VS21-MK3Single 21″ Powered Subwoofer

$4,995More Pricing →

Drum Punch

VS21-MK3

Single 21″ Powered Subwoofer

$4,995USD

28-100 Hz
Freq Response · ±3 dB: 135 dB SPL
Max Sustained SPL: 2500 W
Class-D Amplifier: 96 kHz
DSP · 100 Presets

Built for
these gigs.

Need massive bass from one cab you can move yourself? VS21-MK3 is the answer.

Use VS21-MK3 for

Mobile DJ flagship rig
Mid-size club installs
One-truck touring production
Boutique festival stages

Probably not the move for

Different gig? We'll point you to the right sub.

Sweet and strong,
packs a wallop.

Horn punch, vented depth.
A rum punch of bass: sweet, deep, and powerful. Horn-loaded for the attack, vented for the extension, giving you total dance floor mastery.

Sweet and strong,
packs a wallop.

Horn punch, vented depth.

A rum punch of bass: sweet, deep, and powerful. Horn-loaded for the attack, vented for the extension, giving you total dance floor mastery.

You really can't have too many. 😉

A deep reserve of class-D continuous power means the amplifier is never the bottleneck. Higher rail voltages land every kick, while steady sustained output keeps the low end liquid.

Five bodyguards, zero drama.

Five limiters work in concert, including thermal, excursion, and clipping, each protecting the driver differently. The woofer can take everything you throw at it while the transients stay clean.

Warning: BASSBOSS is addictive.

A 6th-order bandpass hybrid: a large vented chamber tuned low, front-loaded onto a short horn for upper-range sensitivity. The blend is impactful mid-bass plus low-lows down to 28 Hz.

Save your presets for max impact.

96 kHz DSP with 8 onboard presets, switchable in real time with zero dropout. Store up to 100 with ControlBASS. Dial in once, save, rinse and repeat.

Rolls right through the weather.

The auto-sensing 100–240VAC power supply provides reliable performance worldwide, and IP65 waterproof connectors with sealed inputs keep the electronics safe from the elements.

Get Deep.

VS21-MK3

Single 21″ Powered Subwoofer

Retail

$4,995USD

Color

BlackWhite

Let's talk gear

Freq Response · ±3 dB: 28-100 Hz
Max Sustained SPL: 135 dB SPL
Class-D Amplifier: 2500 W
DSP · 100 Presets: 96 kHz

Finance It Buy now, pay over time* with Synchrony. *Subject to credit approval. Apply Now

Lease-to-own also available through Hampton Ridge Financial.

We got your bottom.

Year Warranty

You're covered.

With 3 years on drivers and electronics, 6 on cabinets, with full transferability, our Sound Defense warranty covers you gig after gig.

See full warranty

Free Freight Lower 48

Free is good.

BASSBOSS products are shipped via palletized freight. Outside the US 48? Our team or a local dealer can help. Contact us.

Freight FAQ

Day Money-Back

Love your rig.

Every BASSBOSS purchase includes a 30-day money-back guarantee, and free freight both ways if you're not fully satisfied.*

Return policy →

∞

Firmware Updates

Gets better + better.

ControlBASS firmware updates are free, forever. Performance improvements, new features, and expanded preset libraries release often.

ControlBASS software

Expert Support

We get it!

Our support team includes working engineers, and they know the product inside out. Phone, email or chat, we're here to help.

Help desk

Outfit your rig.

Heavy-duty, production-ready carts and covers.

See all accessories

Out of stock

VS21 Vertical Wheel Cart

Carries 1 VS21-MK3 cabinet, upright.

VS21 Horizontal Wheel Cart

$395

Carries up to 3 VS21-MK3 cabinets, horizontal.

VS21 Cover

$410–$665

Protect your gear with our heavy-duty covers with embroidered logo. Built to survive abuse!

Style

4 handle cut-outs$4108 handle cut-outs$450Double stack$600

Padding

Add zippered cable pocket (+$25)

Ships in three to four weeks.

Specs + Resources

Loudspeaker Type: Single 21″ self-powered subwoofer
Frequency Response: 28-100 Hz (±3 dB)
Max Sustained SPL: 135 dB SPL @ 1m half-space
Peak SPL: 138 dB SPL @ 1m half-space
Dispersion: 360° × 360°: Cardioid mode w/ multiple cabinets
Transducers: 1 × 21″ (540mm) neodymium · 4.5″ (115mm) voice coil · vented short-horn hybrid

From the Family

The VS21-MK3 in its natural environment:
art cars, epic clubs, off-the-grid festivals and backyard parties.

Multiple VS21-MK3 systems at outdoor event

VS21-MK3 lit with pink and green stage lights

Guy sitting on wall of VS21-MK3 in showroom

That's what they said.

Alican Bodur

ALI-J · @alijmusic

They deserve every penny!! … With my speakers, I got the same quality as my near field studio speakers, and plus I can crack the volume higher and be able to use it on my small parties. Definitely recommend it!

Dave Hodnick

Submersive Audio

Just had a killer show last night. We absolutely destroyed the club. The rig is sounding great! Here’s what they said after our last show: “Kicked ass and props on the bass too, sound was really good!”

Eddie Mapp

FOH Touring Engineer

The human range of hearing starts at 20 Hz. Why settle for 40 Hz? BASSBOSS creates pure, powerful and natural low-end. When listening to acoustic tracks I heard and felt depth in the music that I haven't gotten from other speaker manufacturers.

Albert Caballero

Stage, Lights & Sound

I have been using Meyer Sound for years. I was at a festival and a friend of mine was running the BASSBOSS Subs. I was floored by the sound levels BASSBOSS was able to achieve using half of the number of cabinets. From that point on, I switched to BASSBOSS!

Compare Subs Line

See how the VS21-MK3 compares to the rest of the BASSBOSS low-end product line.

Full Comparison in CompareBASS →Compare all products

Head to head

SSP118 vs VS21

BB15-MK3

Single 15" powered subwoofer

$2,995

LF40-115Hz
Max SPL127 dB
AMP2,500 W
DRVSingle 15″

DJ18S-MK3

Single 18" powered subwoofer

$3,495

LF27 – 100Hz
Max SPL129 dB
AMP2,500 W
DRVSingle 18″

SSP118-MK3

Single 18" powered subwoofer

$3,995

LF30 – 100Hz
Max SPL130 dB
AMP2,500 W
DRVSingle 18″

This Model

VS21-MK3

Single 21" powered subwoofer

$4,995

LF28 - 100Hz
Max SPL135 dB
AMP2,500 W
DRVSingle 21″

View Full Specs ↓

SSP215-MK3

Dual 15" powered subwoofer

$5,495

LF35 – 100Hz
Max SPL133 dB
AMP5,000 W
DRVDual 15″

SSP218-MK3

Dual 18" powered subwoofer

$5,995

LF30 – 100Hz
Max SPL136 dB
AMP5,000 W
DRVDual 18″

ZV28-MK3

Dual 18" powered subwoofer

$5,995

LF23 – 90Hz
Max SPL134 dB
AMP5,000 W
DRVDual 18″

Makara-MK3

Dual 21" powered subwoofer

$7,995

LF23 – 100 Hz
Max SPL140 dB
AMP5,000 W
DRVDual 21″

Kraken-MK3

Quad 21" powered subwoofer

$17,995

LF27 – 100 Hz
Max SPL145 dB
AMP10,000 W
DRVQuad 21″

Subs to Tops Ratios.

The VS21-MK3 shines in complete BASSBOSS systems: sub and tops, dialed in and ready to go.

SV9-MK3

Single 9" powered top

1× eachDetails →

DiaMon-MK3

Single 12" powered top

1-2× eachDetails →

DV12-MK3

Single 12" powered top

1-3× eachDetails →

CCM12-MK3

Single 12" powered stage monitor

1-2× eachDetails →

Attuned12

Single 12" powered loudspeaker

1-3× eachDetails →

AT212-MK3

Dual 12" powered top

1-6× eachDetails →

AT312-MK3

Triple 12" powered top

1-4× eachDetails →

MFLA-MK3

Dual 12" powered line array

3-6× eachDetails →

Krakatoa

Quintuple 18" powered point source

Up to 32× eachDetails →

Popular Systems.

