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804 D4 is perhaps more conventional in appearance than other tower speakers in the 800 Series Diamond range, but it’s every bit as sophisticated. Its new Reverse-Wrap cabinet is both a mechanical and acoustic revolution in its class, and its new plinth ensures rock-solid, accurate bass response too.
Aluminum top-plate
Every stereo model in the new 800 Series Diamond range has a significantly upgraded cabinet with an all-new aluminum top-plate. This also provides a perfect mounting point for all-new Leather by Connolly trim, with luxurious black leather for dark cabinets and light grey for lighter finishes.
Reverse Wrap cabinet
Instead of a conventional loudspeaker box, the cabinet in 804 D4 is 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.
Aluminum plinth
A great speaker needs a rock-solid foundation. The new 804 D4 uses a downwards-firing Flowport exiting on to a solid aluminum plinth complete with a steel constrained layer damping sheet, which controls unwanted resonance. It also has greatly upgraded spikes for maximum stability and durability.
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.
Specifications
Technical features: Diamond tweeter, Solid body Tweeter-on-Top, Continuum cone FST™, Anti-Resonance plug, Biomimetic Suspension, Matrix™, Aerofoil cone bass units, Flowport™
Description: 3-way vented-box system
Drive units: 1x ø25mm (1in) diamond dome high-frequency, 1x ø130mm (5in) Continuum cone FST™ midrange, 2x ø165mm (6.5in) Aerofoil cone bass units
Frequency range: 20Hz to 35kHz
Frequency response (+/-3dB from reference axis): 24Hz to 28kHz
Sensitivity (on axis at 2.83Vrms at 1m): 89dB
Harmonic distortion: 2nd and 3rd harmonics (90dB, 1m on axis), <1 % 90Hz – 20kHz, <0.3% 120Hz – 20kHz
Nominal impedance: 8Ω (minimum 3.0Ω)
Recommended amplifier power: 50W – 200W into 8Ω on unclipped programme
Max. recommended cable impedance: 0.1Ω
Dimensions: Height: 1071mm, Width: 306mm, Depth: 391mm
Neto weight: 36.85kg
Package Contents: Bowers & Wilkins Floorstanding Speaker 804 D4, Gloss Black, 1Pc, Grille, Terminal link wires, Spikes, Rubber feet and lock nuts (fitted to the speaker), Metal spike adjustment bar, Lock nut adjustment tool, Cleaning cloth, Manual.
