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The ElectroMotion ESL (EM-ESL) represents a bold new direction for electrostatic loudspeaker design. Featuring a full-sized 34-inch tall curvilinear XStat electrostatic transducer and precision 8-inch high-excursion, audiophile grade, doped fiber cone woofer, the new EM-ESL performs more like a mini-flagship than an entry level audiophile speaker. Along with sensitivity rated at 91dB into 6 Ohms, the EM-ESL is capable of being effortlessly powered by both receivers and high-end amplifiers alike. Designed for both 2-channel music enthusiasts and those seeking the worlds most articulate and dynamic multi-channel home theater systems, the EM-ESL is the most compelling ‘affordable’ audiophile-grade speaker ever brought to market.
XStat Electrostatic Panel ElectroMotion ESL's XStat electrostatic MicroPerf panel is housed within a radical aluminum and composite AirFrame similar to those found on MartinLogan's flagship products. AirFrame technology rigidifies the electrostatic panel without obstructing playable surface area or interfering with ambience enriching dipole sound radiation. MicroPerf design optimizes the individual holes of the EM-ESL's electrostatic panel, substantially increasing diaphragm radiating area without compromising structural integrity. The resulting increase in output capability and efficiency allows the EM-ESL's panel to enjoy a substantial leap in bandwidth and dynamics without growing larger. A unique XStat electrostatic transducer was developed for the EM-ESL reducing the gauge thickness of the panel's steel stators which makes the panel is so visually transparent it nearly vanishes when you're sitting and listening.
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 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 phase. 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 light-weight diaphragm eliminates cone flexure and maximizes 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, 1/4-20 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.
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