Dynaudio Acoustics 18S True Bass Dual 9.5″ Active Subwoofer (500W) (Open Box)


  • Dual 9.5″ MSP+ Hybrid Drive Woofers
  • Class-D 500W Amplifier
  • Sealed Enclosure
  • Frequency Range: 16 to 230 Hz

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Dynaudio Acoustics 18S Overview

The Dynaudio Acoustics 18S True Bass is a dual 9.5″ active subwoofer with advanced DSP designed to work with MB Classic and LYD monitors to create a powerful three-way setup for mixing and mastering. The powerful onboard Class-D amplifier supplies 500W to each of the MSP+ Hybrid Drive woofers, which offer a frequency range of 16 to 230 Hz with a max SPL of 110 dB.

To achieve an accurate match between Dynaudio’s professional monitors and the 18S, an acoustic profile was created by analyzing each high-end speaker and producing a custom performance map that is stored within the subwoofer’s DSP. The back panel of the subwoofer also offers a USB input for trouble shooting and loading new custom performance maps, making the 18S future proof. Should you have non-Dynaudio Acoustic monitors, a generic profile can be selected. Additional features of the 18S include the ability to set a time delay to ensure the sub and speakers are working perfectly in sync, while full 3-band parametric EQs are available to easily defeat room modes that could affect the accuracy of your setup.

The 18S utilizes an updated design to its subwoofer, which is made from aluminum rather than their standard magnesium silicate polymer material. It has paper backing and an MSP dust-cap on the front, which creates a balance between stiffness, lightness, and damping. The MSP+ Hybrid Drive woofers are designed specifically for subwoofers, allowing you to mix and master with accuracy and deliver tracks that translate to any playback system.


  • 300W Class-D amplifier module
  • 9.5″ long-throw MSP woofer for accurate low-end frequency reproduction
  • Frequency Range: 22 to 175 Hz
  • Sealed, black-vinyl cabinet
  • 1.5″ front baffle
  • Master/Slave feature for daisy-chaining multiple subwoofers
  • Adjustable low-pass filter to set the crossover frequency
  • SAT output with defeatable high-pass filter
  • Trigger Input: Enables wired remote control of subwoofer standby and operational modes in automated systems

Powered: Yes Speaker Size: 2 x 9.5" long-throw woofers Driver Type: Magnesium Silicate Polymer+ Hybrid cone Total Power : 500W Frequency Range: 16Hz-230Hz Crossover Frequency: 50Hz-150Hz Input Types: 2 x XLR (L/R), 1 x Dual RCA Stereo Output Types: 2 x XLR (L/R), 1 x Dual RCA Stereo USB: 1 x Type A (service) Other I/O: 1 x 1/8" (trigger in) Height: 13.1" Width: 18.5" Depth: 10.6" Weight: 45.2 lbs. Manufacturer Part Number: 962132


Dynaudio Acoustics 18S True Bass Dual 9.5" Active Subwoofer (500W) Power Cord Limited 2-Year Warranty


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