18 Sound 21NLW9601 speaker, 8 ohm, 21 inch98 dB SPL 1W / 1m average sensitivity 135 mm (5.3 in) split winding four layers ISV copper coil 3600 W program power handling Carbon fiber reinforced treated cellulose cone 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 No review for this product, be the first to place your review. |