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
DB4S’ single driver features an aerofoil cone design – the same technology used in our 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 optimised audio performance across the available frequency range.
Control app 
Adjust calibration and correction easily using DB4S’ dedicated smartphone app.