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2-Way Bookshelf Loudspeaker: The MartinLogan Motion 15
bookshelf loudspeaker employs a 2-way speaker design and features MartinLogan's
advanced resolution Folded Motion tweeter and a single 5.5" aluminum cone
midbass woofer. Pairing these two drivers together creates a dynamic
full-range sound with an expansive soundstage.
- Folded Motion Tweeter: MartinLogan's Folded Motion
tweeter helps give the Motion 15 bookshelf 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.
- Aluminum Cone Woofer w/ Bass Port: The MartinLogan
Motion 15 bookshelf loudspeaker features a high-excursion 5.5" aluminum cone
woofer with a cast basket housed in a non-resonant asymmetrical chamber with
a rear-firing bass port. The aluminum cone woofer uses a rigid structured
dust cap to reduce cone break-up and distortion. Pairing the 5.5" woofer
with a rear-firing bass port provides higher output and audibly richer,
deeper bass performance.
Precision Crossover: To seamlessly blend the audio output
from the high frequency driver (tweeter) and the midbass driver (woofer), the
Motion 15 loudspeaker features a precision 2,700Hz crossover 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 15
loudspeaker's sonic accuracy is its elegant, yet understated styling. A
high-gloss, piano black, white or black cherrywood finish, along with
MartinLogan's signature perforated grille, give the Motion 15 speaker an elegant
and timeless look that will blend into almost any decor. The speaker cabinet
also features rounded edges and a gently tapered top.
Binding Posts: MartinLogan's proprietary tool-less binding
posts simplify cable connection and management. The binding posts will accept
bare wire (16- to 10-gauge), pin-connectors, spade-connectors, and banana plugs
Break-in Period: Allow approximately 72 hours of break-in at
90 dB (moderate listening levels) before any critical listening.
Mounting Options: The bookshelf loudspeaker comes with 4
rubber self-adhesive feet to help secure them in place on a flat-surface,
prevent slippage, and reduce vibration. The optional PinPoint heavy duty
side-grip wall-mounting bracket (121AM40B,
sold separately) can be used to wall mount the speakers.