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ADAM Audio Sub2100 - Single – No Longer Available

Massive 21.5-inch subwoofer specially designed for large control rooms and studios
MFR# sub2100

Product Description

The Adam Audio Sub2100 is gigantic 21.5-inch subwoofer specially designed for large control rooms and studios. Equipped with a record-breaking 6-inch voice coil, Sub2100 subwoofers offer an extended frequency response down to 18 Hz. With an unparalleled 1200 W PWM amplifier, Sub2100 subwoofers are powerful enough for even the largest control rooms and sound stages.


Sub2100 subwoofers are capable of accurately recreating the lowest frequencies that can be perceived by the human ear, enabling you to make critical mix decisions with confidence. Capable of delivering a linear frequency response all the way down to 18 Hz, 2100 subwoofers are an ideal addition to fairfield reference monitors.

Sub2100 subwoofers deliver distortion-free low end at any volume thanks to a high-efficiency 1200 W PWM amplifier. Capable of achieving levels up to 128 dB SPL with, Sub2100 subwoofers offer unparalleled dynamic range. A massive 21.5-inch woofer with a custom paper diaphragm helps prevent ear fatigue.


Customize Sub2100 subwoofers to suit any studio with an array of adjustable settings. Quickly toggle Sub2100 on or off using an optional footswitch to A/B tracks with and without a sub. Optimize Sub2100’s bass response to compliment your main monitors using a selectable crossover between 50 and 150 Hz. Create a double bass array with the additional sub output, or high-pass satellite speaker outputs for an optimal film mixing setup.


With analog XLR and RCA input, Sub2100 subwoofers offer balanced and unbalanced connections and can even be used in high-fidelity home theater settings. Adam Audio Sub2100 subwoofers come with a two-year manufacturer’s warranty, which can be extended to five years with registration.


  • 21.5" Woofer, 1000 Watts
  • Linear bass reproduction down to 18 Hz
  • Maximum Peak sound pressure in 1 m ≥ 128 dB
  • High efficiency PWM amplifier
  • Special 21.5" woofer with paper diaphragm
  • 150 mm voice coil
  • Additional sub output
  • Upper cut-off frequency is selectable between 50 - 150 HzConnectable high-pass filter for the satellite outputs, which blocks signals below 85 Hz
  • 2 year warranty with optional extension to 3 years with the registration of the product

Product Specifications

Condition New
Active or Passive Active
Monitor Application Sub
Number of Speakers Single

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.