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:
$1,695.00 each

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Feature Specifications

Specifications are subject to change without notice

Frequency Response

61–20,000 Hz ±3dB

Horizontal Dispersion


High Frequency Transducer

1" (2.5cm) neodymium soft dome

Mid Frequency Transducer

Patented CLS™ Generation 2 MicroPerf electrostatic transducer

» Panel Dimensions

5.4" x 15" (13.7 x 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


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.

Recommended Amplifier Power

20—300 watts per channel

Crossover Frequency

450, 4000 Hz


Air core coils


Line level, Custom 5-way binding posts


21 lbs. (9.5 kg)

Dimensions (with non-skid feet)

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

Dimensions (with wall brackets)

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

Customer Reviews For Feature

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