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Bowers and Wilkins BBISW4

B&W Back Box for ISW-4 Passive Subwoofer

  • In Stock
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  • Features
  • Specifications
  • Product Wiki
  • Extended Warranty


Back Box recessed ceiling / wall for the ISW-4 model.

What's included in the box

  • The BB-ISW-4 MDF backbox prevents wall shake and cabinet distortions that plague other designs.
  • Back-box to optimize cabinet volume for the drivers and reduce acoustic bleed-through to other rooms.
  • Use of the BB-ISW-4 backbox is strongly recommended.


  • Description: Installation Subwoofermodul for external Subwooferverstärker
  • Chassis: 2 x 200 mm paper / Kevlar membrane
  • Frequency range: 6 DB 17Hz and 290Hz adjustable (EQ on A)
  • Frequency response: ±3dB 21Hz - 200 Hz adjustable (EQ on A)
  • Bass extension: 6 DB at 17Hz (location A)
        -6 DB at 21Hz (position B)
        -6 DB at 24Hz (position C)
  • Performance and impedance: 200W / 8o (minimum 6.3Ω)
  • Frame size: 524 mm
  • Frame width: 294 mm
  • Depth: 93 mm
  • Deep with Grill: 114 mm
  • Installation opening
  • Installation opening height: 485 mm
  • Installation opening width: 255 mm
  • Weight: 6.4kg
  • Framework and Grill: white (painting grade)
  • Accessories: optional pre-Mount Kit
Back box
  • Box: Height: 1406mm
  • Width: 345 mm
  • Depth: 86 mm
  • Weight: 9.6kg
  • Material: MDF

Product Wiki

Extended Warranty



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