HTM81 D4 White
Flagship 800 Series Diamond center channel speaker
Model 150244-03-00-005 · Series 800 Series Diamond
Our largest centre-channel speaker is designed to partner the 801 D4 and 802 D4. A powerful performer, it has both the scale and the midrange extension to perfectly match the quality of its illustrious stablemates. *Stand(s) not included.
Read moreAt a glance
All specifications- Sensitivity
- 90 dB (2.83 V / 1 m)
- Nominal impedance
- 8 ohms
- Frequency response
- 20 Hz to 35 kHz
- Dimensions (W × H × D)
- 847 × 334 × 371 mm
- Weight
- 32.2 kg
- Number of ways
- 3
Overview
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.
Highlights
- Diamond Tweeter
- Solid body Tweeter-on-Top
- Continuum™ Cone FST
- Anti-Resonance Plug
- Biomimetic Suspension
- Matrix™
- Aerofoil™ Cone Bass Units
- Flowport™
About Bowers & Wilkins
There’s nothing quite like experiencing the True Sound of a performance. At Bowers & Wilkins, our dedicated engineers develop and integrate the highest calibre of performance audio technology into our products. The result allows you to hear music and movies with the striking accuracy and realism of the original recording, with nothing added and nothing taken away.
All Bowers & Wilkins productsFeatures
3

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. Discover More
Specifications
- Sensitivity
- 90 dB (2.83 V / 1 m)
- How loud it plays for a given signal. Higher sensitivity needs less amplifier power.
- Nominal impedance
- 8 ohms
- The electrical load your amplifier drives. System Builder checks it against the amplifier you pick.
- Frequency response
- 20 Hz to 35 kHz
- The range of pitches it reproduces, from deep bass to the top of the treble.
- Dimensions (W × H × D)
- 847 × 334 × 371 mm
- Width, height and depth, without cables.
- Weight
- 32.2 kg
- Per unit, out of the box.
- Number of ways
- 3
- Driver size
- 25 mm
- Model code
- BOWERS-WILKINS-HTM81-D4-WHITE
- Quote it when you ask a specialist.
Size & weight
- Net weight
- 32.20kg (71 lb)
- Dimensions
- Height: 334mm (13.1 in) Width: 847mm (33.3 in) Depth: 371mm (14.6 in)
Technical details
- Technical features
- Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Matrix™ Anti-Resonance plug Biomimetic Suspension 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
Downloads
3
- HTM81 D4 ManualManual · English · PDF, 35.9 MBDownload
- HTM81 D4 Info SheetDatasheet · English · PDF, 1.6 MBDownload
- 801 D4 BrochureBrochure · English · PDF, 4.4 MBDownload
Awards and press
1

Simply outstanding integration, detail and space.
AVForums
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