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B & W 804S Reference Speakers
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The 804S is a more compact version of the 803S. Exactly the same midrange and tweeter configuration is used, but bass is supplied by two smaller diameter Rohacell® cone drivers. These operate into a narrower Matrix™ braced cabinet, making this model ideal for the medium size listening room – elegant and unobtrusive.
Many of the features that go to making the 800 Series models so exceptional are hidden away inside the system. Silver coating the magnet pole in the tweeter helps extend its high-end response. The midrange driver utilises a powerful Neodymium-Iron-Boron magnet. It supplies enough strength to energise a long magnetic field that remains constant over the voice coil's full movement, ensuring the incredibly low levels of harmonic distortion necessary to reproduce programme with full clarity to high output levels.
Our crossovers use only air-cored inductors, again for lowest distortion, and capacitors developed and optimised in conjunction with one of the world's foremost manufacturers. All contacts are gold plated, to ensure long-term freedom from corrosion.
804S Specifications
| Features |
Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Mushrooms
FST
Tweeter on Top
Matrix
Rohacell
De-Coupling
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| Technical Features |
Free-mounted aluminium dome tweeter
Kevlar® brand fibre cone FST™ midrange
Rohacell® cone bass
Matrix™ cabinet
Flowport™
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Description
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3-way vented-box system
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Drive units
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1x ø25mm (1 in) aluminium dome high-frequency
1x ø150mm (6 in) woven Kevlar® cone FST™ midrange
2x ø165mm (6.5 in) Rohacell® cone bass
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Frequency range
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-6dB at 30Hz and 50kHz
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Frequency response
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38Hz - 22kHz ±3dB on reference axis
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Dispersion
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Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc
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Sensitivity
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90dB spl (2.83V, 1m)
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Harmonic Distortion
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2nd and 3rd harmonics (90dB, 1m)
<1% 90Hz - 22kHz
<0.5% 120Hz - 20kHz
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Nominal Impedance
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8Ω (minimum 3.0Ω)
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Crossover frequencies
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350Hz, 4kHz
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Recommended Amplifier Power
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50W - 200W into 8Ω on unclipped programme
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Dimensions
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Height: 1020mm (40.2 in) (not including feet)
Width: 238mm (9.4 in)
Depth: 351mm (13.8 in)
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Net weight
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28kg (62 lb)
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Brand: B & W Speakers
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Last Updated:
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