The LF18X451 features fibre loaded cone assembly along with high excursion triple roll, constant geometry surround, this combination provides remarkable strength and peak to peak maximum excursion of 54mm. The new dual forced hyper-venting system guarantee very efficient voice coil ventilation for minimum power compression and incredible power handling. Double silicon spider system ensures excellent control during large excursions. Fully optimised T-pole design generate the minimum amount of flux modulation.