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3-Way Tower Loudspeaker: The MartinLogan Motion 20 tower
loudspeaker employs a 3-way speaker design and features MartinLogan's advanced
resolution Folded Motion tweeter, a 5.5" aluminum cone midrange driver, and one
5.5" aluminum cone midbass woofer. Pairing these trio of drivers together
creates a dynamic full-range sound with an expansive soundstage.
- Folded Motion Tweeter: MartinLogan's Folded Motion tweeter
helps give the Motion 20 tower 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 (80°x80°)
to create a realistic and carefully etched sound stage.
- Dual Aluminum Cone Woofers w/ Rear Firing Bass Port: The
MartinLogan Motion 20 loudspeaker features a 5.5" aluminum cone midrange
woofer and a 5.5" aluminum cone midbass woofer housed in separate
non-resonant asymmetrical chambers. Each aluminum cone woofer uses a rigid
structured dust cap to reduce cone break-up and distortion. The midrange
woofer promotes an even more open, revealing, and authentic sound in the
critical midrange frequencies. The midbass woofer is paired with the
rear-firing bass port to create increased cone area delivering higher output
and audibly richer, deeper bass performance.
Precision Vojtko Crossovers: To seamlessly blend the audio
output from the Folded Motion tweeter, 5.5" midrange driver, and dual 6.5" bass
woofers, the Motion 20 tower speaker features two precision Vojtko crossovers
(500/2,600Hz) utilizing custom air core coil and low DCR steel laminate
inductors, polyester film capacitors in series, and low DF electrolytic
capacitors in parallel.
High-Gloss Cabinet: Complementing the Motion 20
loudspeaker's sonic accuracy is its elegant, yet understated styling. A
high-gloss, piano black or black cherrywood finish, along with MartinLogan's
signature perforated grille, give the Motion 20 speaker an elegant and timeless
look that will blend into almost any decor.
Bi-Wirable Binding Post: The MartinLogan Motion 20 features
bi-wirable binding posts and provide the ultimate level of flexibility for
connection and setup. MartinLogan's proprietary tool-less binding posts simplify
cable connection and management. Two sets are supplied; one connected to the
tweeter and midrange, while the other is connected to the dual woofers. You can
choose to bi-wire/bi-amp the Motion 20 loudspeaker, or use jumper clips between
the binding post sets for a single wire-connection. The binding posts will
accept bare wire (16- to 8-gauge), pin-connectors, spade-connectors, and banana
plugs (single only).
Interchangeable Feet: The MartinLogan Motion 20 tower
loudspeaker includes four pre-installed rubber feet for tile and hardwood
floors. You can replace the pre-installed rubber feet with four metal spiked
feet for carpeted flooring. Both the rubber and spiked feet are threaded so they
can be adjusted to non-level floors. The spiked feed add approximately 0.875" to
the height of the speaker.
Placement: Although the speakers are designed to deliver a
superb sonic performance when placed close to a wall, you may notice improved
imaging and detail if you are able to place the speakers (measured from the
tweeter and woofers) 2' to 3' from the front wall and 2' or more from the side
walls. To achieve optimum stereo imaging it is recommend that you aim the
speakers toward your primary listening position.
Break-in Period: Allow approximately 72 hours of break-in at
90 dB (moderate listening levels) before any critical listening.