B&W CM 9

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[edit] Description

Manufacturer: B&W

If it’s hard to put the sound of the CM9 into words, that’s just as well. This top-of-the-range floorstanding speaker will fill even the largest domestic spaces with music so richly detailed, and so startlingly lifelike, that it will leave you speechless.

The three-way CM9 delivers truly commanding bass with the aid of twin 165mm paper/Kevlar cone drive units. An FST driver, with its characteristic compression surround supporting the outer edge of the distinctive Kevlar cone, is specially developed for outstanding midrange performance. The CM9’s Nautilus™ tube-loaded aluminium dome tweeter keeps high frequencies crisp and sharp all the way up to 50kHz and beyond.

The quality of CM Series drive units has made it possible to use minimalist crossovers throughout the whole range. The resulting gentle transition between drivers avoids the unnaturally rapid changes in dispersion that bedevil more complex designs, while the high quality components, carefully chosen after exhaustive listening tests, ensure that as little as possible gets between you and the sound of the original recording.

All CM Series speakers come with aluminium driver trims. Grilles attach magnetically, so there are no unsightly grille-mounting features to spoil the clean lines of the speaker’s façade. For the finish, you can choose either one of two real-wood veneers in Rosenut or Wengé, or a highly polished gloss black.

[edit] Specifications

[edit] Technical features

Nautilus tube loaded aluminium dome tweeter
Kevlar brand fibre cone FST midrange
Flowport

[edit] Description

3-way vented-box system

[edit] Drive units

1x ø25mm (1 in) aluminium dome high-frequency
1x ø150mm (6 in) woven Kevlar cone FST midrange
2x ø165mm (6.5 in) paper/Kevlar cone bass

[edit] Frequency range

-6dB at 30Hz and 50kHz

[edit] Frequency response

56Hz - 22kHz ±3dB on reference axis

[edit] Dispersion

Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc

[edit] Sensitivity

89dB spl (2.83V, 1m)

[edit] Harmonic distortion

2nd and 3rd harmonics (90dB, 1m)
<1% 90Hz - 22kHz
<0.5% 120Hz - 20kHz

[edit] Nominal impedance

8Ω (minimum 3.0Ω)

[edit] Crossover frequencies

350Hz, 4kHz

[edit] Recommended amplifier power

30W - 200W into 8Ω on unclipped programme

[edit] Max. recommended cable impedance

0.1Ω

[edit] Dimensions

Height: 990mm (39 in) (cabinet only)
- 1025mm (40.4 in) (including plinth but not feet)
Width: 200mm (7.9 in) (cabinet only)
- 320mm (12.6 in) (including plinth)
Depth: 300mm (11.8 in) (cabinet only)
- 321mm (12.6 in) (including grille and terminals but not plinth)
- 370mm (14.6 in) (including plinth)