Fully Powered On-Wall/Off-Wall Hybrid Electrostatic Loudspeaker

MartinLogan's fully powered, electrostatic on-wall speaker uses built-in amplifier to reduce wire clutter.

Internally powered with a high-resolution 150 watt switching amplifier the Feature allows an unprecedented level of system connection flexibility. A standard RCA line-level input minimizes wire clutter by connecting directly to on-wall televisions (and other devices) without the need for external amplifiers. Additionally, standard speaker-level connections allow the Feature to integrate with audio systems where RCA connection is not possible. Using the Feature with a traditional receiver will deliver an enhanced sonic experience without the need to upgrade to expensive electronics.

Launched in 2008

Price when discontinued:



Specifications are subject to change without notice

Frequency Response

61–20,000 Hz ±3dB

Recommended Amplifier Power

20‒300 watts per channel

Horizontal Dispersion



Binding Posts: 93 dB/2.83 volts/meter
Line Level: 95 dB/0.1 volts/meter


Binding posts: 2,000 Ohms
Line level RCA: 33,000 Ohms . Compatible with 4, 6, or 8 Ohm rated amplifiers.

Crossover Frequency

450, 4000 Hz

High Frequency Transducer

1" (2.5cm) neodymium soft dome

Mid Frequency Transducer

Patented CLS™ Generation 2 MicroPerf electrostatic transducer.
» Panel Dimensions: 5.4" × 15" (13.7 × 38.1cm)
» Radiating Area: 81 in2 (522 cm2)

Low Frequency Transducer

Two 5.25" (13.4 cm) steel basket, neodymium magnet, paper cone with extended throw driver assembly, non-resonant asymmetrical chamber format; shielded


150 watts


Air core coils


Line level, Custom 5-way binding posts


21 lbs. (9.5 kg)

Dimensions (with wall brackets)

7.3" × 29.75" × 7.9"
(18.6cm × 75.6cm × 20.1cm)

Dimensions (with non-skid feet)

7.6" × 29.75" × 9"
(19.3cm × 75.6cm × 22.9cm)

Customer Reviews For Feature

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