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Bowers & Wilkins HTM4 Diamond (D2) Rosenut centre speaker (ex display)

Bowers & Wilkins

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Note: Colours and options may be limited, we will confirm your order.

Perfect for smaller viewing areas, the HTM4 Diamond centre-channel speaker will seamlessly balance the sound in an 800 Diamond home theatre set-up, thanks to highly advanced, complementary technology like a Kevlar bass/midrange driver and – for the rst time ever – a diamond dome tweeter unit.

Technical Specications

Technical features

Free-mounted diamond dome tweeter NautilusTM tube tweeter loading
Quad magnet tweeter motor
® brand bre cone bass/midrange MatrixTM cabinet



2-way vented-box system


Drive units

1x ø25mm (1 in) diamond dome high-frequency
1x ø165mm (6.5 in) woven Kevlar® cone bass/midrange


Frequency range

-6dB at 42Hz and 33kHz
49Hz - 28kHz ±3dB on reference axis


Frequency response

Within 2dB of reference response Horizontal: over 60o arc



Vertical: over 10o arc



88dB spl (2.83V, 1m)


Harmonic distortion

2nd and 3rd harmonics (90dB, 1m)
<1% 100Hz - 100kHz
<0.5% 150Hz - 100kHz 


Nominal impedance

8Ω (minimum 4.7Ω) 


Crossover frequency



Recommended amplifier power

50W - 120W into 8Ω on unclipped programme 


Max. recommended cable impedance




Height: 279mm (11 in)
Width: 486mm (19.1 in) 
Depth: 287mm (11.3 in)


Net weight

12.5kg (27 lb)