MasterSource Audio p  o  i  n  t    s  o  u  r  c  e    l  o u  d  s  p  e  a  k  e  r  s

what's new  | prices & dimensions | white paper on design | home theater | about us | brochures | warranty | HOME

buy direct MODELS the jazz the bossa nova  the Segue the 20M 30M   30MSE  60M the 20M armada 15EXP Sub contact us                                                          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. print brochure

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