The Bowers & Wilkins DB4S model is the most compact subwoofer in the DB series, which is perfect for building a high-class home theater or stereo system in a small room. Despite its relatively modest dimensions, this "little one" is capable of providing confident, tight, and deep bass.

The Bowers & Wilkins DB4S active subwoofer is housed in a sealed enclosure and features a 10-inch driver with Aerofoil cone, as well as a 1000W Class D amplifier. The subwoofer is equipped with a digital preamplifier with dynamic equalizer, controlled via the app, and operates in the frequency range from 10 to 350 Hz. The finish of the subwoofer is available in the same options as the entire 700 S2 series of speakers.

To control the Bowers & Wilkins DB4S, a special mobile app is used. It completely replaces any manual controls, including the display on the B&W DB4S. Therefore, to use the subwoofer, you need to install the DB Subwoofer Bluetooth app on your smartphone (for iOS or Android).

The app allows you to select the input (RCA or XLR), and connection type (Stereo or LFE). You can also adjust the input signal gain, its equalization (flat, music, movie, or custom), control stereo settings, and automatic power mode. It even includes automatic sound parameter correction based on the room, utilizing the smartphone's built-in microphone. In this case, the subwoofer generates a test signal, and the smartphone must be sequentially placed in seven points in the room.

The Bowers & Wilkins DB4S features two RCA and XLR inputs, two 12-volt trigger connectors, and an RS232 port for external control. Spikes or anti-vibration supports are included for subwoofer installation. The dimensions of the B&W DB4S are 360 x 377 x 368 mm, and it weighs 26 kg. The subwoofer B&W DB4S pairs excellently with the 700 series speakers, as it uses similar lightweight and stiff Aerofoil cones. The Aerofoil cones have varying thickness for increased strength in critical areas, ensuring smooth membrane piston movement. B&W DB4S subwoofer also pairs well with other speaker systems, such as the CM series.

Features:

• 10-inch driver with Aerofoil cone
• Digital preamplifier, Dynamic EQ, Room EQ functions
• 1000W Class D digital amplifier, rigid sealed enclosure
• XLR and RCA inputs, app-controlled settings

Package includes:

• Speaker
• Documentation