Speaker RCF 18 Inch L18P400 Grade A

Specifications:Nominal Diameter:18 inch / 457 mmRated Impedance:8 ohmProgram Power (watt):2000 WPower handling capacity:1000 WSensitivity:97.5 dBFrequency range:25 - 1000 HzEffective piston diameter:395 mm / 15.55 inchMax. Excursion Before Damage:50 mm / 1.97 inchMinimum Impedance (ohm):6.5 ohmVoice Coil Diameter:4.0 inch / 102 mmVoice Coil Winding Material:CopperVoice Coil Length:25 mm / 0.98 inchNumber of layers:2Kind of layers:inside/outsideTop Plate Thickness:15 mm / 0.59 inchCone Design:StraightSurround Material:PolycottonSurround Design:Triple rollMagnets:CeramicDual-force air ventilation:YesSpider:Dual with silicon based damping control