Description
Bowers & Wilkins 603 S3 Floor-Standing Speaker
The Bowers & Wilkins 603 S3 is the largest floor-standing speaker in the Performance 600 Series, designed to deliver powerful, detailed and immersive sound in larger rooms and premium home theatre systems. Its three-way architecture combines dedicated bass, midrange and high-frequency drivers to produce a spacious and highly accurate presentation.
The 603 S3 features a 25 mm (1-inch) Titanium Dome™ tweeter incorporating Bowers & Wilkins’ Decoupled Double Dome technology. The tweeter provides smooth, detailed and extended high-frequency reproduction, while the acoustically transparent tweeter grille helps preserve resolution and clarity.
For midrange reproduction, the speaker uses a dedicated 150 mm (6-inch) Continuum™ Cone FST™ midrange driver. The Continuum cone’s composite construction is designed to avoid abrupt transitions in driver behaviour, helping reproduce voices and instruments with a more open, neutral and transparent character.
Low-frequency performance is handled by two 165 mm (6.5-inch) Paper Cone bass drivers. The twin bass drivers provide the 603 S3 with substantial low-frequency authority, allowing it to deliver powerful bass and room-filling scale without relying entirely on a separate subwoofer.
The 603 S3 uses a 3-way vented-box enclosure incorporating Bowers & Wilkins’ Flowport™ technology. The Flowport design helps manage airflow through the cabinet and supports controlled bass performance.
The speaker delivers a 46 Hz–28 kHz frequency response ±3 dB, with a wider -6 dB frequency range extending from approximately 29 Hz to 33 kHz. Its 90 dB sensitivity allows it to achieve substantial output with a suitable amplifier.
The 603 S3 has an 8-ohm nominal impedance with a minimum impedance of approximately 3.0 ohms. Bowers & Wilkins recommends amplification between 30 and 200 watts into 8 ohms for unclipped programme material.
The speaker also benefits from upgraded speaker terminals derived from the 700 Series. Their improved arrangement provides a cleaner signal path between the amplifier and the loudspeaker.
The 603 S3 is designed as a substantial floor-standing speaker, measuring approximately 985 mm high × 190 mm wide × 340 mm deep for the cabinet alone. With the supplied plinth, its height is approximately 1,020 mm and its maximum depth is approximately 402 mm.
With a net weight of approximately 27.5 kg per speaker, the 603 S3 provides a solid platform for its three-way driver arrangement. Available finishes include Black, White and Oak, with Red Cherry offered in selected markets.
The Bowers & Wilkins 603 S3 is an excellent choice for large living rooms, dedicated music rooms, premium stereo systems and home theatre installations. Its combination of powerful twin bass drivers, Continuum™ midrange technology and Titanium Dome™ tweeter makes it particularly well suited to listeners seeking both musical accuracy and cinematic scale.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Bowers & Wilkins |
| Model | 603 S3 |
| Series | Performance 600 Series |
| Product Type | Floor-Standing Speaker |
| Configuration | 3-Way Vented-Box System |
| Tweeter | 1 × 25 mm / 1″ Titanium Dome™ |
| Midrange Driver | 1 × 150 mm / 6″ Continuum™ Cone FST™ |
| Bass Drivers | 2 × 165 mm / 6.5″ Paper Cone |
| Frequency Response | 46 Hz – 28 kHz ±3 dB |
| Frequency Range (-6 dB) | 29 Hz – 33 kHz |
| Sensitivity | 90 dB SPL (2.83 Vrms, 1 m) |
| Nominal Impedance | 8 Ω |
| Minimum Impedance | 3.0 Ω |
| Recommended Amplifier Power | 30 – 200 W into 8 Ω |
| Enclosure Design | 3-Way Vented Box |
| Port Technology | Flowport™ |
| Height | 985 mm Cabinet Only / 1,020 mm Including Plinth |
| Width | 190 mm Cabinet Only / 260 mm Including Plinth |
| Depth | 340 mm Cabinet Only / 402 mm Including Plinth |
| Weight | 27.5 kg / 60.6 lb per speaker |
| Cabinet Finishes | Black / White / Oak |
Key Features
- Titanium Dome™ Tweeter: Provides smooth, detailed and extended high-frequency reproduction.
- Decoupled Double Dome Technology: Helps improve treble clarity, resolution and accuracy.
- Continuum™ Cone FST™ Midrange: Delivers open, neutral and transparent reproduction of vocals and instruments.
- Twin 6.5-Inch Bass Drivers: Provide powerful and authoritative low-frequency performance.
- 3-Way Vented Enclosure: Uses dedicated tweeter, midrange and bass drivers for accurate frequency reproduction.
- Flowport™ Technology: Helps reduce airflow turbulence and supports controlled bass performance.
- 90 dB Sensitivity: Provides high output capability with suitable amplification.
- 8-Ohm Nominal Impedance: Designed for integration with compatible stereo amplifiers and AV receivers.
- Upgraded Speaker Terminals: Derived from the 700 Series for an improved connection layout and signal path.
- Large-Room Performance: Designed to deliver room-filling scale and authority in larger listening environments.
- Premium Finishes: Available in Black, White and Oak, with Red Cherry in selected markets.
Ideal For
- Large Home Theatre Systems
- Premium Stereo Hi-Fi Systems
- Dedicated Music Rooms
- Large Living Rooms
- Dolby Atmos® Home Theatre
- Media Rooms
- Dedicated Cinema Rooms
- High-End AV Systems
- 2-Channel Music Systems
- Residential Home Theatre Installations





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