Main Content

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

Quick Specs
  • Color : Black
  • Amplifier Type : Class D
  • Connectivity : Spring Clips
  • Frequency Response : 3dB 21Hz - 200Hz (+/- 3dB)
  • Enclosure Material : MDF
What We Offer
Free Shipping on most orders over $35
Low Price Guarantee
Free Tech Support with every purchase
Abt Model: ISW4 | UPC: 714346308989
In Stock
Your Price: $898.98
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.
View Map
Why I Bought This
See all buyer comments

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

Downloadable Resources

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 Dual 8" Black In-Wall Subwoofer ISW4 from Abt Electronics

  • is an authorized dealer.
  • The Bowers & Wilkins Dual 8" Black In-Wall Subwoofer ISW4 is Brand New.


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


Check here if you only want to add the selected accessories
to the cart and click the "add to cart" button for this item.


Save more when you shop outlet items.
This outlet item is not available for click and buy online.
Outlet items are currently available for local customers only. For more information or to purchase, please contact an Abt sales specialist: