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MartinLogan EFX specs

General info

  • Stereo / Front

    Recommended usage:

  • Sealed

    Enclosure type:

  • 68Hz (measured at -3dB) - 22kHz

    Frequency range:

  • 20W - 300W

    Recommended power:

  • 90dB at 2.83V/1m


  • 6 ohms

    Nominal impedance:

  • 2

    Number of drivers:

  • 2-way

    Number of frequency bands:

  • 530Hz

    Crossover frequencies:

Drivers information

  • Woofer / Midbass, Tweeter

    Drivers include:

  • 1 x 6.5 in


  • Kevlar / Glass Fiber / Carbon Fiber

    Woofer/Midbass's cone material:

  • 1 x


  • Other

    Tweeter type:

Other features

  • No

    Built-in amplifier:

  • No

    Built-in digital decoder (DAC):


  • Other

    Enclosure materials:

  • 9.4 in x 48.8 in x 6.5 in

    Dimensions (WxHxD):

  • 24.5 lb


  • Black

    Available color options:

US Availability

  • Sep 07, 2011

    Officially announced:

European Availability

  • Sep 07, 2011

    Officially announced:


  • Official page:

  • Manual:

also know as: MartinLogan ESL Series

If you are interested in using our specs commercially, check out our Separate Speakers specs database licensing page.

Description: MartinLogan is proud to introduce the slim, on-wall EFX hybrid electrostatic loudspeaker, featuring XStat technology, dramatically reducing cabinet size, yet establishing new standards for efficiency, dynamics and precision.

Created by MG3 , Last update by MG28 , Sep 09, 2011


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