The 805 D4 stand-mount loudspeaker is the most compact model in the 800 Series Diamond™ range, but it’s still packed with advanced technologies, including the Diamond dome tweeter and the Solid Body Tweeter-on-Top.

Little Diamond

805 D4 might be smaller than its floorstanding siblings, but it’s no lightweight: its beautifully constructed Reverse-Wrap cabinet, stiff aluminium bass pods and 165mm (6.5in) Continuum™ mid-bass cone afford it exceptional bass extension and scale for a relatively compact speaker.

Diamond dome tweeter

One of our most significant accomplishments over the past two decades, the ultra-stiff, supremely accurate Diamond dome tweeter is the perfect combination of low mass, exceptional stiffness and outstanding accuracy. 15 years after we introduced it, we haven’t found a better tweeter dome technology.

Solid Body Tweeter assembly

Our newest Solid Body Tweeter-on-Top housing features an elongated form with a longer tube-loading system, producing an even more free and open sound with high frequencies. The carefully decoupled housing is milled from a single solid block of aluminium to better resist resonance.

Rear-mounted crossover

The new reverse-wrap orientation of the cabinet on 805 D4 means we can place its sensitive crossover components inside their own, dedicated space within the cabinet, which has critical benefits to both performance and serviceability. We’ve taken the opportunity to upgrade the speaker terminals, too.

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. 

Technical specifications

Technical features
Diamond tweeter
Solid body Tweeter-on-Top
Continuum™ cone bass/mid
Anti-Resonance plug
Matrix™
Flowport

Description
2-way vented-box system

Drive units
1x ø25mm (1in) diamond dome high-frequency
1x ø165mm (6.5in) Continuum cone bass midrange

Frequency range
34Hz to 35kHz

Frequency response
42Hz to 28kHz (+/-3dB from reference axis)

Sensitivity
88dB (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
8Ω (minimum 4.6Ω)

Recommended amplifier power
50W – 120W into 8Ω on unclipped programme

Max. recommended cable impedance
0.1Ω

Dimensions
Height: 440mm
Width: 240mm
Depth: 373mm

Net weight
15.55kg