ElectroMotion ESL

The ElectroMotion ESL represents 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-ESL performs more like a mini-flagship than an entry level audiophile speaker. 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.
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.

Specifications

Specifications are subject to change without notice

Frequency Response	42–22,000 Hz ±3dB
Recommended Amplifier Power	20—300 watts per channel
Horizontal Dispersion	30°
Vertical Dispersion	34″ (71cm) line source
Sensitivity	91 dB/2.83 volts/meter
Impedance	6 Ohms, 1.6 @ 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.
Crossover Frequency	500Hz
High Frequency Transducer	XStat™ CLS™ electrostaic transducer » Panel Dimensions: 34″ x 8.6″ (86 x 22cm) » Radiating Area: 292 in² (1,892 cm² )
Low Frequency Transducer	8″ (20.3cm) high excursion, high-rigidity paper cone with extended throw drive assembly, non-resonance asymmetrical chamber format; bass reflex
Components	Custom-wound audio transformer, air core coils, large steel laminate inductors, polyester capacitors, and low DF electrolytic capacitors
Inputs	Push style with banana jacks
Weight	35.5 lbs. (16.1 kg)
Dimensions	52.1″ x 9″ x 16.3 ” (132.3cm x 22.9cm x 41.4cm)