Celestion : T5611: 15″ 1000W Speaker 8OHM

18″ ferrite subwoofer provides 1000Wrms (AES standard) power handling and a frequency response of 30Hz-2500Hz4″ high temperature Inside/Outside voice coil efficiently dissipates heat preventing sensitivity loss through thermal compressionDouble suspension and a multi-roll surround provide exceptional linearity at extremes of cone excursionIntelligent heat management in both chassis and magnet assembly design further minimizes distortionLess than 10kg very low weight for this product classNominal diameter 457mm/18inPower rating 1000WrmsNominal impedance 8OSensitivity295dBFrequency range 30-2500HzVoice coil diameter 100mm/4inChassis type Cast aluminiumMagnet type FerriteMagnet weight 3.1kg/110ozCoil material Round copperFormer material Glass FibreCone material Glass loaded paper with weather-resistantimpregnationSurround material Cloth-sealedSuspension DoubleXmax 8mm/0.33inGap depth 9.5mm/0.37inVoice coil winding width 25mm/0.99in