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.
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
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
8ohms (minimum 3.0ohms)
Recommended amplifier power
50W – 500W into 8ohms on unclipped programme
Max. recommended cable impedance
0.1ohms
Dimensions
Height: 1165mm
Width: 357mm
Depth: 511mm
Net weight
62.15kg
Cabinet finishes
Gloss Black
White
Satin Rosenut
Satin Walnut
Grille finishes
Black
Grey
Black
Grey
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"After hearing Bowers & Wilkins’ flagship 801 D4 recently, I feared that the little brother 803 D4 would be a bit of a letdown. But I was wrong, because the experience of sound and music is very much the same here. Especially on vocals and acoustic instruments, you can hear how focused and dynamic – and not least airy – everything sounds."
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