








Bowers & Wilkins 803 D4
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.

Bowers & Wilkins 803 D4 Floorstanding Speakers
- 803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure.
- Diamond Tweeter.
- Solid body tweeter on the top.
- Turbine head.
- Innovation is at the heart of everything B&w do.
- 803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure.
- 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 best yet, ensuring optimum scale, power and intelligibility.
Height: 1165mm (45.9 in)
Width: 357mm (14.1 in)
Depth: 511mm (20.1 in)
62.15kg (137 lb)
Diamond tweeter
Solid body Tweeter-on-Top
Continuum™ cone FST
Anti-Resonance plug
Biomimetic Suspension
Turbine™ Head
Matrix™
Aerofoil™ cone bass units
Flowport
3-way vented-box system
1x ø25mm (1in) Diamond dome high-frequency
1x ø130mm (5in) Continuum cone FST midrange
2x ø180mm (7in) Aerofoil cone bass units
16Hz to 35kHz
19Hz to 28kHz (+/-3dB from reference axis)
90dB (on axis at 2.83Vrms at 1m)
2nd and 3rd harmonics (90dB,1m on axis)
<1% 80Hz – 20kHz
<0.3% 100Hz – 20kHz
8Ω (minimum 3.0Ω)
50W – 500W into 8Ω on unclipped programme
0.1Ω
Gloss Black
White
Satin Rosenut
Satin Walnut
Black
Grey
Black
Grey

Reverse Wrap cabinet
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.

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.

Aluminum bass pods
803 D4 mounts two Aerofoil™ bass cones in twin solid aluminum bass pods, each of which is clamped into an aluminum 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.