40 years of excellence

Innovation. 801 D4 is defined by it. In each of its incarnations over the decades, 801 has always been the most advanced loudspeaker that we know to make at that particular point in time, a showcase of all our newest technologies and most original thinking. Small wonder it has become an icon.

The ultimate Matrix™

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, it’s decoupled from both the bass enclosure and the tweeter body. The result? The most realistic midrange sound yet.

Turbine™ Head

The all-aluminum Turbine Head houses our Continuum midrange cone in a stiff and critically damped enclosure to eliminate unwanted resonances. At the same time, it’s 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 revolutionises midrange performance by greatly reducing the unwanted air pressure and coloration that a traditional fabric spider can generate. The result? Midrange transparency you wouldn’t 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…

Size & weight

• DimensionsHeight: 1221mm (48.1 in)
  Width: 451mm (17.8 in)
  Depth: 600mm (23.62 in)

• Net weight100.60kg (221.8 lb)

Technical details

• Technical featuresDiamond tweeter
  Solid body Tweeter-on-Top
  Continuum™ cone FST
  Matrix™
  Anti-Resonance plug
  Biomimetic Suspension
  Turbine™ Head
  Aerofoil™ cone bass units
  Flowport

• Description3-way vented-box system

• Drive units1x ø25mm (1in) Diamond dome high-frequency
  1x ø150mm (6in) Continuum cone FST midrange
  2x ø250mm (10in) Aerofoil cone bass units

• Frequency range13Hz to 35kHz

• Frequency response15Hz to 28kHz (+/-3dB from reference axis)

• Sensitivity90dB (on axis at 2.83Vrms at 1m)

• Harmonic distortion2nd and 3rd harmonics (90dB, 1m on axis)
  <1% 30Hz – 20kHz
  <0.3% 100Hz – 20kHz
  

• Nominal impedance8Ω (minimum 3.0Ω)

• Recommended amplifier power50W – 1000W into 8Ω on unclipped programme

• Max recommended cable impedance0.1Ω

Finishes

• Cabinet finishesGloss Black
  White
  Satin Rosenut
  Satin Walnut

• Grille finishesBlack
  Grey
  Black
  Grey