Martin Logan EFX - On Wall Speaker - Piece

The EFX is a slim, on-wall hybrid electrostatic loudspeaker built around MartinLogan's XStat CLS transducer, designed as a versatile surround speaker for any MartinLogan home theater system. At just 6.5in deep, it mounts to the wall on a pivoting bracket to free up floor space while delivering the precision and dynamics of MartinLogan's electrostatic heritage.

• XStat CLS electrostatic transducer housed in an ultra-rigid extruded aluminium AirFrame
• Advanced vacuum bonding and MicroPerf stat panels for greater efficiency and precision
• Slim 6.5in-deep on-wall profile with included wall brackets
• Pivoting wall bracket to focus the surround sound experience
• Proprietary Vojtko filtering, hand-built with point-to-point wiring, polypropylene capacitors, air-core coils, and a custom-wound E-I core transformer
• Custom tool-less 5-way binding posts for simplified cable connection
• Low-voltage DC power supply, eliminating the need for a traditional IEC power cord

• Frequency response: 68–22,000Hz ±3dB
• Recommended amplifier power: 20–300 watts per channel
• Horizontal dispersion: 30°
• Vertical dispersion: 28in (71cm) line source
• Sensitivity: 90dB/2.83V/meter
• Impedance: 6Ω, 1.3Ω @ 20kHz, compatible with 4, 6, or 8Ω rated amplifiers
• Crossover frequency: 530Hz
• High frequency transducer: XStat CLS electrostatic transducer, 28in x 8.6in (71 x 22cm) panel, 241in² (1,562cm²) radiating area
• Low frequency transducer: 6.5in (16.5cm) high-excursion fiber cone with extended-throw drive assembly, bass reflex
• Components: custom-wound E-I core transformer, air core coils, metal film capacitors
• Inputs: custom 5-way binding posts
• Power draw: 2W max, <1W standby (each)
• Weight: 24.5lb (11.1kg)
• Dimensions: 48.8in x 9.4in x 6.5in (123.9cm x 23.8cm x 16.5cm)