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Bowers & Wilkins

803 D4 Floorstanding Speaker

803 D4 Floorstanding Speaker

Regular price $38,500.00
Regular price Sale price $38,500.00
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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.

Small wonder

803 D4 may be notably more compact than the 801 D4 or 802 D4, but it still bristles with technical innovation, most obviously in its use of a three-box construction. Its 130mm (5in) midrange cone is carefully isolated from the impact of its bass cones thanks to its Turbine Head enclosure.

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.

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.

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 (8in) bass cones and a larger 150mm (6in) midrange driver.



Technical Features

Diamond tweeter Solid body

Tweeter-on-Top Continuum cone FST™

Anti-Resonance plug

Biomimetic Suspension Turbine Head Matrix™

Aerofoil cone bass units Flowport™

Descriptions 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 (+/-3dB from reference axis)  19Hz to 28kHz
Sensitivity (on axis at 2.83Vrms at 1m)  90dB
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

Height: 1165mm

Width: 357mm

Depth: 511mm

Net weight



Cabinet: Gloss Black, White Satin, Rosenut Satin Walnut


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