Air-suspended amplified subwoofer with wireless-ready class D passive radiator. 2 overlapping 30cm front woofers with aluminum alloy cone and rear carbon fiber blade reinforcements, with best 12mm excursion and with ventilated central pole. 2 passive radiators, one towards the bottom and the other at the rear, 30cm long, with double centering and superProgressive with improved 30mm travel. 1000W amplifier power in class D with NexGen5 and 110dB pressure. Completely new "Perfect Filter" Xover filter. Variable crossover frequency. Phase 0/180°. Both high and low level inputs (Hi level and .1/LFE) with independent volume and frequency cut adjustment. Compatible with Airship wireless system. Sturdy rail feet in satin aluminum.