21NLW9601 Driver 21inch Neodymium...
 Made in Italy
 98 dB SPL 1W / 1m average sensitivity
 135 mm (5.3 in) split winding four layers ISV copper coil
 Carbon fiber reinforced treated cellulose cone
 Nominal Power Handling 1800W
 Continuous Power Handling 3600W
 Triple Silicon Spider (TSS) improves excursion control and linearity even in extreme loading and SPL conditions
 Single Demodulating Ring (SDR) for lower distortion
 Low noise cooling design for very low power compression
 Suitable for bandpass and horn loaded subwoofer designs