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MartinLogan ElectroMotion EM-R

In-ceiling speaker

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$599.00 / ea

Audiogurus Knowledge Base

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  • In-ceiling Surround Sound Speakers



The ElectroMotion R is a premium high-performance in-ceiling speaker that uses a larger 8-inch aluminum woofer and angled Folded Motion tweeter for ultimate-performance in-ceiling applications. The speaker is rotatable to aim sound. The powerful EM-R is the largest ElectroMotion in-ceiling speaker. Utilizing a massive 8-inch high-excursion, high-resolution state-of-the-art woofer specially designed for accurate in-ceiling bass performance, the EM-R delivers powerful low-end bass with accuracy, authority and extension uncommon to traditional in-ceiling loudspeakers.

Folded Motion™ Tweeter

MartinLogan's exquisite Folded Motion tweeter boasts a radiating surface 8-times larger than a typical 1" dome tweeter. 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.

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.

Installers rejoice as the Folded Motion tweeter is mounted at an angle, allowing the entire speaker to rotate to aim sound precisely where you want it.

Stealthy Grilles

MartinLogan's new architectural speakers feature ultra-low profile, paintable micro perforated grilles with no visible bezel for an 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.

Precision-Built,Advanced-Topology Vojtko™ Crossover

Carefully hand-built using only the finest polyester capacitors and air-core coils, the crossover employ's MartinLogan's proprietary Vojtko topology for vanishingly low distortion and seamless driver integration. This precision-tuned network preserves even the most microscopic sonic nuances while handling the full dynamics of any source.

Multi Application Use

The EM-R is suitable for any application in small to large rooms. Ideal for use in a multi-channel home theater as a surround speaker, in a kitchen as 2-channel stereo speaker, or in a hallway as part of a distributed audio system.


Color -
Dimensions (WxHxD) 11.5" Diameter, 6" Depth
Dimensions (WxHxD, metric) 29.3cm Diameter, 15.2cm Depth
Dimensions (notes) Cut-out dimensions: 10.5" (26.7cm) Diameter
Weight (lbs) 8
Unit of measurement ea
Power Handling (Nominal) 20-300 watts per channel
Frequency Response +/-3dB 37–25kHz ±3dB
Sensitivity (1W/m) 92 dB/2.83 volts/meter
Terminals No
Impedance 4 Ohms. Compatible with 4, 6 or 8 ohm rated amplifiers.
Tweeter 1" x 1.4" Folded Motion
Midrange Driver -
Woofer 8" Aluminum Cone
Crossover Frequencies 2,600 Hz
Crossover Type -


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