Bowers & Wilkins ISW-4 In-Wall Subwoofer

$1,999.00 inc GST

The Bowers & Wilkins ISW-4 In-Wall Subwoofer has a pair of 200mm long-throw drivers deliver extended bass from a discreet in-wall subwoofer.

It will move large volumes of air needed for high-quality low-frequency output, but is nicely hidden away inside a wall.


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SKU: ISW-4 Categories: , , , , Brand: Bowers & Wilkins EAN: 0714346308989 Brand: GTIN / EAN: 0714346308989


Bowers & Wilkins ISW-4 In-Wall Subwoofer

See nothing, hear everything with the Bowers & Wilkins ISW-4 In-Wall Subwoofer.

Need big sound, slamming bass and audiophile bass extension, but don’t want to see where it comes from? Then the ISW-4 in-wall subwoofer is the product for you. Its two long-throw 200mm drivers allows the ISW-4 to move large volumes of air needed for high-quality low-frequency output, but is nicely hidden away inside a wall.


View Owners Manual >> View Specifications >> View Bowers & Wilkins >>



  • ideal for a discreet home theater or stereo music system
  • dual 8″ hybrid paper/aramid fiber woofers
  • frequency response: 21-200 Hz (±3 dB)
  • impedance: 8 ohms
  • recommended amplification: up to 200 watts
  • designed to install between two 16″ on-center wall studs or ceiling joists
True Sound

There’s nothing quite like experiencing the True Sound of a performance. At Bowers & Wilkins, their dedicated engineers develop and integrate the highest caliber of performance audio technology into the products.

The result allows you to hear music and movies with the striking accuracy and realism of the original recording, with nothing added and nothing taken away.

Requires a separate subwoofer amplifier

This sub needs to be powered with an external subwoofer amplifier, which you’ll connect to your home theatre receiver or pre-amp/processor. You’ll use in-wall speaker wire to connect the Isubwoofer to your amp of choice.



Description In-wall Subwoofer

Technical Specifications

  • Driver size 2 x 8” (200mm)
  • Cone material Paper / Aramid Fibre cone
  • Nominal Impedance 8Ω (minimum 6.3Ω)
  • Power rating 250W
  • Frequency response (-3dB) 25Hz – 222Hz
  • Frequency range (-6dB) 19Hz – 400Hz


  • Baffle dimensions
    • Height: 494mm (19.5in)
    • Width: 264mm (10.4in)
    • Depth: 21mm (0.8in
  • Cut-out size
    • Height: 485mm (19.1in)
    • Width: 255mm (10.0in)
  • Net weight 4kg (14.1lb)
  • Frame/grille finish Semi-matt white (paintable)

Back Box

  • Description Closed-box subwoofer
  • Dimensions
    • Height: 1,406mm (55.4in)
    • Width: 345mm (13.6in)
    • Depth: 86mm (3.4in)


  • MDF Bracing Yes
  • Volume 5L
  • Net weight 6kg (21.2lb)
  • Amplifier (mandatory) Required

Additional information

Weight 6 kg
Dimensions 9.5 × 25.5 × 48.5 cm

Bowers & Wilkins

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