Folded Motion Tweeter: Two 1" x 1.4" Folded Motion tweeters
help give the Motion FX surround 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 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. The two 1" x 1.4" Folded
Motion tweeters have a combined dispersion area of 160°
5.25" Paper Cone Woofer: The MartinLogan Motion FX surround
loudspeaker features a 5.25" paper cone woofer with a cast aluminum basket
housed in a non-resonant asymmetrical chamber. The paper cone woofer uses a
rigid structured dust cap and butyl rubber surround to reduce cone break-up and
distortion. This 5.25" cone woofer provides rich, detailed midrange/midbass.
Precision Vojtko Crossover: To seamlessly blend the audio
output from the dual Folded Motion tweeters and one 5.25" woofers, the Motion
FX loudspeaker features a precision Vojtko crossover (4500Hz) utilizing custom
air core coil and low DCR steel laminate inductors, polyester film capacitors in
series, and low DF electrolytic capacitors in parallel.
Folded Reflex Port Technology: MartinLogan engineers were
faced with a daunting task, create a compact speaker with low-end bass
reproduction found in speakers much larger. After a myriad of prototypes, they
created the Folded Motion Cascading Bass Port. This brilliant solution allows a
long tuned port, which is folded over itself (think of a trombone's tuning arm)
to be compacted and squeezed into the Motion FX loudspeaker. The result is
amazingly detailed low bass that can play at high volumes with minimum
distortion; all thanks to the elegantly simple cascading fold that slows down
and controls the air motion of the bass waves. The Folded Motion Cascading Bass
Port exits the rear-panel of the speaker cabinet.
Spring-Post Connectors: The MartinLogan Motion FX speaker
features two spring-post connectors to attach your speaker wire. The
spring-posts will accept bare wire (16- to 10-gauge), pin-connectors, and banana
plugs (single only). The rubber caps on the spring-post connectors must be
removed to use banana plugs.
Applications: The MartinLogan Motion FX can used as a rear or side
surround speaker in a home theater application for any size room.
Mounting Options: The MartinLogan Motion FX surround
loudspeaker can simply be placed on a table-top, stand, shelf, or other flat
surface. Two self-adhesive rubber feet are included for safe and secure
placement. Using the included keyhole-slot bracket, you can wall-mount the
speaker against a flat wall, in a corner, or angled on a wall.
Break-in Period: Allow approximately 72 hours of break-in at
90 dB (moderate listening levels) before any critical listening.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.