Give your home theater 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.

For bass you can feel

With a mighty 1000 watts of digital amplification, DB4S delivers all the visceral rumble and punch you need to bring cinema sound to life.

Nimble and powerful

Solid, dramatic bass is delivered through the rigidity and lightness of the uniquely-shaped, variable thickness Aerofoil™ cone.

Powerful amplification

Thanks to 1000 watts 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 dedicated DB4S smartphone app.


DimensionsHeight 377mm (14.8 in) including feet Width 360mm (14.1 in) Depth 368mm (14.5 in)
Net weight26kg (57.3 lb)
Technical features1000W Class D Hypex amplifier 1x ø250mm (10 in) Aerofoil™ cone bass Digital preamplifier with Dynamic EQ App-based set-up and BT-LE control
DescriptionActive closed-box subwoofer system
Drive units1x ø250mm (10 in) Aerofoil™ cone bass
Frequency range-6dB at 8.5Hz - 500Hz
Frequency response10Hz - 350 Hz -3dB (centered on level at 100Hz)
Power consumption1/8th of rated power 195W Standby <0.5W
Max Power output1000W
Inputs2 x XLR 2 x RCA 2 x 3.5mm 12V trigger RS-232 - 9-pin D connector
Input impedanceRCA: 10 kOhm XLR: 20 kOhm
Signal / Noise82 dB
Cabinet finishesGloss Black Satin White Rosenut
Grille finishesBlack Grey Black