15" ferrite subwoofer offers 1000Wrms (AES) continuous power handling and a frequency response of 40Hz-2500Hz 4" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression Double suspension and a “multi-roll" surround provide exceptional linearity at extremes of cone excursion Intelligent heat management in both chassis and magnet assembly design further minimises distortion Less than 10kg - very low weight for this product class