Description Bowers & Wilkins HTM81 D4 Centre Speaker The Bowers & Wilkins HTM81 D4 Centre Speaker is arguably the most important in your home theatre setup. The HTM81 D4 has an enviable array of advanced technologies to reinforce that point, including Solid Body tweeter-on-top, a decoupled Continuum™ Cone midrange drive unit and twin 200mm (8-in) Aerofoil™ bass cones. View User Manual >> View Specifications >> View 800 Series >> Features 1x 25mm (1in) Diamond Dome high-frequency, Solid Body Tweeter-on-Top housing 1x 150mm (6in) Continuum cone FST midrange, Biomimetic Suspension 2x 200mm (8in) Aerofoil Profile bass cones with Anti-Resonance Plug 3-way vented-box system with Flowport and Matrix Frequency range: 20Hz to 35kHz Frequency response: 28Hz – 28kHz ( /- 3dB from reference axis) Sensitivity: 90dB spl (on axis at 2.83V at 1m) Harmonic distortion: 2nd and 3rd harmonics (90dB, 1m) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance:8ohms (minimum 3ohms) Recommended amplifier power: 50W – 500W into 8ohms on unclipped programme Optional FS-HTM D4 stand sold separately. Aerofoil bass cone Our Aerofoil bass cone technology remains an outstanding solution to the conundrum of combining low mass and high stiffness in bass cones, thanks to its carbon-fibre skin and variable-profile foam core. Now, Bowers & Wilkins have added the foam Anti-Resonance Plug for lower distortion and even cleaner bass. Diamond dome tweeter One of their 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 they introduced it, they haven’t found a better tweeter dome technology. Aluminum bass pods HTM81 D4 mounts two Aerofoil bass cones in twin solid aluminum bass pods, each of which is clamped into an aluminum 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 they do. They question, examine, understand and then evolve. Bowers & Wilkins use computer modelling to explore and reimagine every aspect of loudspeaker design. Specifications Size & weight Dimensions Height: 334mm (13.1 in) Width: 847mm (33.3 in) Depth: 371mm (14.6 in) Net weight 32.20kg (71 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø150mm (6in) Continuum cone FST midrange 2x ø200mm (8in) Aerofoil cone bass units Frequency range 20Hz to 35kHz Frequency response 28Hz 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 Finishes Cabinet finishes Gloss Black White Grille finishes Black Grey
