hz 6) Components: Dual 18" woofer with die-cast aluminum frame 7) Connections: 'Speakon' and 1/4" phone jacks 8) Enclosure: 18mm plywood) cabinet with textured paint finish, steel grille, rubber feet, recessed handles, rear wheel 9) Recommended amplifier/peripheral: P-PA-3500 and FP-232 Inner packing: Dimensions: 1065 x 660 x 740mm N. W. (unpacked): 77. 5kg Please refer to our website for more information and more models, thanks.