801 D4

The loudspeaker that sets the standard other high-end designs will be judged by for years to come. Endowed with every new technology the 800 Series Diamond has to offer, the reference-quality 801 D4 is an instant icon.

The ultimate 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 801 D4 is our best yet, upgraded with extensive aluminium bracing to reinforce key stress points.

Turbine Head

The all-aluminium Turbine Head houses our Continuum midrange cone in a stiff and critically damped enclosure to eliminate unwanted resonances. At the same time, its decoupled from both the bass enclosure and the tweeter body. The result? The most realistic midrange sound yet.

Biomimetic Suspension

Sometimes, making a big difference takes unconventional thinking. Our new Biomimetic Suspension revolutionizes midrange performance by greatly reducing the unwanted air pressure and coloration that a traditional fabric spider can generate. The result? Midrange transparency you wouldnt believe.

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.

The state of our art

801 D4 is our flagship and the most powerful model in the new 800 Series Diamond range. Its no-compromise design includes all our most advanced technologies in their purest, most optimised form alongside crossover components of the highest quality. You want our reference loudspeaker? This is it

Specifications

Size & weight

Dimensions	Height: 1221mm (48.1 in) Width: 451mm (17.8 in) Depth: 600mm (23.62 in)
Net weight	100.60kg (221.8 lb)

Technical details

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 25mm (1in) Diamond dome high-frequency 1x 150mm (6in) Continuum cone FST midrange 2x 250mm (10in) Aerofoil cone bass units
Frequency range	13Hz to 35kHz
Frequency response	15Hz 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% 30Hz 20kHz <0.3% 100Hz 20kHz
Nominal impedance	8 (minimum 3.0)
Recommended amplifier power	50W 1000W into 8 on unclipped programme
Max recommended cable impedance	0.1