803 D4 Gloss Black
Flagship 800 Series Diamond floor-standing speakers
Model 150239-01-00-005 · Series 800 Series Diamond
Our most compact headed model brings all the technical advantages of a dedicated midrange enclosure – the Turbine™ Head, with its decoupled midrange cone – to a smaller footprint that’s easily accommodated in any home.
Read moreAt a glance
All specifications- Sensitivity
- 90 dB (2.83 V / 1 m)
- Nominal impedance
- 8 ohms
- Frequency response
- 16 Hz to 35 kHz
- Dimensions (W × H × D)
- 357 × 1,165 × 511 mm
- Weight
- 62.2 kg
- Number of ways
- 3
Overview
Instead of a conventional loudspeaker box, our cabinets are made from a continuous curved section of wood, with the drive units mounted at the heart of the curvature. This stiffer, more inert structure resists mechanical resonances far better and also ensures better dispersion of sound.
Highlights
- Diamond Tweeter
- Solid body Tweeter-on-Top
- Continuum™ Cone FST
- Anti-Resonance Plug
- Biomimetic Suspension
- Turbine™ Head
- Matrix™
- Aerofoil™ Cone Bass Units
- Flowport™
About Bowers & Wilkins
There’s nothing quite like experiencing the True Sound of a performance. At Bowers & Wilkins, our dedicated engineers develop and integrate the highest calibre of performance audio technology into our products. The result allows you to hear music and movies with the striking accuracy and realism of the original recording, with nothing added and nothing taken away.
All Bowers & Wilkins productsFeatures
4

Enhanced Matrix™
Matrix bracing uses interlocking panels to reinforce loudspeaker cabinet walls in all directions internally, reducing resonance and creating a more believable soundstage. The Matrix assembly in 803 D4 is our best yet, ensuring optimum scale, power and intelligibility.

Aluminium bass pods
803 D4 mounts two Aerofoil™ bass cones in twin solid aluminium bass pods, each of which is clamped into an aluminium plate fixed to the stiffest part of its curved cabinet. Formed as single pieces of metal, these stiff structures provide the perfect mechanical location for those powerful bass cones.

The science of sound
Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond so special here. Discover more

Step up for more power
803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure. It is, however, smaller than its other siblings. Step up to the 802 D4, and you’ll get both larger 200mm (8-in) bass cones and a larger 150mm (6-in) midrange driver. Discover 802 D4
Specifications
- Sensitivity
- 90 dB (2.83 V / 1 m)
- How loud it plays for a given signal. Higher sensitivity needs less amplifier power.
- Nominal impedance
- 8 ohms
- The electrical load your amplifier drives. System Builder checks it against the amplifier you pick.
- Frequency response
- 16 Hz to 35 kHz
- The range of pitches it reproduces, from deep bass to the top of the treble.
- Dimensions (W × H × D)
- 357 × 1,165 × 511 mm
- Width, height and depth, without cables.
- Weight
- 62.2 kg
- Per unit, out of the box.
- Number of ways
- 3
- Driver size
- 25 mm
- Model code
- BOWERS-WILKINS-803-D4-GLOSS-BLACK
- Quote it when you ask a specialist.
Size & weight
- Net weight
- 62.15kg (137 lb)
- Dimensions
- Height: 1165mm (45.9 in) Width: 357mm (14.1 in) Depth: 511mm (20.1 in)
Technical details
- Technical features
- Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Matrix™ Anti-Resonance plug Biomimetic Suspension Turbine™ Head Aerofoil™ cone bass units Flowport
- Description
- 3-way vented-box system
- Drive units
- 1x ø25mm (1in) Diamond dome high-frequency 1x ø130mm (5in) Continuum cone FST midrange 2x ø180mm (7in) Aerofoil cone bass units
- Frequency range
- 16Hz to 35kHz
- Frequency response
- 19Hz to 28kHz (+/-3dB from reference axis)
- Sensitivity
- 90dB (on axis at 2.83Vrms at 1m)
- Harmonic distortion
- 2nd and 3rd harmonics (90dB, 1m on axis) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz
- Nominal impedance
- 8Ω (minimum 3.0Ω)
- Recommended amplifier power
- 50W – 500W into 8Ω on unclipped programme
- Max recommended cable impedance
- 0.1Ω
Finishes
- Cabinet finishes
- Gloss Black White Satin Rosenut Satin Walnut
- Grille finishes
- Black Grey Black Grey
Downloads
3
- 803 D4 ManualManual · English · PDF, 12.2 MBDownload
- 803 D4 Info SheetDatasheet · English · PDF, 1.3 MBDownload
- 803 D4 BrochureBrochure · English · PDF, 4.4 MBDownload
Awards and press
2

There are few speakers more revered throughout the music industry than the volume-pumping, chicly-designed 800 Series Diamond range. Abbey Road recording studios uses them; which should tell you all you need to know.
Gentlemen's Journal
Simply outstanding integration, detail and space.
AVForums
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