Bowers & Wilkins ISW-4 2 x 8" In Wall Subwoofer (FP28646) Single unit

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ISW-4: In-Wall Subwoofers

Subwoofer Series
Bass is a vital element of sound, which is why we have developed a range of specially designed in-wall subwoofers for custom installation purposes.

See nothing, hear everything
Need big sound, slamming bass and audiophile bass extension, but don’t want to see where it comes from? Then the new 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. Powered by a separate audiophile-standard 250W Class D amplifier the SA250 Mk2, the system keeps its cool even when the music movie action is whipping up a storm.

Description: In-wall subwoofer system with external rackmount amplifier
Drive Units: 2 x 200mm (8 in) Paper/Aramid Fibre cone
Frequency Range: -6dB at 17Hz and 290Hz adjustable (EQ at A)
Frequency Response: ±3dB 21Hz - 200Hz adjustable (EQ at A)
Bass Extension: -6dB at 17Hz (position A)
-6dB at 21Hz (position B)
-6dB at 24Hz (position C)
Power Handling: 200W 8Ω (minimum 6.3Ω)
Dimensions: Height: 494mm
Width: 264mm
Cut-out Size: Height: 485mm
Width: 255mm
Net Weight: 6.4kg
Finish Frame/Grille: Semi-matt white suitable for customising or pre-painting
Accessories: Pre-mount kit for new construction
Back Box:
Box Dimensions: Height: 1406mm
Width: 345mm
Depth: 85mm
Box Net Weight: 9.6kg
Manufacturer's Warranty*: 5 years
Faulty From New*: (Within 14 Days Of Purchase): Return to AWE for assessment.
Please complete this online Returns Form
After 14 Days Of Purchase*:
(Within The Manufacturer's Warranty):
Return to AWE for assessment.
Please complete this online Form
Post-Warranty Service and Repair: Please contact an authorised service centre: Sontec or Sound System Technology
*Terms & Conditions: For further information regarding AWE's returns procedures, please see chapters 7 & 8 in our Terms & Conditions


  • Dual driver subwoofer
  • Heavily braced backbox
  • requires CDA-4D
  • Back box not included