BassBoss VS21-MK3 Single 21 inch Powered Subwoofer

The VS21-MK3 is a single-driver subwoofer built around a 21-inch neodymium woofer on a 4.5-inch voice coil in a vented short-horn hybrid enclosure. 2,500 watts of Class D amplification holds 135 dB sustained and 138 dB peak from 28 Hz, with dual blower fans that auto-engage under peak load alongside multi-stage thermal, excursion, and clipping protection.

Four 35mm pole sockets, 16 M10 fly points, and interlocking rubber feet and foot pockets support flown arrays, stacked pairs, or a top like the CCM12 poled straight on top. Power comes in on Neutrik powerCON True1 from an auto-sensing 100-240 VAC supply, with ControlBASS handling networked preset control over EtherCON.

Frequency Response	28 - 100 Hz (+/- 3 dB)
Max Sustained SPL	135 dB at 1 m half-space
Peak SPL	138 dB at 1 m half-space
Dispersion	360 degrees, cardioid with multiple cabinets
Transducers	1 x 21 inch (540mm) neodymium, 4.5 inch voice coil, vented short-horn hybrid
Amplifier	2,500 W Class D
Current Draw	4.6 A at 120 V / 2.3 A at 240 V
Dimensions / Weight	37.5 x 24 x 36 in (with feet) / 180 lb (82 kg)