ISW4 is a Passive In-wall by Bowers Wilkins with a frequency range of 25-222 Hz. It was released in 2018. It features 2 x 8" Woofer.
Frequency Response
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Bowers Wilkins ISW4 has a Frequency response range of 25-222 Hz. With the help of its 2 x 8-inch driver, the ISW4 can go as low as 25 Hz which doesn't quite offer full range sound (20Hz-2kHZ) but it gets really close.
Here we have a comparison of how ISW4's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Passive In-walls
High Frequency
In-wall Speakers
Among all subwoofers in our database priced under $3,000, these are the 4 Passive In-wall models that can reach deeper bass levels than the Bowers Wilkins ISW4's 25Hz:
On the treble side, with its upper limit of 222 kHz, Bowers Wilkins ISW4 has the highest frequency level among the In-wall speakers in our database.
Bowers Wilkins ISW4 External Dimensions and Weight
Bowers Wilkins ISW4 has external dimensions of (Height x Width x Depth) (1406.5 x 346.1 x 85.7mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Bowers Wilkins ISW4 is approximately 296.6cm2 / 46.0inch2.
Millimetres are hard to picture, so here is the Bowers Wilkins ISW4 drawn to scale next to the Definitive IWSub 1010, the subwoofer our readers compare it with most often.
Size, drawn to scale
Both subwoofers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same floor and pushed back to the same wall, so the bigger one visibly takes more of the room.
Definitive IWSub 1010 needs about 20% more floor area. Bowers Wilkins ISW4 is 902mm taller.
Full comparison: Bowers Wilkins ISW4 vs Definitive IWSub 1010 ›
Find speakers that fit your shelf or alcove →
Recommended Accessories
Here is a list of accessories that we think you may need for the Bowers Wilkins ISW4.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.
| General |
| Brand | Bowers Wilkins |
| Full Model Name | Bowers Wilkins ISW4 |
| Type | Passive In-wall |
| Release Date | 2018 |
| Frequency Response | 25-222 Hz |
Amplifier & Driver |
| Woofer | 2 x 8-inch |
| Controls & Connections |
Physical |
| Dimensions (HxWxD) | 55-3/8" x 13-5/8" x 3-3/8" (1406.5 x 346.1 x 85.7mm) |
| Weight | 9.62 kg (21.2 lbs) |
| Parts Warranty | 5 Years |
| Labor Warranty | 5 Years |