The VS21-MK3 in complete systems: subs and tops, dialed in and ready to go.

Production Pair

AT212-MK3

Dual 12″ powered two-way

$4,995

Pairs with the VS21 for a high-output production rig that still loads in one truck.

View AT212-MK3 →

System Match

Frequency Range Overlap: see which products cover which ranges, and where a top and sub pair overlaps or leaves a gap.

Sound education

SPL vs Distance

Sound drops with the inverse square law. See how much level you lose at every distance from the source.

Sound education

How Low Can You Go?

Play tones through your own speakers and sweep down to find where they tap out, then see what a BASSBOSS sub would add.

System design

PredictBASS

Model bass coverage in any space before load-in. Drop in subs, see the dead zones, optimize placement.

The All New
ControlBASS

With ControlBASS, any laptop becomes a full system controller over standard Ethernet. Monitor, tune, and recall presets, without touching a cabinet. Free for macOS and Windows.

Onboard presets tuned for each cabinet, and up to 100 presets via ControlBASS. An all-new GUI is coming soon.

The All New
ControlBASS

With ControlBASS, any laptop becomes a full system controller over standard Ethernet. Monitor, tune, and recall presets, without touching a cabinet. Free for macOS and Windows.

Onboard presets tuned for each cabinet, and up to 100 presets via ControlBASS. An all-new GUI is coming soon.

→

Real-time remote control

Adjust gain, EQ, and delay without touching a cab.

→

Live system monitoring

Track levels, temperatures, and gain reduction across every unit.

→

100 stored presets

Onboard presets tuned for each cabinet, accessible from the amp.

Download ControlBASS ↗︎

Explore the factory presets

See what each preset changes and find a starting point for your setup. Keep the cabinet's preset number and name handy, then listen and adjust on site.

→Explore illustrative filter curves
→Up to 100 stored presets via ControlBASS
→Explore this model's additional preset options

PRESET 01

VS21 27-70LR

HP 27 Hz BW · LP 70 Hz LR

8 presets.
Instant recall.

Select a preset to explore its illustrative curve. The model draws each preset’s own Linkwitz-Riley or Butterworth filters at 24 dB/octave; it does not represent measured loudspeaker response or cardioid coverage.

Learn how to use the presets →

PRESET 01

70 Hz upper crossover

Cabinet display: VS21 27-70LR

Use it when your tops take over at 70 Hz or higher with a Linkwitz-Riley high-pass filter. Gradually reduces rumble below 27 Hz.

Low-cut:: 27 Hz · Butterworth
Upper crossover:: 70 Hz · Linkwitz-Riley

Illustrative high-pass and low-pass filter response. This does not show the complete loudspeaker response, room coverage or all DSP processing.

Up to 100 stored presets via ControlBASS

Manage, name, and recall: all over Ethernet.

Select a preset

Start here, then listen and adjust on site. Relative levels, placement, the room and your speaker combination affect the result.

Linkwitz-Riley low-pass: try tops with an LR high-pass at the same frequency or higher. Relative levels can shift the acoustic crossover; listen and adjust on site.

Presets set up for one job. The tag on each one says which; pick one to see what it does.

Filter details and terminology

Low-cut (high-pass): Gradually reduces output toward lower frequencies. The response is already reduced at its cutoff; it does not stop abruptly there.
Upper crossover (low-pass): Gradually reduces output toward higher frequencies. Subwoofer and top responses overlap around the crossover.
Linkwitz-Riley (LR): A recommended starting point for the sub/top crossover. For a top's LR high-pass, try a sub's LR low-pass at the same frequency or lower. For a sub's LR low-pass, try a top's LR high-pass at the same frequency or higher. Verify the combination on site.
Butterworth (BW): A maximally flat passband with less attenuation around the cutoff than a Linkwitz-Riley filter of the same order. Lower-frequency BW high-pass presets are useful for full-range bass extension. Start with LR presets for a sub/top crossover.

PRESET 01: Cardioid · rear-facing cabinet

Reduce bass behind the system.

A cardioid setup uses forward- and rear-facing cabinets to reduce rearward bass. Apply the cardioid preset to the cabinet facing away from the audience. BASSBOSS recommends two forward-facing cabinets for each rear-facing cabinet. Placement, spacing, frequency and relative levels affect the result.

