1723 Subwoofer 2S

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The 1723 Subwoofer 2S takes everything that makes the 1S special — sealed design, app-controlled DSP, and compact authority — and doubles down. With two opposing 13.8″ drivers in a force-canceling configuration, it delivers massive output with near-total elimination of mechanical vibration. More performance. Less resonance. All control.

If you want deeper bass, cleaner dynamics, and the physicality of dual drivers without the footprint of a larger ported model, this is your weapon.

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FORCE. BALANCE.
FOCUS

This isn’t about more drivers for the sake of it. The 2S is engineered to deliver reference bass in rooms where clean extension, tight integration, and musical accuracy matter most. By mounting the drivers in a dual back-to-back configuration, distortion is cut in half — even at high sound pressure levels (SPL).

The result? Deep, dense, powerful bass without the blur. It’s ideal for music-first systems, cinema rooms, or anyone who values low-end energy without added distortion.

ENGINEERED TO BE
UNMOVED

The 2S is built from thick CNC-machined HDF and internally braced to keep resonance in check. Its dual drivers cancel mechanical force internally, meaning the cabinet stays steady — even when output isn’t.

It comes finished in hand-painted Satin Black or Satin White, with rubber-damped feet for added isolation. Every element reflects our Norwegian design values — focused, purposeful, and made to endure. For serious listeners with sensitive spaces this is precision bass with no downside.

ENGINEERING 
EXCELLENCE

  • Driver
  • AMPLIFIER
  • ENCLOSURE
  • ISOLATION
  • FINISH

APP-CONTROLLED.
ROOM-READY

The Avalanche 800 IQ amplifier provides 800 watts of clean RMS power, paired with intelligent DSP and full app control for iOS and Android devices. You get phase adjustment, low pass filtering, variable EQ curves, and multi-band parametric EQ — all from the listening position. Whether you’re fine-tuning to your room or switching presets for music vs. film, it’s bass on your terms.

BUILD YOUR
LOW-END FOUNDATION

The 1S makes an ideal match for 1723 Tower or Monitor setups when sealed performance is the right call — whether for room acoustics, placement needs, or personal preference. Run a single-driver 1S for tight, articulate bass reinforcement that won’t dominate your system — or use two for added balance, output, and symmetry.

It’s not the most extreme subwoofer we make — but for many listeners, it’s the most complete. Everything you need. Nothing you don’t.

a word from our customers

Steve

“BEAUTY!!! Immersive, visceral, impactful, clean tight bass!”

Chris M

“The whole process from the online store to my 1723 2s being delivered was quick and smooth. Thanks for the advice and tips over the phone during this time”

Michael C

“Amazing output for its size, app control is very useful”

This speaker is for you if

low-distortion

If you desire flagship, dual-driver model with unparalleled precision and low distortion.

floor-plan

If your room spans up to 40m².

toggle-between-two-modes

If you prefer App-guided setup and integration.

dimensions and tech specs

Dimensions (H/W/D)

53 x 42 x 50 cm
(20.9 x 16.5 x 19.7 in)

Weight

41.4 kg
(91.6 lbs)

Enclosure

Sealed

Enclosure material

High Density Fiberboard (HDF)

Break-in for optimal performance

50 hours

Included

Power cable. Manual.

handbook

Download
Woofer

2 x 13.8″

Frequency response
EQ1 17Hz-200Hz (+/-3dB)
EQ2 24Hz-200Hz (+/-3dB)
EQ3 33Hz-200Hz (+/-3dB)

handbook

Download

Frequency

Frequency response does not reflect maximum output but shows its true response in a anechoic chamber. Typically you will see an elevated response in the bass response below 40Hz in room due to room gain, which can add around 6dB pr. octave under 40Hz depending on the size of your room.

CEA 2010

CEA-2010 is measured at 2m distance, following current guidelines. CEA-2010 measurements should be presented in 1m Peak measurements currently, although many are still using 2m RMS, so we include these as well.

Please note that our vented design is extremely difficult to accurately measure as the port and driver are on different planes. We are suffering some output on CEA-2010 measurements for this reason.

BUY DIRECT

We’re audio enthusiasts, just like you. Your concerns are ours, and we’re here to assist every step of the way. 

Buying directly from Arendal Sound ensures you get the utmost value for your investment. You communicate directly with our industry-leading customer experience specialists for a fast, smooth, and accurate response. 

No middlemen, minimal shipping. 

And with a built-in 60-day audition period, we promise you a risk-free purchasing experience with no hidden catches. Experience it for yourself.