804 D4

For listeners who crave the performance of an 800 Series Diamond tower speaker but prefer a more conventional aesthetic, the 804 D4 is the perfect choice. Its new cabinet and plinth make it our best-performing 804 yet.

Classic quality

804 D4 is perhaps more conventional in appearance than other tower speakers in the 800 Series Diamond range, but its 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.

Aluminium 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.

Aluminium 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.

Get a Head

804 D4 is the entry-level floor-standing model in the 800 Series Diamond range. Step up to 803 D4 and youll find larger bass drivers (180mm, 7-in) plus, crucially, the addition of a Turbine Head enclosure for the 130mm (5-in) midrange cone, which adds even more spaciousness to the sound.

Specifications

Size & weight

Dimensions	Height: 1071mm (42.2 in) Width: 306mm (12 in) Depth: 391mm (15.4 in)
Net weight	36.85kg (81.2 lb)

Technical details

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 25mm (1in) Diamond dome high-frequency 1x 130mm (5in) Continuum cone FST midrange 2x 165mm (6.5in) Aerofoil cone bass units
Frequency range	20Hz to 35kHz
Frequency response	24Hz to 28kHz ( /-3dB from reference axis)
Sensitivity	89dB (on axis at 2.83Vrms at 1m)
Harmonic distortion	2nd and 3rd harmonics (90dB,1m on axis) <1% 90Hz 20kHz <0.3% 120Hz 20kHz
Nominal impedance	8 (minimum 3.0)
Recommended amplifier power	50W 200W into 8 on unclipped programme
Max recommended cable impedance	0.1