BASSBOSS VS21 Powered 21 inch Subwoofer

BASSBOSS VS21 Powered 21 inch Subwoofer
BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer BASSBOSS VS21 Powered 21 inch Subwoofer
Product Code: VS21
Reward Points: 49
Availability: In Stock
Price: $4,995.00 $3,995.00
Price in reward points: 4995
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Low-End Lovers Seek Extended Depth With High-Intensity Punch. Get both Get Punch & Heft with the VS21

The BassBoss VS21 Delivers:

  • Punchy AND Full Deep Bass
  • Very High Output SPL
  • Versatile for Dance to Acoustic

Brings love of extended low frequency together with need for horn-loaded hits. Satisfy your demands for hard-hitting live kicks to rolling bass of an 808. No longer forced to choose either deep OR punchy – enjoy them together. Ideal for shows spanning genres with intense dance-floor coverage.

WHY CHOOSE A VS21 Subwoofer?

Love in your face bass with plenty of thump? This is your cab.

Versatility that covers every genre, with massive punch and plenty of heft. Excellent transient response is delivered by the efficient performance of the horn at the upper end of the subwoofer range. Fits in the same space as the CVL36, and gives you exponentially more BOOM.

The resulting impression is a very big, heavy hit. Extended depth is delivered by the large acoustical volume, low tuning and the massive displacement of the long-excursion 21″ woofer.


BASSBOSS subs are optimized for full-power usage.

Multiple proprietary protection technologies ensure that the woofers remain within their excursion and thermal limits, so they don't break or burn like other subs. BASSBOSS provides much higher levels of deep bass than mass-market subs, reliably.

With plenty of headroom to keep up with the most enthusiastic crowd and not run out of bass.

So turn it up, and keep it up. BASS is good for you.


The VS21 is a vented short horn hybrid single 21″ subwoofer. It is 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.

BASSBOSS cabinets are hand-built in the USA. Constructed from 18mm Baltic Birch plywood, using dado joints, screws and advanced composite adhesives.

A top-mounted pole socket in each VS21 provides for mid-high loudspeakers to be mounted on a straight speaker pole above the subwoofer. The enclosures feature four large rubber feet on the bottom and four on each side, with corresponding recesses in the opposite side to facilitate interlocking the boxes when stacked.

Arrays of multiple boxes combine to devastating effect. With rubber feet on 4 sides, the VS21 can be stacked and interlocked in blocks of 4, 6 or 8 boxes with the horn sections coupled for increased impact. The feet on the bottom and back lock into the V transport carts and the feet on the sides lock into the H transport carts.

The VS21s can also serve as a ground-support platform for the LA88 Line Array. (With optional hardware.) The VS21 is an extremely versatile loudspeaker not only for multiple applications and genres but for expansion as well. Start with 2 and grow to 32, there’s nothing you won’t be able to do.


A 2400W RMS amplifier with integrated, comprehensive DSP is included. The amplifier is rated for RMS output using continuous sine wave signal.

This is not a Peak or Burst power rating. BASSBOSS uses only continuous RMS power ratings because you’re not going to be using your sub in millisecond bursts. For subwoofer applications, Peak and Burst power ratings are largely irrelevant.

The amplifier is capable of delivering 2400W of continuous output. This ensures the amp isn’t the limiting factor in the output of low frequencies. Providing abundant power prevents overheating issues and virtually eliminates the damage that clipping a too-small amp can cause.

For larger events, several arraying options are available. Block arrays, side-by-side arrays and front/back Cardioid arrays can be deployed securely thanks to the interlocking feet. Presets are included in the DSP.


All that electrical power is converted into acoustical energy by a 21″ Neodymium motor woofer. This premium-quality, driver features split-wound 4.5″ 4-layer copper-clad aluminum voice coil, and peak-to-peak excursion capability of up to 60 mm.

High-intensity Neodymium magnets are lighter and provide higher efficiency so the result is a lighter and louder cabinet. Split-wound coils produce a more linear force through the range of movement of the cone, which results in lower distortion and improved linearity at high output.

The cones are waterproofed to protect them from possible, accidental exposure to moisture such as rain or spilled beverages. Waterproofed woofer cones also permit the cleaning of drivers that have been soiled in a dirty or dusty environment with the use of a damp cloth. Keep the amplifiers dry and party on!

Waterproofed cones in all products. Optional weatherized and weather resistant loudspeakers have the same acoustical performance as our standard options. If your system is likely to be exposed to rain, ask about IP rated amplification options. If you have need of a system for outdoor installation, ask about Weatherized products.


BASSBOSS subs can be connected directly to your mixer with nothing but signal cable in between. The built-in processing is comprehensive and yet minimal manipulation is applied to the signal. The processing includes only a high pass filter and a low-pass filter. There is no need for any EQ in the signal for the speaker to provide a broad, flat frequency response. A sophisticated limiter system protects the woofer from thermal and over-excursion damage.

Plug-and play with peace of mind. Multiple, sophisticated protection systems make the loudspeaker virtually indestructible. You can turn on and turn up, all night, without fear of over-driving to the point of damage.


