Bowers & Wilkins B&W 804 Diamond

Details for this product are shown below.

As wonderfully versatile as its smaller brother the 805 Diamond, the elegant, floorstanding 804 Diamond has an even more commanding acoustic presence, thanks to a true three-way design incorporating two Rohacell® bass units, an FST™ midrange and a diamond dome tweeter delivering pin-sharp clarity all the way up the frequency range.

A brilliant all-round performer for any occasion.

Diamonds as standard

The hypothetical perfect tweeter is one that balances infinite stiffness with near-zero density. Only one material on earth comes close to matching those properties: diamond. Thanks to modern scientific techniques, B&W can grow diamond, like a crystal, to form the optimum tweeter dome shape. The result is truly exceptional sound at high frequencies. And it comes as standard with every speaker in the range, including the 804 Diamond.

Shock absorber

For a long time, B&W thought their Kevlar® midrange cones couldn’t get any better – but then they came up with the fixed suspension transducer (FST for short). FST enhances the properties of Kevlar by acting like a circular shock absorber around the cone, absorbing the sound-smudging bending waves that travel outwards to the perimeter. A midrange driver never sounded cleaner, or more responsive.


Description 3-way vented-box system

Drive units 1x ø25mm (1 in) diamond dome high-frequency

1x ø150mm (6 in) woven Kevlar® cone FST™ midrange

2x ø165mm (6.5 in) Rohacell® cone bass

Frequency range -6dB at 30Hz and 33kHz

Frequency response 38Hz - 28kHz ±3dB on reference axis

Dispersion Within 2dB of reference response

Horizontal: over 60º arc

Vertical: over 10º arc

Sensitivity 90dB spl (2.83V, 1m)

Harmonic distortion 2nd and 3rd harmonics (90dB, 1m)
<1% 90Hz - 22kHz
<0.5% 120Hz - 20kHz

Nominal impedance 8Ω (minimum 3.0Ω)

Crossover frequencies 350Hz, 4kHz

Recommended amplifier power 50W - 200W into 8Ω on unclipped programme

Max. recommended cable impedance 0.1Ω

Height: 1020mm (40.2 in) (not including feet)
Width: 238mm (9.4 in)
Depth: 351mm (13.8 in)

Net weight 27kg (59 lb)

Piano Black Gloss

Grille: Black cloth

Price: £5750.00

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