21NLW9001 Driver 21inch Neodymium...
Made in Italy
95 dB SPL 1W / 1m average sensitivity
135 mm (5.3 in) Interleaved Sandwich Voice coil (ISV)
3600W program power handling
60mm peak to peak excursion
Ultra linear dual magnet motor design
Single Demodulating Ring (SDR) for lower distortion
Composite reinforced straight ribbed cone
Optimized high grade ferrite magnet assembly
Recommended for subwoofer usage in compact vented enclosures