Bowers & Wilkins HTM71 S3 Centre Speaker...

...features a Carbon Dome drive unit housed in a Tweeter-On-Top enclosure, a 130mm (5in) Continuum Cone FST midrange driver - particularly important for dialogue clarity - and twin Aerofoil Profile bass cones.
The HTM71S3 is the perfect partner for the 705 S3, 703 S3, and the awesome 702 S3!

Bowers & Wilkins - HTM71S3 - Printable Information Sheet

B&W HTM71 S3 Specifics:

• 1x 25mm (1in) Decoupled Carbon Dome tweeter, Solid Body Tweeter-on-Top housing
• 1x 130mm (5in) Continuum cone FST midrange
• 2x 130mm (5in) Aerofoil Profile bass cones
• 3-way vented-box system with Flowport
• Frequency range: 45Hz to 33kHz
• Frequency response: 50Hz - 28kHz (+/- 3dB from reference axis)
• Sensitivity: 89dB spl (on axis at 2.83V at 1m)
• Harmonic distortion: 2nd and 3rd harmonics (90dB, 1m)
  <1% 90Hz - 22kHz
  <0.5% 130Hz - 20kH
• Nominal impedance:8ohms (minimum 3ohms)
• Recommended amplifier power: 30W - 200W into 8ohms on unclipped programme

Dimensions
Height: 165mm cabinet only or 233mm with tweeter
Width: 628mm cabinet only
Depth: 318mm cabinet only or 356mm with grille and terminals

Net weight
17.5kg

Cabinet finishes
Gloss Black, Satin White, Mocha, Rosenut

Grille finishes

Black
Grey (satin white model only)