Bowers & Wilkins Dual 8" Black In-Wall Subwoofer - ISW4

Abt Model: ISW4 | UPC: 714346308989
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Note: This Bowers & Wilkins product is only available for sale in our store and delivery within a 100 mile radius of our Glenview, IL Store.
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Product Details

Bowers & Wilkins Dual 8" Black In-Wall Subwoofer - ISW4 (Sold As Each)

Need big sound, slamming bass and audiophile extension, but don't want to see where it comes from? The ISW-4 in-wall subwoofer is for you. Two long-throw 200mm (8in) drivers allow it to move the large volumes of air needed for high-quality low-frequency output. The speaker is housed in its own sturdy back box for rock-solid stability and minimum sound bleed, and is powered by the SA250 (sold separately), a separate audiophile-standard 250W Class D amplifier.


Drive Units

  • 2 x 200mm (8 in) paper/aramid fiber 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 8 ohms (Minimum 6.3 ohms)

Finish Frame/ Grille

  • Semi-matte white suitable for customizing painting


  • Pre-mount kit for new construction


  • MDF

Approximate Dimensions:

  • Width: 11.6 "
  • Height: 20.6 "
  • Depth: 3.7 "

Cut-Out Dimensions

  • Depth with Grille: 4.5 "
  • Height: 19 "
  • Width: 10 "

Approximate Weight:

  • Unit: 14 lbs
  • Shipping: 20 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer)
    • Five year limited warranty for passive loudspeakers
California customers: Proposition 65 WARNING - learn more
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Key Features
Sold As Each/ 8" Drivers/ High Quality Low-Frequency Output/ 21Hz - 200Hz Frequency Response/ MDF Construction/ Black Finish (SA250 Amplifier Sold Separately)
More reasons to buy the Bowers & Wilkins ISW4 from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Bowers & Wilkins ISW4 is Brand New.
  • The Bowers & Wilkins ISW4 Ships in a Factory Sealed Box.
Amplifier TypeClass D
ConnectivitySpring Clips
Frequency Response3dB 21Hz - 200Hz (+/- 3dB)
Enclosure MaterialMDF
Impedance8 Ohms
Magnetic ShieldingNo
RMS Output Power250W
Speaker TypeSubwoofer
Woofer Size (inches)8
Height (inches)20.6
Width (inches)11.6
Depth (inches)3.7


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