|
Technical
features |
Nautilus™ tube
loaded aluminium dome tweeter |
|
|
Kevlar® brand
fibre cone FST midrange |
|
|
Flowport™ |
|
Description |
3-way
vented-box system |
|
Drive units |
1x ø25mm (1 in)
aluminium dome high-frequency |
|
|
1x ø130mm (5
in) woven Kevlar® cone FST midrange |
|
|
1x ø165mm (6.5
in) paper/Kevlar® cone bass |
|
Frequency range |
-6dB at 34Hz
and 50kHz |
|
Frequency
response |
62Hz - 22kHz
±3dB on reference axis |
|
Dispersion |
Within 2dB of
reference response |
|
Sensitivity |
88dB spl
(2.83V, 1m) |
|
Harmonic
distortion |
2nd and 3rd
harmonics (90dB, 1m) |
|
|
<1% 100Hz -
22kHz |
|
|
<0.5% 150Hz -
20kHz |
|
Nominal
impedance |
8Ω (minimum
3.0Ω) |
|
Crossover
frequencies |
350Hz, 4kHz |
|
|
Bass unit 3rd
order low pass |
|
|
Midrange
2nd-order high-pass, 1st order low-pass |
|
|
Tweeter
1st-order high-pass |
|
Recommended
amplifier power |
30W - 150W into
8Ω on unclipped programme |
|
Max.
recommended cable impedance |
0.1Ω |
|
Dimensions |
|
|
Height: |
910mm (35.8 in)
(not including feet) |
|
Width: |
200mm (7.9 in) |
|
Depth: |
300mm (11.8 in)
(including grille and terminals) |
|
Net weight |
11.5kg (25.3 lb) |
Three-way floor-standing speakers have a reputation for being difficult
to design successfully. But not the CM7. Thanks to four decades of Bowers
& Wilkins engineering experience, and technology developed in tandem
with our 800 Series, the CM7 respects no such reputation. The CM7 is a
superbly accurate and revealing wide-bandwidth speaker system.
Like its CM siblings, the CM7’s great strength is stereo music
reproduction. A high technology, genuine three-way driver line-up,
compromising a Kevlar®/paper cone bass unit, Kevlar® cone FST midrange
unit and Nautilus™ tube-loaded aluminium dome tweeter. These endow the
CM7 with an ability to portray musical scale from a whispered lyric to
an orchestral crescendo without distortion or compression. The ear-tuned,
low-order crossover circuits, made possible by the remarkably wide
bandwidth of the CM7 drivers, ensure that music is portrayed as a
seamless, cohesive whole. Flowport™ technology to minimise turbulence,
and a bass driver featuring magnet system technology that reduces
distortion, mean that CM7 bass is extended, fast and tuneful. An
optional port sleeve that modifies the low frequency response allows
positioning of the speaker right up close to walls without musical
compromise. The CM7’s Nautilus™ tweeter extends the top end all the way
to 50kHz and beyond.
The
CM7’s tall, slim enclosure is a classically manufactured and exquisitely
veneered expression of traditional cabinet making and provides a
visually understated and mechanically rigid environment for the drivers.
Real wood finishes in Wenge, Rosenut and Maple are available. Also,
because the black or dark grey fabric grille is magnetically attached, removing
it reveals no unsightly grille mounting features.
