Bowers & Wilkins DB4S Subwoofer - (Each)
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Bowers & Wilkins DB4S Subwoofer - (Each)
Overview
The Bowers & Wilkins DB4S is a powerful, classically styled single-driver subwoofer that B&W calls a perfect match for the 700 Series. It pairs a 10-inch Aerofoil cone, the same drive unit technology found in the 800 Series Diamond, with 1000W of Class D Hypex digital amplification in a closed-box cabinet.
B&W says the digital amplification delivers the visceral rumble and punch to bring cinema sound to life, with precision, control, and authority. The variable-thickness Aerofoil cone gives solid, dramatic bass through its rigidity and lightness, and a digital preamplifier with Dynamic EQ optimises performance across the frequency range.
Set-up, calibration, and correction run through the dedicated B&W smartphone app over Bluetooth LE. Inputs include 2 XLR, 2 RCA, two 12V triggers, and RS-232. B&W rates it at 10Hz to 350Hz (-3dB).
Simcoe Audio Video Insight
The DB4S is the DB Series pick for a 700 Series system, matching it in style while bringing 800 Series Diamond cone technology to the low end. Its RS-232 port and 12V triggers give a control system a way to manage it in a fully integrated home cinema, which is the kind of system we design and install.
More Info
Why the Bowers & Wilkins DB4S Stands Out
1000W Class D Hypex Amplifier
Digital amplification for visceral rumble and punch, with precision, control, and authority.
10-Inch Aerofoil Cone
The same drive unit technology found in the 800 Series Diamond.
Closed-Box Design
A single 10-inch driver in a classically styled closed-box cabinet.
Dynamic EQ Digital Preamplifier
Optimised audio performance across the available frequency range.
App Calibration over Bluetooth LE
Adjust calibration and correction from the dedicated smartphone app.
XLR, RCA, 12V Trigger, and RS-232
Two XLR, two RCA, two 12V triggers, and a 9-pin RS-232 port.
Buyer's Guide
Who It's For
- The 700 Series Owner: Wants the subwoofer B&W calls a perfect match for those speakers.
- The Home Cinema Builder: Wants a single, classically styled subwoofer with real impact.
- The Integrated Home: Wants a subwoofer that a control system can manage over RS-232.
How It Compares
The DB4S uses one 10-inch driver in a closed box, while the DB3D uses two 8-inch drivers back to back in a balanced configuration. Both run on a 1000W Class D Hypex amplifier and share the 10Hz to 350Hz response.
Bowers & Wilkins DB4S Subwoofer - (Each) Specifications
| General Information | |
|---|---|
| Model | Bowers & Wilkins DB4S |
| Brand | Bowers & Wilkins |
| Product Type | Active closed-box subwoofer (each) |
| Driver & Amplifier | |
| Drive Unit | 1 x 250 mm (10 in) Aerofoil cone, closed box |
| Amplifier | 1000W Class D Hypex |
| Power Consumption | 195W (1/8 rated power); <0.5W standby |
| Processing | Digital preamplifier with Dynamic EQ |
| Set-Up | App-based, Bluetooth LE control |
| Performance | |
| Frequency Response | 10Hz - 350Hz (-3dB, centred on level at 100Hz) |
| Frequency Range | 8.5Hz - 500Hz (-6dB) |
| Signal/Noise | 82dB |
| Input Impedance | RCA 10k ohms; XLR 20k ohms |
| Connections | |
| Inputs | 2 x XLR; 2 x RCA |
| Control | 2 x 3.5 mm 12V trigger; RS-232 (9-pin D) |
| Dimensions & Weight | |
| Height | 377 mm (14.8 in) including feet |
| Width | 360 mm (14.1 in) |
| Depth | 368 mm (14.5 in) |
| Net Weight | 26 kg (57.3 lb) |
| In the Box | Power cable, grille, spike, decoupling and rubber feet |
| Colours Available | Black (black grille); White (grey grille) |
Simcoe Audio Video Installation
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