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The M-1 has been engineered with the same design attributes and ethos as
B&W¡¯s larger ranges. Perhaps the most striking thing about the M-1 is the
weight and strength of its curved aluminium cabinet. This is combined with a
strong, glass-loaded ABS front baffle. Together they provide an excellent
cabinet: the curved aluminium is stiff and the ABS offers excellent and
appropriate damping characteristics.
The M-1¡¯s drive units were
developed by Bowers & Wilkins specifically for the design. The
metal dome tweeter benefits from refinements developed for the new B&W 800
Series and includes Nautilus¢â tube loading and neodymium magnets. The glass
fibre bass/midrange cone¡¯s ability to absorb standing waves has been further
enhanced by the inclusion of five strategically placed resin filled slots that
further minimise distortion.
The result of this detailed cabinet and
drive unit engineering has allowed B&W¡¯s engineers to borrow another feature
from the new 800 Series and utilise the simplest of electronic equalisation in
the M-1¡¯s crossover. Each of the drive units is fed by only a single, carefully
selected component. This approach to crossover design, although painstaking
as it relies on optimising all of the physical components in a design, is
crucial in achieving its aim of neither adding to nor subtracting from the
original signal.
The M-1 is available in three colour options - black,
white and silver, each with chromium plated stem and table base.
| Woven Kevlar |
|
| Crossover Tuning |
|
| Nautilus Tapering Tube |
|
| Flowport |
|
| Mushrooms |
|
| FST |
|
| Tweeter on Top |
|
| Matrix |
|
| Rohacell |
|
| Diamond Tweeters |
|
| Sphere / Tube Enclosure |
|
| De-Coupling |
|
| Nautilus |
|
|
|
| Technical features |
Metal dome Nautilus¢â tweeter |
|
Woven glass fibre cone bass / midrange |
| Description |
2-way vented-box system |
| Drive units |
1x ©ª25mm (1 in) metal dome high-frequency |
|
1x ©ª100mm (4 in) woven glass fibre cone bass / midrange |
| Frequency range |
-6dB at 72Hz and 50kHz |
| Frequency response |
80Hz - 23kHz ¡¾3dB on reference axis |
| Dispersion |
Within 2dB of reference response |
| Horizontal: |
over 60¨¬ arc |
| Vertical: |
over 10¨¬ arc |
| Sensitivity |
85dB spl (2.83V, 1m) |
| Harmonic distortion |
2nd and 3rd harmonics (90dB, 1m) |
|
<1% 120Hz - 30kHz |
|
<0.5% 250Hz - 22kHz |
| Nominal impedance |
8§Ù (minimum 4.8§Ù) |
| Crossover frequency |
4kHz |
| Recommended amplifier power |
20W - 100W into 8§Ù on unclipped programme |
| Max. recommended cable impedance |
0.1§Ù |
| Dimensions |
|
| Height: |
243mm (9.6 in) |
| Width: |
114mm (4.5 in) |
| Depth: |
172mm (6.8 in) |
|
Mounted on table stand |
| Net weight |
2.7 kg (6 lb) including table stand |
| Finishes |
|
| Cabinet: |
White, silver or black |
| Grille: |
White, silver or black perforated steel to
match |
|