MartinLogan ElectroMotion EFX In-Wall Surround Speaker Pair

Get off the floor and onto the wall with the EFX In-Wall Electrostatic Speaker. This versatile on-wall electrostatic is the perfect surround speaker for any MartinLogan home theater system.

Surround Yourself with EFX

MartinLogan is proud to introduce the EFX™ slim on-wall hybrid electrostatic loudspeaker, featuring XStat™ technology, which dramatically reduces cabinet size while setting new standards for efficiency, dynamics, and accuracy.

CLS™ XStat Transducer

Housed within an ultra-wide, radically extruded aluminum AirFrame™, the EFX's new CLS XStat transducer builds on the legacy of MartinLogan's electrostatic heritage with the incorporation of advanced vacuum bonding and microPerf systems, providing even more efficiency and accuracy.

Slim On-Wall Profile

If you won't settle for electrostats next to your new flat-screen TV flat, the EFX is the perfect solution at just 6.5 inches deep. Free up valuable floor space by mounting the EFX to the wall with the included wall brackets. The EFX is also the ultimate high-performance home theater surround speaker and complements MartinLogan’s entire line of electrostatic speakers. The EFX rotates with the swivel wall bracket to easily focus your surround sound experience.

Advanced Vojtko Filter

Proprietary Vojtko filtering technology is used for the EFX electrostatic transducer. This audiophile-quality network, derived from the CLX, is hand-built with precision, point-to-point wiring, polypropylene capacitors, massive coils, and a custom-wound EI core transformer, flawlessly preserving micro-acoustic subtleties while effortlessly handling the widest range of dynamics contained within even the most demanding sound source.

Custom 5-Way Binding Posts and Low-Voltage Power Supply

MartinLogan's proprietary binding posts simplify connection and cable management. The EFX features custom 5-way binding posts and provides the highest level of flexibility for connection and setup. To further simplify setup and cable management, the EFX features a low-voltage DC power supply that eliminates the need for a traditional, heavy IEC power cord.

SPECIFICATIONS

Quantity: 2 In-Wall Speakers

Frequency Response: 68-22,000 Hz ± 3dB

Recommended Amplifier Power: 20-300 watts per channel

Horizontal Dispersion: 30°

Vertical Dispersion: 28 inches line source

Sensitivity: 90dB / 2.83 volts/meter

Impedance: 6 Ohms, 1.3 @ 20kHz Compatible with 4, 6, or 8 Ohm amplifiers

Crossover Frequency: 530Hz

High Frequency Transducer: XStat™ CLS™ Electrostatic Transducer. Panel Size: 28" x 8.65" (71 x 22 cm). Radiating Area: 1,562 cm²

Low Frequency Transducer: 6.5" (16.5 cm) high excursion, fiber cone with extended throw drive assembly, bass reflex

Components: Custom-wound EI core transformer, air core coils, metal film capacitors

Inputs: Custom 5-way binding posts

Power Draw: Maximum: 2 W each Standby: <1 W each

Weight: 24.5 lbs (11.1 kg)

Dimensions: 49" x 9.4" x 6.5" (123.9 x 23.8 x 16.5 cm)