Features of Bowers & Wilkins ISW-4 In-Wall Subwoofer

Compact In-Wall Design
The ISW-4 is designed to be installed within a wall, allowing for discreet integration into home theaters or audio setups. It provides powerful bass performance without occupying floor space, making it ideal for minimalist environments.

Dual 200mm (8-inch) Drivers
Equipped with two long-throw 200mm (8-inch) paper/Aramid fiber cone drivers, the ISW-4 delivers deep, controlled, and punchy bass. These cones are designed to minimize distortion even at high output levels.

High Power Handling
The subwoofer is capable of handling significant power, supporting the robust Bowers & Wilkins SA250 Mk2 amplifier, which provides up to 250 watts of Class D amplification. This ensures dynamic and impactful bass performance.

Closed-Box Acoustic Design
Its closed-box (sealed) design helps deliver tight and accurate bass response. This design also aids in reducing sound leakage into adjacent rooms, enhancing sound isolation in home theater setups.

Versatile Mounting and Installation
The ISW-4 is designed for easy in-wall installation and comes with a rigid back box (BB IW4) to simplify mounting while ensuring optimal acoustic performance. It can be installed vertically or horizontally to suit room layouts.

Custom-Matched Amplifier Compatibility
For peak performance, it pairs with the SA250 Mk2 amplifier, which features equalization tailored specifically for the ISW-4. This ensures seamless integration and superior sound output.

Ideal for Home Theater Systems
The ISW-4 is perfect for enhancing low-frequency effects in a home cinema system. It blends well with other Bowers & Wilkins CI series speakers to create an immersive, high-fidelity surround sound experience.

Premium Build Quality
Like all Bowers & Wilkins products, the ISW-4 is crafted with high-quality materials, ensuring durability, reliable performance, and audio excellence.

Features of Bowers & Wilkins SA250MK2 AMPLIFIER

High-Power Output
The SA250 Mk2 delivers a robust 250 watts of Class D amplification, ensuring powerful and controlled bass performance. This makes it an ideal companion for passive subwoofers like the Bowers & Wilkins ISW-4.

Compact Design
Despite its power, the SA250 Mk2 features a compact 1U rack-mountable chassis. This slim profile allows for flexible installation in AV racks or discrete setups, perfect for home theaters and custom installations.

Dedicated Compatibility
It is specifically engineered to drive Bowers & Wilkins custom installation subwoofers, especially the ISW-4. Its optimized power output and EQ settings ensure seamless integration and performance.

Flexible EQ Settings
The amplifier includes EQ switch options tailored for different subwoofer models and installation types. This allows fine-tuning for in-wall, in-room, or cabinet setups to maintain accurate bass response.

Signal Sensing & Auto On/Off
The SA250 Mk2 includes signal-sensing technology that automatically powers the unit on or off, conserving energy and offering convenience.

Thermal Protection & Reliability
Advanced thermal management ensures stable operation even under heavy load. The amplifier includes protection circuits to guard against overheating and electrical faults.

Low Noise Operation
Designed with low-noise circuitry, the SA250 Mk2 maintains clean signal output without introducing unwanted hum or distortion into your audio system.

Balanced and Unbalanced Inputs
It offers both RCA and XLR inputs, providing flexibility in connection with a wide range of home theater processors or AV receivers.

Custom Installation Friendly
The 1U rack-mount height and rear-panel controls make it easy for integrators to install and configure the amplifier in professional AV setups.

Specs of Bowers & Wilkins ISW-4 SUBWOOFER

Driver Configuration: Dual 200mm (8-inch) long-throw paper/Kevlar® cone woofers.

Frequency Range: -6dB at 17Hz to 290Hz (adjustable via EQ setting A).

Frequency Response: ±3dB from 21Hz to 200Hz (adjustable via EQ setting A).

Bass Extension Settings:

• Position A: -6dB at 17Hz
• Position B: -6dB at 21Hz
• Position C: -6dB at 24Hz

Power Handling: 200W into 8Ω (minimum impedance 6.3Ω)

Amplifier Requirement: Requires the SA250 Mk2, a 250W Class D rack-mount amplifier with built-in subwoofer equalization (sold separately) .

Dimensions (H × W × D): 524mm × 294mm × 93mm (20.6" × 11.6" × 3.7"); depth with grille: 114mm (4.5") 

Cut-Out Size (H × W): 485mm × 255mm (19.9" × 10") 

Net Weight: 6.4 kg (14.1 lbs)

Finish: Semi-matt white frame and grille, suitable for custom painting to match room décor

Specs of Bowers & Wilkins SA250MK2 AMPLIFIER

Power Output: Delivers 250 watts of power, suitable for driving in-wall subwoofers like the ISW-3 and ISW-4

Amplifier Class: Utilizes a Class D amplifier design, ensuring efficient power usage and minimal heat generation

Frequency Response: Offers a frequency range of 40 Hz to 140 Hz, providing deep bass reproduction

Signal-to-Noise Ratio (SNR): Features an SNR of over 80 dB, ensuring clear and distortion-free audio output

Input Connectivity:

• 2 x RCA Phono sockets (line in)
• 1 x XLR socket (line in)
• 3.5 mm jack for 12V trigger (on/standby)

Output Connectivity:

2 x RCA Phono sockets (link out)

• 1 x XLR socket (link out)
• 1 x Neutrik Speakon 4-pole speaker socket
• 2 x pairs of binding posts

Controls and Adjustments:

• Rotary volume control
• Rotary low-pass filter frequency control (40 Hz – 140 Hz)
• Low-pass filter defeat switch
• Phase switch (0°/180°)
• Bass extension 3-position switch
• Movie/music EQ 2-position switch

Dimensions: Measures 100 mm (height) x 430 mm (width) x 322 mm (depth), making it suitable for rack-mount installations

Weight: Weighs approximately 5.4 kg, facilitating easy integration into various setups

Power Consumption:

• Typical consumption: 95 W
• Standby mode: 1 W

This amplifier is specifically designed to complement Bowers & Wilkins in-wall subwoofers, providing tailored equalization and robust performance for custom installations.​

WARRANTY

2 Year warranty on amplifier

5 Year warranty on the subwoofer

DELIVERY

Free Delivery (Australia Wide)

3 working days processing period