Arrange the cabinets.

Start with BASSBOSS’s recommended two-forward, one-rear configuration and the model’s setup guidance.

Set the rear-facing cabinet.

Select the appropriate cardioid preset on that cabinet. Use the appropriate forward-facing presets on the other cabinets.

Check the result.

Listen and measure in front of and behind the system, then adjust the setup as needed.

Illustrative cardioid coverage: more bass toward the audience and reduced output behind the array. Actual coverage depends on the setup.

Get Deep.

VS21-MK3

Single 21″ Powered Subwoofer

Retail

$4,995USD

Color

BlackWhite

Let's talk gear

Freq Response · ±3 dB: 28-100 Hz
Max Sustained SPL: 135 dB SPL
Class-D Amplifier: 2500 W
DSP · 100 Presets: 96 kHz

Finance It Buy now, pay over time* with Synchrony. *Subject to credit approval. Apply Now

Lease-to-own also available through Hampton Ridge Financial.

We got your bottom.

Year Warranty

You're covered.

With 3 years on drivers and electronics, 6 on cabinets, with full transferability, our Sound Defense warranty covers you gig after gig.

See full warranty

Free Freight Lower 48

Free is good.

BASSBOSS products are shipped via palletized freight. Outside the US 48? Our team or a local dealer can help. Contact us.

Freight FAQ

Day Money-Back

Love your rig.

Every BASSBOSS purchase includes a 30-day money-back guarantee, and free freight both ways if you're not fully satisfied.*

Return policy →

∞

Firmware Updates

Gets better + better.

ControlBASS firmware updates are free, forever. Performance improvements, new features, and expanded preset libraries release often.

ControlBASS software

Expert Support

We get it!

Our support team includes working engineers, and they know the product inside out. Phone, email or chat, we're here to help.

Help desk

Outfit your rig.

Heavy-duty, production-ready carts and covers.

See all accessories

Out of stock

VS21 Vertical Wheel Cart

Carries 1 VS21-MK3 cabinet, upright.

VS21 Horizontal Wheel Cart

$395

Carries up to 3 VS21-MK3 cabinets, horizontal.

VS21 Cover

$410–$665

Protect your gear with our heavy-duty covers with embroidered logo. Built to survive abuse!

Style

4 handle cut-outs$4108 handle cut-outs$450Double stack$600

Padding

Add zippered cable pocket (+$25)

Ships in three to four weeks.

That's what they said.

Alican Bodur

ALI-J · @alijmusic

Dave Hodnick

Submersive Audio

Eddie Mapp

FOH Touring Engineer

Albert Caballero

Stage, Lights & Sound

The All New
ControlBASS

With ControlBASS, any laptop becomes a full system controller over standard Ethernet. Monitor, tune, and recall presets, without touching a cabinet. Free for macOS and Windows.

Onboard presets tuned for each cabinet, and up to 100 presets via ControlBASS. An all-new GUI is coming soon.

The All New
ControlBASS

With ControlBASS, any laptop becomes a full system controller over standard Ethernet. Monitor, tune, and recall presets, without touching a cabinet. Free for macOS and Windows.

Onboard presets tuned for each cabinet, and up to 100 presets via ControlBASS. An all-new GUI is coming soon.

→

Real-time remote control

Adjust gain, EQ, and delay without touching a cab.

→

Live system monitoring

Track levels, temperatures, and gain reduction across every unit.

→

100 stored presets

Onboard presets tuned for each cabinet, accessible from the amp.

Download ControlBASS ↗︎

Explore the factory presets

See what each preset changes and find a starting point for your setup. Keep the cabinet's preset number and name handy, then listen and adjust on site.

→Explore illustrative filter curves
→Up to 100 stored presets via ControlBASS
→Explore this model's additional preset options

PRESET 01

VS21 27-70LR

HP 27 Hz BW · LP 70 Hz LR

8 presets.
Instant recall.

Learn how to use the presets →

PRESET 01

70 Hz upper crossover

Cabinet display: VS21 27-70LR

Use it when your tops take over at 70 Hz or higher with a Linkwitz-Riley high-pass filter. Gradually reduces rumble below 27 Hz.

