Skip to content
 
803 D4 - Side - Black 803 D4 - Side - White 803 D4 - Side - Rosenut  803 D4 - Side - Walnut
 803 D4 - Grille - Black 803 D4 - Grille - White 803 D4 - Grille - Rosenut 803 D4 - Grille  Walnut
803 D4 - Front - Black 803 D4 - Front - White 803 D4 - Front - Rosenut  803 D4 - Front - Walnut
803 D4 - Back - Black 803 D4 - Back - White 803 D4 - Back - Rosenut 803 D4 - Back - Walnut
803 D4 - Beauty - Walnut

803 D4

Floor-standing speaker

Our most compact headed model brings all the technical advantages of a dedicated midrange enclosure – the Turbine Head, with its decoupled midrange cone – to a smaller footprint that’s easily accommodated in any home.

Quantity:

-
1
+

Out of stock

... (you save ) per pair

Starting at /mo with . Prequalify now

Downloads:

download
Manual
download
Info Sheet
download
Brochure
 

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.

 

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.

 

Discover More

 

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.

 

Discover 802 D4

 

800 Series Diamond

Introducing the world’s most advanced loudspeaker range

arrow

Technical specifications

Technical features
Diamond tweeter
Solid body Tweeter-on-Top
Continuum cone FST
Anti-Resonance plug
Biomimetic Suspension
Turbine Head
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 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
8Ω (minimum 3.0Ω)

Recommended amplifier power
50W – 500W into 8Ω on unclipped programme

Max. recommended cable impedance
0.1Ω

Dimensions
Height: 1165mm
Width: 357mm
Depth: 511mm

Net weight
62.15kg

Finishes
Cabinet:
Gloss Black
White
Satin Rosenut
Satin Walnut

Grille:
Black
Grey
Black
Grey

 

803 D4 - black