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2-Way Speaker/Passive Radiator Design: The secret to the Motion SLM
ultra-slim speaker's outstanding performance is the innovative dual 4"
ultra-slim fiber cone woofers and dual 4" high-velocity passive bass radiators,
paired with a Folded Motion tweeter to create smooth, refined sound with
stunning dynamic range and excellent clarity.
- Folded Motion Tweeter: MartinLogan's Folded Motion tweeter
helps give the Motion SLM ultra-slim loudspeaker its natural, realistic high
frequency sound. Lightning fast transient response, combined with a large
surface area (8x that of a typical 1" dome tweeter) creates clear, dynamic, and
precise sound. The 1" x 1.4" Folded Motion tweeter works by moving air (which
creates sound) perpendicular to the folded ridges of the diaphragm, similar to
how an accordion works. This extremely low mass diaphragm "squeezes" air and
requires almost 90% less excursion than the typical 1" dome tweeter, which
drastically minimizes distortion while providing a lightning fast response time.
The increased surface area also provides a wide, yet controlled sound dispersion
to create a realistic and carefully etched sound stage.
- Dual Ultra-Slim Woofers/Passive Bass Radiators: Two 4" paper cone woofers
are coupled with two 4" paper cone passive radiators to provide rich, detailed midrange and
midbass that complement MartinLogan's Folded Motion tweeter perfectly.
Precision Crossovers: To seamlessly blend the audio
output from the high frequency driver (tweeter) and the midbass drivers
(woofers), the Motion SLM loudspeaker features a precision 2600Hz crossover
utilizing custom air core coil and low DCR steel laminate inductors,
polyester film capacitors in series, and low DF electrolytic capacitors in
Ultra-Slim Cabinet: The high-gloss black ultra-slim cabinet is only 1.875"
deep, for a total wall protrusion of 2.0" with the included wall mount bracket. Hidden discretely underneath the grille, the drivers are held securely in
place by a solid, black-anodized brushed aluminum baffle.
Spring-Post Connectors: The MartinLogan Motion SLM speaker
features two spring-post connectors to attach your speaker wire. The
spring-posts will accept bare wire (16- to 12-gauge) and pin-connectors. The rubber caps on the spring-post connectors must be
removed to use banana plugs.
Applications: The Folded Motion tweeter has an 80° x 80° dispersion
pattern, which allows the Motion SLM ultra-slim speaker to sound exactly the
same in a horizontal or vertical orientation, making them perfect for
Left-Center-Right (LCR) system applications. Or, use them as rear surround
speakers. Because of its ultra-slim design, the Motion SLM is perfect for
wall-mounting next to your flat-panel television.
Note: This speaker is not magnetically shielded and therefore
should not be placed directly beside or atop a CRT television.
Mounting Options: The MartinLogan SLM loudspeaker can be wall mounted
next to your flat-panel TV using the keyhole slot on the back of the speaker and
the included wall-mount bracket. The speaker can be mounted vertically or
horizontally (for center-channel application) on your wall. While MartinLogan
created the Motion SLM to wall mount next to a flat-panel TV, that's not its
only application. Also, included with the ultra-slim speaker is a curved black
base to allow them to sit vertically on a shelf, stand, or equipment cabinet. In
addition, the speaker includes two "kick-stands" that attach to the back of the
cabinet that allow you rest the loudspeaker horizontally on a flat surface and
use it as a center-channel speaker. Dimensions of speaker:
- Wall-Mounted: 6.4375" (w) x 25.3125" (h) x 2.0" (d)
- Vertical Base: 9.75" (w) x 26.5" (h), 6.75" (d)
- Horizontal Kick Stands: 25.3125" (w) x 6.4375" (h) x 3.875" (d)
Note: The logo on the grille is magnetic and can move and rotate to the proper
atheistically pleasing location in any orientation.
Break-in Period: Allow approximately 72 hours of break-in at
90 dB (moderate listening levels) before any critical listening.