Low-cut:: 27 Hz · Butterworth
Upper crossover:: 70 Hz · Linkwitz-Riley

Illustrative high-pass and low-pass filter response. This does not show the complete loudspeaker response, room coverage or all DSP processing.

Up to 100 stored presets via ControlBASS

Manage, name, and recall: all over Ethernet.

Select a preset

Start here, then listen and adjust on site. Relative levels, placement, the room and your speaker combination affect the result.

Linkwitz-Riley low-pass: try tops with an LR high-pass at the same frequency or higher. Relative levels can shift the acoustic crossover; listen and adjust on site.

Presets set up for one job. The tag on each one says which; pick one to see what it does.

Filter details and terminology

Low-cut (high-pass): Gradually reduces output toward lower frequencies. The response is already reduced at its cutoff; it does not stop abruptly there.
Upper crossover (low-pass): Gradually reduces output toward higher frequencies. Subwoofer and top responses overlap around the crossover.
Linkwitz-Riley (LR): A recommended starting point for the sub/top crossover. For a top's LR high-pass, try a sub's LR low-pass at the same frequency or lower. For a sub's LR low-pass, try a top's LR high-pass at the same frequency or higher. Verify the combination on site.
Butterworth (BW): A maximally flat passband with less attenuation around the cutoff than a Linkwitz-Riley filter of the same order. Lower-frequency BW high-pass presets are useful for full-range bass extension. Start with LR presets for a sub/top crossover.

PRESET 01: Cardioid · rear-facing cabinet

Reduce bass behind the system.

Arrange the cabinets.

Start with BASSBOSS’s recommended two-forward, one-rear configuration and the model’s setup guidance.

Set the rear-facing cabinet.

Select the appropriate cardioid preset on that cabinet. Use the appropriate forward-facing presets on the other cabinets.

Check the result.

Listen and measure in front of and behind the system, then adjust the setup as needed.

VS21-MK3

Built forthese gigs.

Use VS21-MK3 for

Probably not the move for

In Action.

Sweet and strong,packs a wallop.

Horn punch, vented depth.

Sweet and strong,packs a wallop.

Horn punch, vented depth.

You really can't have too many. 😉

Five bodyguards, zero drama.

Warning: BASSBOSS is addictive.

Save your presets for max impact.

Rolls right through the weather.

Get Deep.

VS21-MK3

We got your bottom.

You're covered.

Free is good.

Love your rig.

Gets better + better.

We get it!

Outfit your rig.

VS21 Vertical Wheel Cart

VS21 Horizontal Wheel Cart

VS21 Cover

Specs + Resources

Acoustical6 specs−

Amplifier / DSP6 specs+

Connections8 specs+

Physical10 specs+

Gallery+

Videos+

Docs+

FAQ+

From the Family

That's what they said.

Plan Your System.

Compare Subs Line

Subs to Tops Ratios.

Popular Systems.

System Match

SPL vs Distance

How Low Can You Go?

PredictBASS

ControlBASS + Presets

The All NewControlBASS

Explore the factory presets

VS21-MK3

Built forthese gigs.

Use VS21-MK3 for

Probably not the move for

In Action.

Sweet and strong,packs a wallop.

Horn punch, vented depth.

Sweet and strong,packs a wallop.

Horn punch, vented depth.

You really can't have too many. 😉

Five bodyguards, zero drama.

Warning: BASSBOSS is addictive.

Save your presets for max impact.

Rolls right through the weather.

Get Deep.

VS21-MK3

We got your bottom.

You're covered.

Free is good.

Love your rig.

Gets better + better.

We get it!

Outfit your rig.

VS21 Vertical Wheel Cart

VS21 Horizontal Wheel Cart

VS21 Cover

Specs + Resources

Acoustical6 specs−

Amplifier / DSP6 specs+

Connections8 specs+

Physical10 specs+

Gallery+

Built for
these gigs.

Sweet and strong,
packs a wallop.

Sweet and strong,
packs a wallop.

The All New
ControlBASS

Built for
these gigs.

Sweet and strong,
packs a wallop.

Sweet and strong,
packs a wallop.

The All New
ControlBASS