BASSBOSS technical specs are based on measurements of continuous performance in normal usage. Other manufacturers may specify output based on calculations rather than measurements; measurements outside the operating bandwidth; or on ‘Burst’ or ‘Peak’ readings.

BASSBOSS specifications are conservative compared to most manufacturers. They reflect what the products will achieve, consistently, in the real world. Since the real world is where you’ll be using your gear.

Read more about BASSBOSS Designer David Lee’s specifications philosophy on ProSoundNetwork.


  • Loudspeaker Description High-output Single 21 inch Subwoofer
  • Frequency Response (±3 dB) 27 – 100 Hz
  • Maximum Sustained Output 132 dB SPL, 1 meter, half-space (ground plane)
  • Nominal Dispersion (H° x V°) 360 x 360 – Cardioid Mode Available with Multiple Boxes

BASSBOSS VS21 Electrical Specifications:

  • Amplification: 2400 Watt Continuous RMS Class D Subwoofer Amplifier
  • Processing: Integrated comprehensive DSP provides high pass, low pass, phase alignment and limiting
  • Electrical Connectors, Amplifier: Neutrik powerCON Input (Blue) NAC3FCA
  • Electrical Connector, Mains: Standard US 3-pin 120V electrical plug: NEMA 5-15 (Edison)
  • Voltage Operating Range: 90-132VAC, 55-65Hz
  • Current Draw, Nominal: 360 W, 3A @ 120 volts (typical, 1/8 max power)
  • Signal Input Connector: XLR-F
  • Signal Output Connector: XLR-M (pass-through only)

BASSBOSS VS21 Physical Specifications:

  • Enclosure Type Vented, short-horn hybrid
  • Transducer 1 x 21 inch diameter (540 mm) neodymium motor woofer with 58 mm (2.28″) peak to peak excursion. Waterproof fiber composite cone
  • Cabinet Construction 18mm Baltic Birch plywood, dado joints, stainless steel hardware
  • Dimensions Vertical (HxWxD) 36 in. x 24 in. x 36 in. (37.5 in. high with feet)
  • Net Weight 180 lbs
  • Shipping Weight 230 lbs
  • Exterior Finish Rugged, weatherproof, black textured, bonded high-pressure polyurethane coating
  • Grill Perforated, powder-coated steel
  • Pole Sockets 1 (35 mm)
  • Handles 6 Integrated Handles


  • Flying Hardware: Side-pull anchors and/or shoulder eyebolts
  • Suspension System: 16 x 3/8 in.-16tpi threaded flypoints
  • Amplification for Installation: Complete power package including DSP in two space rack chassis for permanent installations
  • Installation Version: Available without handles and pole sockets
  • Transport Dollies: Dolly cart with 4 locking casters and recesses to accept interlocking cabinet feet for transporting 1 cabinet vertically (24″x36″x6″), Dolly cart with 4 locking casters and recesses to accept interlocking cabinet feet for transporting 1 to 3 cabinets horizontally (36″x36″x6″)
  • VS21-RPI: Installation version, amplification mounted in a rack chassis. For installations where electrical supply can’t be installed near the speaker location
  • VS21-RPF: Installation version, amplification mounted in a rack chassis. 16 3/8″ threaded fly points. Required for installations where the subwoofers need to be flown
  • VS21-RPW: Weatherized outdoor version features a stainless steel grill, additional ingress protection over acoustical openings, complete interior coating and weatherized input connectors along with the amplification mounted in a rack chassis
  • Covers: Heavy-duty padded nylon transport covers for 1, 2 or 3 cabinets


BASSBOSS self-powered loudspeaker electronic components, amplifiers and digital processors are warranted for a period of three years from the date of purchase, subject to the limitations outlined below.


BASSBOSS loudspeaker cabinets (wood, joinery and fasteners) are warranted for a period of 6 years from the date of purchase against defects in materials and workmanship, subject to the limitations outlined below. It is our goal to provide trouble-free loudspeakers. That objective begins as part of the design phase but it continues on through to any service you may require. In order to be able to provide the lowest possible failure rate, the best possible warranty service and the fastest turn-around time,we request that you contact us immediately if you notice any problem with your system, but before you attempt any repairs.

We can usually provide the best and fastest solution if we know the details of the problem before any repair attempts are made. Warranty service is a service, and part of that service includes helping you prevent failures and minimize repair and shipping costs. While it is necessary for us to place limits on the warranty, we do so to discourage abuse and make it possible for us to use our discretion to provide superior service.


During the warranty period, if your loudspeaker malfunctions or fails due to any defect in components or manufacturing, the failed parts will be repaired or, at our sole discretion, replaced. This warranty does not extend to damage resulting from improper installation, misuse, neglect or abuse. Warranty status will be determined upon inspection by BASSBOSS personnel.

This warranty does not cover labor other than that authorized and performed by BASSBOSS personnel. Service will be performed upon the return of the failed unit, together with its original sales receipt or other proof of purchase, to BASSBOSS or an Authorized Service Facility.

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