The sturdy magnetic unit, with 15 mm thick plates and specially designed suspensions ensure an excellent control of amplitude of over +/- 12 millimetres. The special cooling system with forced air ventilation offer a great heat dissipation and the minimum levels of power compression available on the market. Voice coil construction, suspensions and cone materials are upgraded in order to withstand up to a Kilowatt RMS power. FEATURES:[ Nominal Diameter: 460/18 mm/inch [ Rated Impedance: 8 Ohm [ Program Power: 2000 Watts [ Power handling capacity: 1000 Watts [ Sensitivity: 97 dB [ Frequency Range: 35-1000 Hz [ Effective Piston Diameter: 380/15 mm/inch [ Maximum Excursion Before Damage (peak to peak): 40/1.6 mm/inch [ Minimum Impedance: 6.0 Ohm [ Voice Coil Diameter: 100/4 mm/inch [ Voice Coil Material: copper[ Voice Coil Winding Depth: 23/0.9 mm/inch [ Number of layers: 2 [ Kind of layer: Inside/Outside [ Top Plate Thickness: 15/0.6 mm/inch [ Cone Material: No pressed pulp [ Cone Design: curved[ Surround Material: Polycotton [ Surround Design: M-roll [ Overall Diameter: 470/18.5 mm/inch [ Bolt Circle Diameter: 438 mm [ Bolt Hole Diameter: 8/0.3 mm/inch [ Front Mount Baffle Cut-out: 416/16.4 mm/inch [ Rear Mount Baffle Cut-out: 418/16.5 mm/inch [ Depth: 209/8.3 mm/inch [ Volume occupied by the driver: 6.5 liters/ft3 [ Net Weight: 14/31.1 Kg/lbs ";