The LF21X451 low frequency transducer is the result of many years of R&D developments with goal of creating new levels of professional audio performance standards. This products features advancements and improvements in all the key areas of transducer technology. Incredibly linear frequency response characteristics, highest power handling of any comparable transducer, lowest power compression. The LF21X451 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.