The LF12X401 uses fibre loaded cone assembly along with high excursion triple roll surround. This combination provides remarkable strength and peak to peak maximum excursion of 50mm. The new dual forced hyper-venting system guarantee very efficient voice coil ventilation for minimum power compression and incredible power handling. Very linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range.