Bowers & Wilkins Center Speaker HTM81, Gloss Black

At the center of it all

The center-channel speaker is arguably the most important in home theater – and 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.

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-fiber skin and variable-profile foam core. Now, we have added the foam Anti-Resonance Plug for lower distortion and even cleaner bass.

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.

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 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.

Specifications

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 (+/-3dB from reference axis): 28Hz to 28kHz
Sensitivity (on axis at 2.83Vrms at 1m): 90dB
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
Dimensions: Height: 334mm, Width: 847mm, Depth: 371mm
Neto weight: 32.20kg

Package Contents: Bowers & Wilkins Center Speaker HTM81, Gloss Black, Midrange grille, Bass grilles, Terminal link wires, Self-adhesive plastic pads, Two-part foam plugs, Cleaning cloth, Manual.