Brochure

Surround yourself with our slim, on-wall EFX hybrid electrostatic loudspeaker,
featuring XStat™ technology that dramatically reduces cabinet size, yet
establishes new standards for efficiency, dynamics and precision.
The EFX, MartinLogan’s slimmest reference quality on-wall solution to date, provides loyal electrostatic speaker
enthusiasts the flexibility for either surround or front solutions in a slim, space saving package. Perfectly suited
to hang on the wall next to a flat panel TV, the EFX comes with a sturdy pivoting wall bracket, making it easy
to mount and adjust for the best possible multi-channel movie and music experience.
Featuring an advanced crossover topology derived from the MartinLogan CLX™ loudspeaker, the EFX
crossover utilizes precision audiophile-grade metal film capacitors and high-purity air-core coils. This design
flawlessly preserves microscopic subtleties while handling the broadest range of dynamics contained within
even the most demanding sonic source.
ESL Series
SPECIFICATIONS
Frequency Response
68 – 22,000 Hz ±3dB
Horizontal Dispersion
30°
Vertical Dispersion
28” (71 cm) line source
High Frequency Transducer
XStat™ CLS™ electrostatic transducer
» Panel Dimensions
28” x 8.6” (71.1 x 21.8cm)
» Radiating Area
241 in2 (1,550 cm2)
Low Frequency Transducer
6.5” (16.5 cm) high excursion, fiber cone with
extended throw drive assembly; bass reflex
Sensitivity
90 dB/2.83 volts/meter
Impedance
6 Ohms, 1.3 at 20kHz. Compatible with
4, 6, or 8 Ohm rated amplifiers
Recommended Amplifier Power
20 – 300 watts per channel
Crossover Frequency
530Hz
Components
Custom-wound E-I core transformer, air core coils,
metal film capacitors
Inputs
Custom 5-way bi-wire tool-less binding posts
Power Draw
Idle: < 1W/channel
Max: 2W/channel
Weight
24.5 lbs. (11.1 kg)
Dimensions
48.8” x 9.4” x 6.5”
(123.9cm x 23.8cm x 16.5cm)
Specifications are subject to change without notice.
EFX