The ElectroMotion ESL (EM-ESL) represents a brave new direction for electrostatic loudspeaker design. Featuring a full-sized 34-inch tall curvilinear XStat™ electrostatic transducer the new ESL performs more like a mini-flagship than an entry level audiophile speaker. Long time MartinLogan enthusiasts are sure to describe ElectroMotion ESL as the second-coming of the legendary Aerius electrostatic speaker which debuted in 1992 and went on to sell in record numbers. The new ESL, however, boasts 40 percent more radiating surface, a superbly integrated and authoritative bass performance, and a sensitivity rated at 91dB. In addition, the ESL is capable of being effortlessly powered by both receivers and high-end amplifiers alike.
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. At the same time, an AirFrame provides electrical and acoustical isolation, minimizing intermodulated distortion caused by vibration and resonance while enhancing imaging, low-level sonic detail, accuracy, and efficiency. MicroPerf design optimizes the individual holes of The EM-ESL‘s electrostatic panel. MicroPerf design substantially increases diaphragm radiating area, compared to early generations—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. For example, The EM-ESL‘s XStat electrostatic panel features 129 square inches of sound radiating surface on both the front and back and a sensitivity of 91dB into 6 Ohms. The Aerius, well received its day, only had 93 square inches and a sensitivity of 89dB into 4 Ohms.
A unique XStat™ transducer was developed for the ElectroMotion ESL to reduce the gauge thickness of the electrostatic panel’s steel stators. The reduced gauge does not alter the performance characteristics of the panel. However, as a natural byproduct of tighter build tolerances, it does increase the visual transparency of the panel. The EM-ESL‘s new XStat panel is so visually transparent it nearly vanishes when you’re sitting and listening.
Handles 200W peak power
For robust and controlled audio that is crisp and clear.
8″ high-excursion, high-rigidity, doped fiber and paper woofer cone
Features an extended throw driver assembly and asymmetrical chamber format to deliver amazing lows.
34″ Xstat Curvilinear Line Source (CLS) electrostatic transducer
With 292 sq. in. radiating surface for brilliant audio. Controlled dispersion sound radiation minimizes side-wall reflections.
Rigidifies the electrostatic panel without interfering sound radiation and provides electrical and acoustical isolation to eliminate intermodulated distortion caused by vibration and resonance.
Vojtko topology crossover
Uses a custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series and low DF electrolytic capacitors in parallel.
Energy transfer coupler spikes
Can be used to fine-tune vertical wave launch, improve stability on thick carpets and create tight coupling between the speaker and floor for detailed bass.
Push-style speaker terminals
With curved inserts for an easy connection. Rubber end caps allow for the use of banana plugs instead of bare wire.
42Hz – 22kHz frequency response
For faithful sound reproduction.
For powerful sound.
6 ohms impedance
Conducts power through the speakers.