805 D4 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. * Stand(s) not included Little Diamond 805 D4 might be smaller than its tower speaker siblings, but it’s no lightweight: its beautifully constructed Reverse-Wrap cabinet, stiff aluminum bass pods and 165mm (6.5-in) Continuum™ mid-bass cone afford it exceptional bass extension and scale for a relatively compact speaker. Diamond dome tweeter One of B&w's 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 B&w introduced it, we haven’t found a better tweeter dome technology. Solid Body Tweeter assembly Bowers & Wilkins 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 aluminum to better resist resonance. Rear-mounted crossover The new reverse-wrap orientation of the cabinet on 805 D4 means B&w were able to place its sensitive crossover components inside their own, dedicated space within the cabinet, which has critical benefits to both performance and serviceability. B&w have taken the opportunity to upgrade the speaker terminals, too.   The science of sound Innovation is at the heart of everything B&w do. They question, examine, understand and then evolve. Bowers & Wilkins use computer modelling to explore and reimagine every aspect of loudspeaker design. Go large Why step up from 805 D4 to 804 D4? First, 804 D4 is a three-way speaker, with twin 165mm (6.5-in) Aerofoil™ bass cones – and that has huge benefits to its power and scale. Second, as a three-way speaker, it includes a dedicated midrange cone, so voices and other details will sound more accurate. SPECIFICATIONS Dimensions Height: 440mm (17.3 in) Width: 240mm (9.4 in) Depth: 373mm (14.7 in) Net weight 15.55kg (34.3 lb) 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 Cabinet finishes Gloss Black White Satin Rosenut Satin Walnut Grille finishes Black Grey Black Grey