Dynaudio 9S Powered Studio Subwoofer

300 W powered subwoofer with 9.5" MSP long-throw woofer in a sealed enclosure with double front baffle
Dynaudio 9S Powered Studio Subwoofer
Dynaudio 9S Powered Studio Subwoofer Dynaudio 9S Powered Studio Subwoofer Dynaudio 9S Powered Studio Subwoofer


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The Dynaudio 9S Powered Studio Subwoofer is designed to complement LYD and other Dynaudio Pro studio monitors, including the classic BM range.

Studio-quality components and construction make the 9S, with its double front baffle and brand-new 9.5 in long-throw driver, the ideal subwoofer for your mixing and mastering projects. Dynaudio made it a priority to make the 9S compact while ensuring that you get the utmost sonic accuracy. In terms of size, it resembles the BM 9S II that it replaces, but when it comes to performance, it’s actually more comparable to the larger BM 14S II.

The 9S will expand any studio monitor setup regardless of whether you’re working in stereo or surround. Its massive yet tight low-end takes the burden off your monitors – letting them focus on delivering the frequency range above 50 - 150 Hz, depending on how you set the crossover filter.

A long-throw driver ensures the necessary movement to reproduce super low-end frequencies all the way down to 22 Hz in great detail. Running the show is a 300 W Class D amplifier module that significantly outperforms the previous BM 9S II.


  • 300-watt state-of-the-art Class D amplifier module
  • 9.5 in long-throw MSP woofer for accurate low-end frequency reproduction
  • 22 - 175 Hz frequency range
  • Sealed, black-vinyl cabinet
  • 37 mm front baffle
  • Master/Slave feature for daisy-chaining multiple subwoofers
  • Adjustable lowpass filter to set the perfect crossover frequency
  • SAT output with defeatable high-pass filter

Additional Information

Condition New
Width 266 mm
Depth 320 mm
Height 276 mm
Unit Weight 23.1 lb
Active or Passive Active
driver_sizes 9.5" woofer
Number of Speakers Single
Input Connectors Analog XLR
Output Connectors Analog XLR
Amp Wattage 300 W Class D
Frequency Range 22 Hz - 175 kHz
Max. SPL 106 dB

This sub was perfect for my home system in several ways and has performed flawlessly. I paired it with my Dynaudio Confidence C1 Mk II's with which it integrates seamlessly allowing me to run my system fully balanced from source to power amp outputs. The bass from the 9S is deeper, tighter and more musical than the significantly larger sub it replaced.

By Andrew L on December 25, 2018

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