Martin Logan 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 world's 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 will describe ElectroMotion ESL as the second coming of the legendary Aerius electrostatic speaker, which debuted in 1992 and sold in record numbers. The new ESL, however, boasts a 40 percent more radiating surface, a superbly integrated and authoritative bass performance, and a sensitivity rated at 91dB. In addition, the ESL can be 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 ambiance-enriching dipole sound radiation. At the same time, an AirFrame provides electrical and acoustical isolation, minimizing intermodulation 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 output capability and efficiency increase allow 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.

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The MartinLogan ElectroMotion ESL brings the legendary transparency of electrostatic loudspeakers to a wider audience, combining a full-size XStat™ CLS™ electrostatic panel with a high-performance 8-inch dynamic woofer in an elegant hybrid floorstanding design. Created to deliver the unmistakable speed, openness, and realism that have defined MartinLogan for decades, the ElectroMotion ESL offers an immersive listening experience that excels with both high-resolution music and home theater applications.

Its 34-inch curvilinear XStat™ electrostatic transducer reproduces vocals and instruments with extraordinary accuracy, revealing subtle musical details that conventional cone speakers often miss. The lightweight diaphragm responds almost instantaneously to the audio signal, producing exceptionally low distortion, lightning-fast transient response, and a remarkably transparent soundstage. MartinLogan's proprietary Vojtko™ crossover seamlessly integrates the electrostatic panel with the 8-inch bass driver, creating a coherent and natural presentation across the frequency spectrum.

Supporting the electrostatic panel is MartinLogan's rigid AirFrame™ structure, engineered to minimize vibration and resonance while maintaining precise panel alignment. The high-excursion 8-inch paper cone woofer, housed in a bass reflex enclosure, provides controlled, musical bass that extends to 42 Hz, complementing the speed and clarity of the electrostatic panel without sacrificing coherence or detail. Custom ETC™ spikes further enhance stability and acoustic performance by reducing unwanted cabinet vibrations.

Ideal for discerning audiophiles and home theater enthusiasts alike, the ElectroMotion ESL delivers the spacious imaging, natural tonal balance, and breathtaking realism that have made MartinLogan electrostatic speakers world-renowned. Its combination of advanced electrostatic technology, refined engineering, and elegant design makes it one of the most accessible and rewarding hybrid electrostatic loudspeakers available.

  • Component type: Hybrid electrostatic floorstanding speaker

  • High-frequency / midrange driver: 34-inch XStat™ CLS™ curvilinear electrostatic transducer

  • Electrostatic panel dimensions: 34 × 8.6 in (86.4 × 21.8 cm)

  • Electrostatic radiating area: 292 sq in (1,884 cm²)

  • Low-frequency driver: 8-inch high-excursion paper cone woofer with bass reflex enclosure

  • Frequency response: 42 Hz – 22 kHz (±3 dB)

  • Sensitivity: 91 dB (2.83V/1m)

  • Impedance: 6 ohms (1.6 ohms minimum at 20 kHz)

  • Recommended amplifier power: 20–300 W per channel

  • Crossover frequency: 500 Hz

  • Dispersion: 30° horizontal × 34-inch line source vertical

  • Inputs: Custom 5-way binding posts

  • Enclosure: Bass reflex cabinet with AirFrame™ electrostatic panel support

  • Dimensions (H × W × D): 52.1 × 9 × 16.3 in (132.3 × 22.9 × 41.4 cm)

  • Weight: 35.5 lb (16.1 kg) each

  • Finishes: Black

  • Design features: XStat™ CLS™ electrostatic panel, AirFrame™ construction, Vojtko™ crossover, custom-wound audio transformer, low-voltage power supply, Custom ETC™ spikes