Give your home cinema set-up the bass impact it deserves with DB4S – a powerful, classically styled single driver subwoofer that’s a perfect match for the 700 Series.

  • Nimble and powerful

    Solid, dramatic bass is delivered through the rigidity and lightness of the uniquely-shaped, variable thickness Aerofoil™ cone.

    Powerful amplification

    Thanks to 1000w of digital amplification, DB4S delivers all the precision, control and authority you could ask for.

    Digital preamplifier

    DB4S uses a digital preamplifier featuring Dynamic EQ, for optimised audio performance across the available frequency range.

    Control app

    Adjust calibration and correction easily using DB4S dedicated smartphone app.


    • Size & weight

      DimensionsHeight 377mm (14.8 in) including feet
      Width 360mm (14.1 in)
      Depth 368mm (14.5 in)
      Net weight26kg (57.3 lb)

      Technical details

      Technical features1000W Class D Hypex amplifier
      1x ø250mm (10 in) Aerofoil™ cone bass
      Digital preamplifier with Dynamic EQ
      App-based set-up and BT-LE control
      DescriptionActive closed-box subwoofer system
      Drive units1x ø250mm (10 in) Aerofoil™ cone bass
      Frequency range-6dB at 8.5Hz – 500Hz
      Frequency response10Hz – 350 Hz -3dB (centered on level at 100Hz)
      Power consumption1/8th of rated power 195W
      Standby <0.5W
      Max power output1000W
      Inputs2 x XLR
      2 x RCA
      2 x 3.5mm 12V trigger
      RS-232 – 9-pin D connector
      Input impedanceRCA: 10 kOhm
      XLR: 20 kOhm
      Signal / Noise82 dB


      Cabinet finishesGloss Black
      Satin White
      Grille finishesBlack

Bowers & Wilkins


700 series S3

Product Type



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