BM9S mkII Subwoofer

Compact Active Sub - 1 x 10", 200 Watts

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The Dynaudio Acoustics BM9S Active Subwoofer is a perfect match for Dynaudio's BM Series monitors - particularly the BM5A series.

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The Dynaudio tradition continues in the new II-series subs, delivering Dynaudio's premium, professional sound quality and performance. Dynaudio Professional II-series precision subwoofers are made in Denmark using hand-crafted drivers that have made Dynaudio the industry standard in studios the world over.

The BM9S II is specifically designed to complement BM Compact mkIII and BM5 mkIII monitors, adding extended bass in smaller mixing and recording environments.




  • 10" woofer with pure aluminum voice coil. 200W @ 4 ohm
  • Phase adjustment in 0° / 180°; Auto on/off, power LED;
  • Selectable LFE or slave mode
  • Discrete LFE input, slave output for linking
  • Adjustment of low-pass corner frequencies (50-150 hz)
  • Frequency response of 29 Hz to 250 hz 
  • SAT/SUB high-pass adjustment: Flat, 60 Hz, 80 Hz



Technical Specifications

  • Model BM9S II
  • System Precision Subwoofer
  • Frequency Response 29 Hz to 250 Hz
  • Inputs LFE/Slave, SAT/SUB, XLR right/left full bandwidth
  • XLR Input impedance + branch 20 kOhm, – branch 10 kOhm
  • Sensitivity 75 mVRMS to 5 VRMS, adjustable
  • Max. Input voltage 10 VRMS
  • Outputs Slave, SAT/SUB, XLR right/left, High-pass filtered
  • XLR Output impedance 100 Ohm (each branch)
  • XLR Pin-out 1: 0 / 2: + / 3: –
  • Mode selector LFE, Slave (Phase and volume controls are bypassed in slave mode
  • SAT High-pass Flat, 60 Hz, 80 Hz
  • SUB Low-pass 50 Hz to 150 Hz
  • Auto ON/OFF Automatic ON (LED green) when signal is detected at input Automatic mute (LED red) when no signal is detected for 15 to 20 min.
  • Amplifier power 200 W, 4 Ohm
  • Power consumption <16 W Standby, 325 W Max.
  • Woofer 240 mm/10” One piece molded MSP cone (Magnesium Silicate Polymer), 100 mm/4”, Pure aluminum voice coil
  • Weight 8,8 kg. / 19.4 lbs
  • Dimensions (WxHxL) 290 x 290 x 300 mm / 11.4” x 11.4” x 11.8”
  • (Specs can change without notice)






















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