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BASSBOSS VS21-MK3 21" Powered Sub

Q&A SKU #M01800000000000
4995.0 $4,995.00
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A 21" powered subwoofer with deep bass and high impact.

The active BASSBOSS VS21-MK3 features punchy and full deep bass, very high output and versatility across all genres from a club scene to an acoustic performance. Its massive output is smooth, even, accurate and clean. The VS21-MK3 is able to satisfy the demands of hard-hitting live kick drums to the deep, rolling bass of an 808. This vented, short horn hybrid single 21" powered subwoofer has a frequency response from 25–90Hz. The VS21 offers output SPL comparable to a bigger double-18” cabinet and allows more output to be focused forward thanks to its smaller frontal area. The amplifiers and DSP feature powerful 96kHz processors with pristine sound quality and eight touch-of-a-button on board presets. The state-of-the-art Class-D amplifier provides a true 2,500 watts of RMS power. The amplifier is capable of delivering continuous power, ensuring that it isn’t the limiting factor on your quest for low frequency. Additionally, by providing an abundance of power, the possibility of overheating and damage to the woofers caused by clipping is virtually eliminated.

Control BASSBOSS software provides additional computer-accessible presets, networked remote control and remote DSP updates. Each unit features dual Ethernet ports with a built-in network switch for computer connectivity and cascading networking ability. IP65 waterproof connectors provide peace of mind in unpredictable environments, and the MK3 line offers 90–250VAC global power compatibility for use all over the world. The VS21-MK3 features a massive displacement, long excursion 21" woofer, rear-loaded into a large acoustical volume that is tuned to a low frequency and front-loaded onto a short horn. The vented enclosure section provides extended low frequency performance, and the horn section provides increased upper frequency sensitivity and improved transient response.

These features bring the benefits of extended low frequency together with the benefits of high impact. Excellent transient response is delivered by the efficient performance of the horn at the upper end of the subwoofer range. Extended depth is delivered by the large acoustical volume, low tuning and the massive displacement of the long-excursion 21" woofer. The combination provides an immediate hit with the added power of full and effortless low-end extension.


  • Punchy and full deep bass
  • 96kHz DSP processors with pristine sound quality and onboard presets
  • Control BASSBOSS software provides additional features
  • Long-excursion 21” woofer

Order the BASSBOSS VS21-MK3 21" powered subwoofer today.


VS21-MK3 21" Powered Sub Specifications:

  • Frequency response (±3dB): 25–100Hz
  • Maximum sustained output: 132dB SPL, 1 meter, half-space (ground plane)
  • Max SPL (peak): 139dB
  • Nominal dispersion (H° x V°): 360 x 360, cardioid mode available with multiple boxes
  • Amplification: 2,500W continuous RMS Class-D subwoofer amplifier
  • Processing: High and low pass, phase alignment and limiting
  • Enclosure type: Vented, short-horn hybrid
  • Transducer: 21" diameter (540 mm) neodymium motor woofer with 58 mm (2.28") peak-to-peak excursion, waterproof fiber composite cone
  • Cabinet construction: 18 mm Baltic birch plywood, dado joints, stainless steel hardware
  • Dimensions (HxWxD): 36" x 24" x 36" (37.5" high with feet)
  • Net weight: 180 lb.

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