The LF21X451 21" Low Frequency Woofer from RCF offers a linear frequency response and high power handling while generating a low harmonic distortion. The LF21X451 uses a fiber loaded cone assembly along with a high excursion triple roll surround. This combination provides good strength and a peak-to-peak maximum excursion of 54mm. The dual forced hyper-venting system helps guarantee efficient voice coil ventilation for minimum power compression. A double silicon spider system helps ensure excellent control during large excursions. A fully optimized T-pole is designed to generate a minimum amount of flux modulation.
4.5" fiberglass inside, copper voice coil on the outside
Dual forced hyper-venting system
Dual spider design with silicon based dampening control
Triple-roll surround and corrugated straight cone geometry
BL of 30.5 Txm to provide a faster and accurate low frequency
Designed for use in applications where combinations of incredible power handling, reasonable weight and ultra fast time response are required
Suited for powerful lows in horn loaded sub bass systems or reflex designs