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The ElectroMotionESLrepresents a bold new direction for electrostatic loudspeaker design. Featuring a full-sized 34-inch tall curvilinear XStat™ electrostatic transducer and a superbly integrated high-performance woofer, the new EM-ESLperforms more like a mini-flagship than an entry-level audiophile speaker. Designed for both 2-channel music enthusiasts and those seeking the world's most articulate and dynamic multi-channel home theater systems, the EM-ESLis the most compelling 'affordable' audiophile-grade speaker ever brought to market.
1-year manufacturer's warranty
34" x 8-5/8" CLS™ (Curvilinear Line Source) XSTAT™ electrostatic transducer for wide sound dispersion, excellent clarity, and low distortion
8" high-excursion paper cone woofer (reproduces frequencies below 500 Hz)
bass-reflex (ported) woofer enclosure
external low-voltage DC power supply (included) requires an AC outlet connection to energize the electrostatic panel
high-performance Vojtko™ crossover network with custom air core coil, low DCR steel laminate inductors, polyester film capacitors, and low DF electrolytic capacitors
frequency response: 42-22,000 Hz (±3dB)
sensitivity: 91 dB
impedance: 6 ohms
recommended amplifier power: 20-300 watts
CLS™ XStat Transducer One of MartinLogan's original breakthroughs, CLS™ (Curvilinear Line Source) technology, has been an essential ingredient of every electrostatic loudspeaker we've produced—and the ElectroMotion ESL is no exception. Proprietary manufacturing methods enable the construction of electrostatic panels as cylindrical sections. Their gentle horizontal curvature solves the problem of obtaining good high-frequency dispersion from a large radiating surface without compromising overall sound quality or reliability.
Controlled Dispersion Sound Radiation Another key attribute of the ElectroMotion ESL is its naturally dipolar radiation pattern. A true dipole, The EM-ESL radiates sound with equal intensity from the front and back of its diaphragm, but the outputs are in opposite phases. As a result, sound waves rippling out toward the sides meet at the speaker's edge and cancel. That and the relatively large size of the ElectroMotion ESL's electrostatic panel cause output at the sides to be very low relative to that of a conventional loudspeaker, which in turn minimizes side-wall reflections that tend to muddle sonic detail and stereo imaging. While the reduction in output to the sides contributes to the astonishing clarity for which electrostats are revered, the energy reflected off the wall behind the speaker opens up and deepens the sound.
Superb Bass Integration To seamlessly blend audio output from the high- and mid-frequency electrostatic panel to the low-frequency woofer the ElectroMotion ESL features a proprietary Vojtko™ topology filter utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel. A precise 8-inch high-excursion, perfectly balanced, audiophile grade, doped fiber cone woofer was custom designed exclusively for The EM-ESL by MartinLogan's in-house engineering team. This woofer precisely optimizes cone suspension and magnetic flux field to produce high levels of bass output and simultaneous precise midrange. The custom woofer's rigid lightweight diaphragm eliminates cone flexure and minimizes response time to achieve remarkably low distortion approaching that of MartinLogan's award-winning electrostatic panel design.
Easy Connections, Solid Adjustable Footing Convenient push-style speaker terminals and curved inserts help guide speaker wire effortlessly into place. The rubber end caps on the terminal are also removable for the use of banana plugs instead of bare wire. The EM-ESL is supplied with sturdy, 3/8-16 ETC™ spikes, which can be used to fine-tune vertical wave launch, enhance stability on thick carpets, and create tighter coupling between speaker and floor to provide a tighter and detailed bass performance. Each spike is conveniently covered by removable rubber end caps if you prefer not to use spikes.
42–22,000 Hz ±3dB
Recommended Amplifier Power
20—300 watts per channel
34" (71cm) line source
91 dB/2.83 volts/meter
6 Ohms, 1.6 @ 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.