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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.
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.
| ElectroMotion R |
| Application |
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In-Ceiling |
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| Frequency Response |
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37–25kHz ±3dB |
| Dispersion |
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80° x 80° |
| Sensitivity |
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92 dB/2.83 volts/meter |
| Nominal Impedance |
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4 Ohms. Compatible with 4, 6 or 8 ohm rated amplifiers. |
| Recommended Amplifier Power |
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20-300 watts per channel |
| Crossover Frequency |
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2,600 Hz |
| High Frequency Transducer |
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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 Driver |
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8" (20.3cm) aluminum cone with cast aluminum basket. Concave dust cap. |
| Weight |
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8lbs. (3.63kg) each |
| Overall Dimensions |
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11.5" (29.3cm) Diameter
6" (15.2cm) Depth |
| Cut-Out Dimensions |
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10.5" (26.7cm) Diameter
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| Depth Required Behind Wall Surface |
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5.9" (15cm) |
| Projection From Wall Surface |
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.125" (.3cm) |
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