We have merged products
from our MasterSource Audio division with NSM Audio. The MasterSource
20M will now be marketed under the NSM Audio brand as The Model
20M Ambient Sound Monitor.
The 20M is a time coherent,
point source, first order, two-way acoustic suspension loudspeaker
system that was first introduced at the 1994 Consumer Electronics
Show in Las Vegas, Nevada, USA. The current 20M is the result
of years of research, innovation, and independent thinking, that
have yielded many evolutionary refinements. As a result the 20M
has exceptional ability to accurately reproduce music and to
retrieve the ambiance of the musical performance.
As proof of the "rightness" of the design, there is
no known loudspeaker that can image better than the 20M.
Several features contribute
to the performance of the 20M. The 20M's combination of time
coherent, point source, first order, two-way, acoustic suspension
designs coupled with innovative cabinet and crossover designs
and accurate voicing, make the Model 20M incredibly true to the
source.
read review by
www.soundstage.com |
Model
20M
Ambient Sound Monitor
"No bookshelf
speaker images better"
previously MasterSource
Audio 20M Images
better than Revel Performa M20
Images better than Mirage MRM-1
Images better than Merlin TSM-SE
Images at least as good as the JMlab Mini Utopia
"The
20M is a very different speaker ... because it uses a two-way
coaxial driver from SEAS that looks like a single driver. It
has the tweeter mounted inside the woofer, right where the dustcap
would normally be. ...The idea in creating a driver like this
is so that the speaker acts as a point source -- in other words,
as close to a theoretical ideal of radiating sound from a single
area."
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As a result of its time coherent,
point source, coincident driver array, the woofer and tweeter
have identical acoustic centers and identical directivites at
the crossover frequency. This produces a stable axiosymmetrical
radiation pattern with smooth power response.This is further
enhanced by a high quality minimalist four element first order
crossover network.
The cabinet of the 20M is finished
in real walnut wood veneer. It is elaborately braced and the
rear panel is sloped two degrees to eliminate box resonances
and colorations. Furthermore, the vertical edges of the cabinet
are accentuated with exotic Peruvian walnut hardwood inserts
that are rounded to prevent sonic refractions and to enhance
the appearance of the 20M.
Special Features:
Magnetically shielded, time coherent, concentric, point source,
driver array
Design: Time coherent,
point source, first order, two-way acoustic suspension
Drivers: concentric 6.5 in cast magnesium frame
poly woofer, 1 inch soft dome tweeter
Crossovers: Copper inductor, film foil capacitor,
non-inductive wire wound resistor
Connectors: Bi-wire/Bi-amp, five-way gold plated
binding posts
Cabinet: Walnut veneered 3/4 inch braced anti-resonant
medite board
Wiring: Silver plated copper to tweeter, multi-strand
copper to woofer, inductor is wired directly between woofer and
terminal
Fasteners: Hex fasteners
Technical Data:
Frequency Response: 54Hz-20kHz +/- 3 dB
-6dB:
47Hz
-10dB: 38Hz
Dimensions: 14 X 9 X10 (H X W X D)
Sensitivity: 85 dB 1 watt/m
Rated Impedance: 8 ohms
Recommended Power: 50-150 watts
Weight: 50 pounds per pair
print
side one of PDF brochure
print
side two of PDF brochure |
