MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker - Dreamedia AV
MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker - Dreamedia AV
MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker - Dreamedia AV
Vendor: MartinLogan

MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker

Electrostatic on-wall speaker with deep bass

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MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker

Unveiling the MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker

Imagine a sound so clear and precise it elevates your home theater experience to the realms of the extraordinary. The MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker, finished in a sophisticated black, promises to do just that. This speaker is not just a device; it's an invitation to audio purists and home theater enthusiasts to indulge in a listening experience that is nothing short of transformative.

The Pinnacle of Sound Engineering

At the heart of the ElectroMotion EFX lies the CLS XStat electrostatic transducer, a marvel of audio technology. This advanced component is renowned for its ability to reproduce sounds with an unrivaled level of clarity and detail. The electrostatic panel, measuring a generous 6.5" x 40", offers a radiating area of 259 in², which ensures a broad and immersive soundstage that will fill your room with pristine audio.

A Symphony of Specifications

  • Transducers: Dual high-performance elements – an XStat CLS electrostatic transducer paired with a robust 6.5" woofer.
  • Frequency Response: A wide range of 42 - 22,000 Hz for full-bodied sound.
  • Sensitivity: 91 dB, enabling dynamic audio output even at lower volumes.
  • Impedance: 6 Ohms, making the speaker compatible with a variety of amplifiers.
  • Recommended Amplifier Power: 20‒400 watts per channel, offering versatility in setup choices.
  • Crossover Frequency: 500Hz, for a smooth transition between high and low frequencies.

Designed to Impress

The ElectroMotion EFX is elegance personified with its slim on-wall profile. At just 6.5 inches in depth, it defies the conventional bulky speaker design, instead offering a sleek form that enhances your space without intruding upon it. The included wall brackets make mounting a breeze, while the rotatable design allows for a customizable audio direction, ensuring the perfect surround sound experience.

Advanced Technologies for Unmatched Performance

MartinLogan's commitment to innovation is evident in every aspect of the ElectroMotion EFX:

  • AirFrame Technology: The ultra-rigid extruded aluminum frame not only adds to the speaker's durability but also ensures that the audio performance remains pure and unaffected by vibrations.
  • Vacuum Bonding and MicroPerf Stat Panels: These features contribute to the speaker's efficiency, allowing it to deliver sound with extraordinary precision.
  • Custom Components: From air core coils to polyester capacitors, each component is carefully selected to enhance audio performance.

Empowering the Listener

The ElectroMotion EFX is not just about its impressive hardware. It's also about giving you control over your audio experience. With compatibility for room correction software, you can fine-tune the midrange to suit your listening environment perfectly. This level of customization ensures that the speaker's performance is optimized for your unique space.

Connectivity and Ease of Use

Connectivity should never be a concern, and with the ElectroMotion EFX, it isn't. The elegant push-pin design for speaker cable ensures a secure connection, while also accommodating banana terminated speaker cables. The convenience extends to power requirements as well; simply plug the speaker into a wall outlet to 'charge' the panels, and you're set for an uninterrupted auditory journey.

The Dreamedia Difference

As experts in home theater technology, we at Dreamedia understand the significance of each feature and how it translates to your experience. When you choose the ElectroMotion EFX, you're not just purchasing a speaker – you're investing in a piece of art that will elevate every sound, every note, and every beat to a level of clarity and depth that must be heard to be believed. Plus, Dreamedia is here to design and integrate this masterpiece seamlessly into your existing system.

The Pros that Make a Difference

  • Detailed Sound Reproduction: Experience every nuance of your audio with exceptional clarity.
  • Sleek On-Wall Design: A modern aesthetic that saves floor space without sacrificing performance.
  • High-Quality Electrostatic Technology: Enjoy a level of sound quality typically reserved for the most discerning audiophiles.
  • Powerful Bass Output: The dual 6-1/2" woofers deliver robust bass that complements the electrostatic highs.
  • Flexible Connection Options: Bi-wire binding posts provide versatility for audiophiles with specific cabling preferences.
  • Hand-Built Crossover: Precision in sound reproduction is guaranteed with meticulously crafted crossover components.
  • Versatile Mounting: Whether as a wall-mounted piece or a high-performance surround speaker, the EFX adapts to your needs.

A Sound Investment

The MartinLogan ElectroMotion EFX represents not just an audio equipment purchase but an investment in aural excellence. Its ability to reproduce vocal tones, especially female vocals, with such authenticity will leave you mesmerized. The speaker's efficiency, despite its electrostatic design, ensures that it pairs beautifully with a wide range of amplifiers and components.

