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ADAM Audio Sub2100 21.5 inch Powered Studio Subwoofer

1000W Active Studio Subwoofer with 21.5" Driver
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Item ID: Sub2100
ADAM Audio Sub2100 21.5 inch Powered Studio Subwoofer
Price:$6,999 and 99 cents
Special Financing - Ends Aug 2, 2026. $195/month with 36 month financing*

We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with ADAM Audio. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated May 2026.

Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.
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ADAM Audio Sub2100 21.5 inch Powered Studio Subwoofer
We Can Get It Fast!
Price:$6,999 and 99 cents
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ADAM Audio's Flagship Sub2100 Subwoofer

Designed for the special requirements of large control rooms, the ADAM Audio Sub2100 is a massively powerful subwoofer housed in a bass reflex enclosure tuned for reproducing frequencies down to 18Hz. The Sub2100 houses a huge 21.5" woofer with a gigantic 6" voice coil (the world's largest), driven by a high-efficiency 1000W PWM power amplifier that combines low heat generation with high performance to handle maximum power levels during long sessions. The Sub2100 is capable of reaching a maximum SPL of 128dB in the lowest frequencies that can be perceivable by the human ear. By any measure, the ADAM Audio Sub2100 represents a new benchmark in subwoofer technology.

Breathtaking bass response down to 18Hz

If you've ever heard a loud playback on the main monitors in a world-class studio, it's a revelation. For the uninitiated, the first reaction is one of being overwhelmed. After you've caught your breath, the first thing you marvel at is the incredibly tight and deep bass. With the Sub210's linear frequency response extending down to 18Hz, you feel in your chest cavity the crush of a well-recorded kick drum, the full weight of organ pedal tones, or a fat unison synth bass. To record frequencies this low, you need to be able to hear them. With the ADAM Audio Sub2100, you can.

ADAM Audio: elevating the state of the art

From its 1999 launch in Berlin, ADAM Audio has built a solid reputation among the pro audio cognoscente. Sweetwater knows that a superior speaker system has superior components, and this is one area where the company has a distinct edge. With years of R&D behind each proprietary driver, ADAM Audio's custom driver technology expresses itself in breakthroughs such as their X-ART (eXtended Accelerating Ribbon Technology) tweeter, which is based on a groundbreaking 1960s invention, the Heil Air Motion Transformer — and in fact, was the main impetus for the formation of ADAM Audio. The X-ART tweeter became the key to ADAM's signature transparent, high-definition sound; and the core development of ADAM’s proprietary designs going forward.

Embracing, exploiting, and working with modern materials has allowed ADAM Audio to formulate loudspeaker components that continually elevate the state of the art in studio monitor design. Materials such as rare-earth magnets and high-strength diaphragm foils have increased reliability, enhanced performance, and made possible new driver geometry. As compared with conventional driver technology, Adam drivers deliver optimized radiation characteristics, lower distortion, and higher efficiency. Along with installations in a growing number of top studios, ADAM Audio's monitor range has garnered rave reviews from audio experts and recording engineers worldwide. If you're considering an upgrade to world-class monitoring, you'll be in good company with ADAM Audio monitors.

ADAM Audio Sub2100 Active Studio Subwoofer Features:

  • Linear bass reproduction down to 18Hz
  • Maximum Peak sound pressure in 1 m ≥ 128dB
  • High-efficiency 1000W PWM amplifier
  • Special 21.5" woofer with 6" voice coil
  • Easy manual or automatic (de-)activation
  • Upper cutoff frequency is selectable between 50Hz and 150Hz
  • Switchable highpass filter for satellite outputs, rolls off signal below 85Hz
  • Subwoofer 180º Phase (polarity) reverse switch
  • Analog XLR and RCA inputs and satellite outputs
  • XLR Sub Out for cascading additional subwoofers
  • 2-year warranty; optional extension to 3 years upon product registration

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Tech Specs

  • Powered: Yes
  • Speaker Size: 21.5"
  • Driver Type: Paper Cone
  • Total Power : 1000W RMS
  • Frequency Range: 18Hz-150Hz
  • Crossover Frequency: 50Hz-150Hz
  • Maximum Peak SPL: 128dB @ 1m
  • Input Types: 2 x XLR, 1 x Dual RCA Stereo
  • Output Types: 2 x XLR (satellite out), 1 x XLR (sub out), 1 x Dual RCA Stereo (satellite)
  • Height: 33.5"
  • Width: 23.5"
  • Depth: 28"
  • Weight: 187.4 lbs.
  • Manufacturer Part Number: 14104220

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