Overview

The Bowers & Wilkins DB4S is a high-performance active subwoofer that brings studio-grade low-frequency authority and pristine acoustic control to premium home audio systems. Specifically engineered to complement the reference-tier 700 Series speakers, this classically styled, single-driver subwoofer packs an astonishing 1000 watts of digital power into a rigid, space-conscious sealed enclosure. By utilizing a cutting-edge 10-inch Aerofoil™ cone driver alongside a smart digital preamplifier, the DB4S delivers flawlessly accurate, visceral rumble and fast musical agility that breathes life into any entertainment space.

Simcoe Audio Video Insight

For executive media rooms, custom home cinemas, and luxury lakeside cottages across Central Ontario, managing deep bass frequencies without muddying the architectural acoustic environment can be incredibly demanding. The DB4S represents the perfect solution for high-end installations. Unlike ordinary consumer-grade subwoofers that depend on hollow air ports to create volume, the DB4S relies on a heavy-duty, completely sealed acoustic enclosure coupled with a massive Hypex Class D amplifier. This setup enables it to reach an subterranean 10Hz limit with lightning-fast control. Because it uses the exact same variable-thickness Aerofoil cone technology found in the ultra-luxury 800 Series Diamond studio monitors, notes never smear or linger. Instead, the bass hits your seating area with absolute physical authority, blending effortlessly with premium tower speakers to map a perfectly cohesive, high-fidelity sound stage.

Best for the Bowers & Wilkins DB4S: download the dedicated Bowers & Wilkins DB Subwoofers smartphone app on your mobile device to utilize the built-in Room EQ calibration feature, which uses your phone's microphone to automatically analyze and correct problematic low-frequency room reflections.

More Details

Why It Wins

• 10-Inch Aerofoil™ Bass Driver: Employs a variable-thickness cone geometry derived from the world-renowned 800 Series Diamond monitors, providing immense structural rigidity to prevent distortion at extreme volumes.
• Mighty 1000W Hypex Class D Amplifier: Packs a high-current digital amplification engine that supplies tremendous structural headroom for explosive cinema transients and effortless musical swing.
• Advanced App-Driven Digital Preamplifier: Utilizes an intelligent onboard DSP processor featuring Dynamic EQ, letting users handle setup, custom crossovers, and acoustic room correction right from a smartphone via Bluetooth.

What Makes It Different

While standard mid-range subwoofers rely on manual rear knobs that require guessing your room's crossover parameters, the DB4S acts as a highly intelligent acoustic computer. Its internal digital preamplifier applies real-time Dynamic EQ to continuously monitor the incoming signal, maximizing output efficiency while protecting the driver from mechanical damage. Rather than forcing you to squeeze behind heavy furniture to make adjustments, its built-in Bluetooth Low Energy (BT-LE) interface links directly to your mobile app. This lets you calibrate a custom five-band parametric equalizer or swap between optimized movie and music presets from the comfort of your primary listening seat.

Technical Highlights

• Pro-Grade Balanced XLR Inputs: Outfitted with dual balanced XLR and dual unbalanced RCA stereo inputs, allowing safe, noise-free connection to premium high-end preamps and professional AV processors.
• Flexible Home Automation Integration: Includes an RS-232 9-pin serial control interface alongside dual 3.5mm 12V trigger jacks, letting it integrate seamlessly into whole-home smart control systems.
• Luxury Premium Cabinet Finishes: Available in hand-polished Gloss Black, contemporary Satin White, or rich natural Rosenut veneers to effortlessly match high-end interior aesthetics.

Buyers Guide

Who This Is For

• The Custom Theater Enthusiast: Home cinema builders seeking visceral, reference-level low-frequency impact to ground multi-channel speaker configurations.
• The Reference-Grade Stereo Purist: Dedicated audiophiles wanting a fast, hyper-analytical sub to extend the low-frequency octaves of high-end 700 Series bookshelf or floorstanding monitors.
• The Smart Home Technology Devotee: System integrators looking for a high-output subwoofer that supports advanced software-driven calibration and unified remote automation control.

Ideal Use Case

• Premium Two-Channel and Multi-Channel Sound Stages: Perfectly voice-matched to pair alongside Bowers & Wilkins 700 Series layouts to build an ultra-linear sound field.
• Architecturally Demanding Rooms: Exceptional for open-concept spaces or rooms with hard surfaces where advanced app-based digital room correction is necessary to defeat bass bloat.

What To Pair It With

• Bowers & Wilkins 700 Series Loudspeakers: Combine with models like the 702 S3 towers or 705 S3 stand-mount monitors to create a flawless, seamless acoustic handoff.
• Balanced XLR Interconnect Cables: Use high-quality shielded XLR cables to route signals from your processor to block external electrical interference across longer wire runs.
• Included Heavy-Duty Isolation Spikes: Utilize the supplied heavy M6 floor spikes to anchor the 57-pound cabinet firmly into thick carpets, or stick with the isolation rubber dampening pads on hardwood flooring panels.

Alternative Options

The Bowers & Wilkins DB4S provides a masterclass in single-driver speed, muscle, and digital room tuning. However, if you are working with tight room dimensions or a modest budget, the mid-sized Bowers & Wilkins ASW610 offers a solid 10-inch sealed active footprint that balances well with entry-level systems. On the other hand, if you are building an elite, large-scale flagship cinema and want the absolute ultimate in physical air displacement, stepping up to the dual-driver dual-opposed setups found in the Bowers & Wilkins DB2D or the reference-grade DB1D unlocks unparalleled low-frequency authority.