Bowers & Wilkins HTM1 Diamond D3 Studio Reference Center Speaker

The perfect center channel speaker for multichannel audio systems built around the larger 800 Series Diamond speakers – designed for seamless integration and crystal-clear dialogue.

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The center of your multichannel system

Designed to match the larger 800 Series Diamond speakers, the HTM1 D3 is the ultimate center channel speaker.

Hear small details in a big way

Mounted atop the main enclosure, the Diamond dome tweeter in its solid aluminum housing delivers space, ambiance, and precise soundstage imaging.

Truly amazing sound

Voices and instruments are delivered with purity and precision, thanks to the smooth, accurate Continuum™ cone mid/bass driver.

Nimble and powerful

Solid, dramatic bass is delivered through the rigidity and lightness of the uniquely-shaped, variable thickness Aerofoil™ cone.


Technical features

  • Diamond tweeter
  • Continuum™ Cone FST™
  • Anti-Resonance plug
  • Aerofoil™ cone bass units
  • Flowport™
  • Optimized Matrix
  • Solid-body tweeter
  • Tweeter-on-Top

Description – 3-way vented-box system

Drive units

  • 1x ø25mm 1 in Diamond dome high-frequency
  • 1x ø150mm 6 in Continuum™ cone FST™ midrange
  • 2x ø200mm 8 in Aerofoil™ cone bass units

Frequency range – 20Hz to 35kHz

Frequency response +/-3dB from reference axis – 28Hz to 28kHz

Sensitivity 1m on-axis at 2.83Vrms – 91dB

Harmonic distortion

  • 2nd and 3rd harmonics 90dB, 1m on-axis
  • <1 % 80Hz – 20kHz
  • <0.3% 110Hz – 20kHz

Nominal impedance min – 8Ω minimum 3.0Ω

Recommended amplifier power – 50W – 500W into 8Ω on unclipped program

Max. recommended cable impedance – 0.1Ω


  • Height: 330mm not including feet
  • Width: 850mm
  • Depth: 342mm

Net weight – 30.4kg 67lb

Additional information

Weight 35 kg
Dimensions 40 × 90 × 40 cm


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