Bowers & Wilkins 803 D4


The smallest 800 Series Diamond model to feature the revolutionary Turbine Head, 803 D3 is designed for clarity, power and purity even in modestly-sized listening rooms.

Mounted atop the main enclosure, the Diamond dome tweeter in its solid aluminum housing delivers space, ambience and precise soundstage imaging.

The Turbine Head’s massive midrange housing is carefully shaped and inert, ensuring voices and instruments are delivered with extreme purity.

Voices and instruments are delivered with purity and precision, thanks to the smooth, accurate Continuum™ cone midrange driver.

Solid, dramatic bass is delivered through the rigidity and lightness of the uniquely-shaped, variable thickness Aerofoil™ cone.

Unwanted resonances can blunt the punch of the sound: advanced Matrix bracing keeps the cabinet ultra-rigid and damps out superfluous vibrations.

Perfect sound is about moving air, not the speakers: a stable plinth makes for easy positioning, then keeps it rock-solid for listening.


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Technical features:

Diamond tweeter

Continuum™ Cone FST™

Anti-Resonance plug

Turbine head

Aerofoil™ cone bass units


Optimized Matrix

Solid body tweeter


Description: 3-way vented-box system

Drive units:

1x ø25mm (1 in) Diamond dome high-frequency

1x ø130mm (5 in) Continuum™ cone FST™ midrange

2x ø180mm (7 in) Aerofoil™ cone bass units

Frequency range: 16Hz to 35kHz

Frequency response (+/-3dB from reference axis): 19Hz to 28kHz

Sensitivity (1m on axis at 2.83Vrms): 90dB

Harmonic distortion

2nd and 3rd harmonics (90dB, 1m on axis):

<1 % 70Hz – 20kHz

<0.3% 100Hz – 20kHz

Nominal impedance (min): 8Ω (minimum 3.0Ω)

Recommended amplifier power: 50W – 500W into 8Ω on unclipped program

Max. recommended cable impedance: 0.1Ω


Height: 1160mm (not including feet)

Width: 334mm

Depth: 498mm

Net weight: 65.5kg (144lb)