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 The 20M Ambient Sound Monitor
"Nothing images better"


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

read latest review from
www.soundstage.com

The 20M is a time coherent, point source, first order, two-way acoustic suspension loudspeaker system that 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 bookshelf 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.


"...this is a highly resolving , intimate-sounding speaker that will appeal to people who value high detail and clarity."

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, metallized polypropylene capacitor, 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

 "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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MasterSource Audio, P.O. Box 13396, Research Triangle Park, NC, USA 27709-3396
Phone: 919-244-8777, Fax: 206-339-9034

copyright 2009 NSM Audio Company