Give your home cinema set-up the bass impact it deserves with DB4S – a powerful, classically styled single driver subwoofer that's a perfect match for the 700 Series.

Aerofoil Cone

The DB4S single driver features an aerofoil cone design – the same technology used in B&W's flagship 800 Series Diamond speakers – for flawlessly accurate and articulate bass performance.

Powerful Amplification

Thanks to 1000w of digital amplification, DB4S delivers all the precision, control, and authority you could ask for.

Digital Preamplifier

DB4S uses a digital preamplifier featuring Dynamic EQ, for optimized audio performance across the available frequency range.

Control App 

Adjust calibration and correction easily using the DB4S dedicated smartphone app.