ElectroMotion IW

High-Performance In-Wall For Small and Mid-Sized Rooms

The ElectroMotion IW is a premium high-performance in-wall speaker that uses a 6.5-inch aluminum cone woofer and Folded Motion tweeter.

$499.00 each
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The Sound of Invisibility

The ElectroMotion® Architectural Series features our award-winning compact Folded Motion® thin film transducer technology, bringing a new standard in acoustical performance to in-wall and in-ceiling applications. Designed for those seeking the world's most articulate and dynamic multi-channel home theater systems, or simply a stealthy 2-channel system, the Architectural Series speakers are voice and timbre matched with one another, as well as the rest of the MartinLogan line of ultra-premium electrostatic and Folded Motion speakers.

Folded Motion® Tweeters

Folded Motion Tweeters work 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.

Installer Friendly

A robust mounting-lock system allows quick, trouble-free installation. When not in use, the constant-control mounting locks are held securely within a self-contained housing. When moved into place during installation, they couple the speaker's chassis firmly to the ceiling. And if the speaker is ever removed, the locks retract and latch themselves back in their housings.

Stealthy Grilles

ElectroMotion architectural speakers feature ultra-low profile, paintable micro perforated grilles with no visible bezel for near invisible integration into any wall or ceiling. A magnetic system secures grilles easily into place, reducing the risk of warping or damage during installation.

Press For ElectroMotion IW

MartinLogan’s ESL-X Show Why Electrostatic Loudspeakers are so Beloved

"While listening, it brought to mind what may be the best part of listening to the ESL-X speakers: They are forgiving enough to deliver the traits I’ve already mentioned, without sacrificing quality. What I mean by that is that is that some speakers sound good with classical music, others sound good with rock and pop. Throw anything at the ESL-X and I think they will deliver high levels of enjoyment that will make you forget that you are critically listening. Instead, you’ll simply want to bob your head like Angus Young or stomp your feet like Neil Young when cranking up the ESL-Xs."

—Robert Archer, CE Pro
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ElectroMotion IW Specifications

Specifications are subject to change without notice

Frequency Response

47–25kHz ±3dB

Horizontal Dispersion


Vertical Dispersion


High Frequency Transducer

1" x 1.4" (2.6cm x 3.6cm) Folded Motion Transducer with 5.25" x 1.75" (13.3cm x 4.4cm) diaphragm.

Low Frequency Transducer

6.5" (16.5cm) aluminum cone with cast aluminum basket. Concave dust cap.


90 dB/2.83 volts/meter


4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.

Recommended Amplifier Power

20—200 watts per channel

Crossover Frequency

2,500 Hz


Custom air core coil inductors. Polyester film capacitors in series and low DF electrolytic capacitors in parallel. Overall system thermal/cur- rent protection.


Push style binding posts with banana jack.


5.5 lbs. (2.5 kg)

Dimensions (overall size)

11" x 8.5" x 3.925 "
(27.9cm x 21.6cm x 10cm)

Cut-Out Dimensions

7.875" x 10.25"
(20 cm x 26 cm)

Projection From Wall Surface

.125" (.3cm)

Depth Behind Wall Surface

3.8" (9.7 cm)

Customer Reviews For ElectroMotion IW

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