The new 21SW4000-NDY-2 is an advanced, high-strength Neodymium subwoofer driver featuring a 5.3” inside/outside copper coil with an unique dual forced design ventilation system. This combination deliveries 2000 Watts RMS power handling and a minimum weight of 30.2 lbs. making this subwoofer an unique product in his category.

The combination of special treated carbon fiber loaded cone assembly, large triple roll surround and a double silicon spider gives the 21SW4000-NDY-2 remarkable strength and excursion control under its large 15 mm Xmax, 72 mm peak-to-peak excursion before damage.

Featuring a 2 ohms voice coil and unmatchable low frequency output with a fully optimized T-pole design, this 21” subwoofer creates a whole new category on its class!

21SW4000-NDY-2

21" Subwoofer Loudspeaker

Nominal Impedance: Rated Power Handling: 2000 Watts Program Power: 4000 Watts Sensitivity (1W/1m): 97 dB Resonance Frequency (Fs): 32.2 Hz Frequency Range at -10 dB: 35 - 1,200 Hz Recommended Hi Pass X-Over: 45 Hz Xmax: 15 mm Voice Coil Diameter: 5.3" Magnet Material: Neodymium Frame Material: Die Cast Aluminum Weight: 30.20 Lbs Mounting Depth: 9.64” (245 mm) Replacement Cone Kit: RK21SW4000-NDY-2