Join the MartinLogan Family

When you choose the ElectroMotion EFX, you're joining a family of audiophiles who appreciate the finer things in sound. It's designed to complement other MartinLogan electrostatic loudspeakers, allowing for a cohesive and comprehensive home theater setup that will be the envy of all who experience it.

Experience the ElectroMotion EFX Today

The MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker is more than just a speaker; it's a statement—a testament to exquisite audio and refined design. Whether you're watching a thrilling blockbuster, enjoying your favorite symphony, or simply unwinding with some smooth jazz, the ElectroMotion EFX will transport you to the heart of the performance.

At Dreamedia, we are committed to helping you realize the home theater system of your dreams. With the ElectroMotion EFX, the dream is within reach. Immerse yourself in the world of high-fidelity sound and let the music move you.

Experience the MartinLogan ElectroMotion EFX today and hear what you've been missing.

Our Review

MartinLogan ElectroMotion EFX Electrostatic On-Wall Speaker - Black Review


MartinLogan is a name that resonates with audiophiles and casual listeners alike, known for their remarkable electrostatic speaker designs that combine both form and function. The ElectroMotion EFX is no exception, presenting a sleek, space-saving solution for those seeking the high-fidelity audio experience synonymous with the brand.



The ElectroMotion EFX boasts an unobtrusive yet elegant silhouette, making it a visually appealing addition to any room. Available in satin and gloss black finishes, the speaker exudes a contemporary charm that complements modern interiors. Its slim profile, standing 52 inches tall, is not just an aesthetic statement but a thoughtful design choice that integrates seamlessly into living spaces without dominating them.

Build Quality

MartinLogan's dedication to craftsmanship is evident in the EFX's robust build. The panel's sturdiness and the overall construction suggest longevity, while the meticulous assembly ensures consistent performance. The materials chosen reflect the brand's commitment to quality, which, in this case, is not just about sound but also about the tactile and visual experience of the product.

Installation and Mounting

The installation of the ElectroMotion EFX is straightforward, with clear instructions that enable a hassle-free setup. The speaker's on-wall design requires some consideration for positioning to optimize sound quality, but the included mounting bracket aids in a secure and stable installation.


Electrostatic Technology

The heart of the EFX's performance lies in its XStat CLS (Curvilinear Line Source) electrostatic transducer. This technology is revered for its ability to reproduce sound with incredible detail and transparency. Electrostatic speakers work by moving air using a large, thin, electrically charged diaphragm between two conductive panels, resulting in a sound that is often described as lifelike and three-dimensional.

Bass Performance

Complementing the electrostatic panel is an 8-inch high-excursion woofer, designed to deliver a robust bass response. While the EFX's bass performance is commendable for its size and design, those seeking earth-shattering lows may find it necessary to pair the speaker with a dedicated subwoofer.


MartinLogan's attention to detail extends to the EFX's connectivity options. The push-pin design for speaker cables is elegant and ensures a secure connection, while the inclusion of bi-wire binding posts offers flexibility for audiophiles who prefer this method for potentially improved sound quality.

Power Requirements

Unique to electrostatic speakers like the EFX is the need for power to 'charge' the panels. This requirement is a small trade-off for the exceptional sound quality delivered by the electrostatic technology and is easily accommodated by the proximity of a power outlet.


Sound Quality

The EFX shines in its sound reproduction, characterized by a level of detail that brings out the nuances in music and the clarity in dialogues. The frequency response is wide, and with a sensitivity of 91dB into a 6 Ohm load, the EFX is capable of delivering a full and rich sound that belies its slender frame.

Sound Stage and Imaging

Creating a broad and immersive sound stage is one of the challenges for on-wall speakers. The EFX, while offering a precise and focused audio image, may require careful placement within the room to achieve the optimal sound stage. The 'sweet spot' is narrower compared to traditional speakers, which is a consideration for those who value a more enveloping sound field.

Integration with Home Theater Systems

For a cohesive home theater setup, the EFX can be paired with other MartinLogan electrostatic speakers, ensuring a timbre-matched and harmonious audio experience. The speaker's efficiency and compatibility with a wide range of components make it a versatile choice for both stereo and multi-channel systems.

Dynamics and Volume

The EFX's ability to handle dynamic content is impressive. It can play loud with a sense of ease, demonstrating both snap and kick when required. This capability ensures that whether you're watching an action-packed movie or enjoying a live concert recording, the EFX can convey the energy and impact of the performance.

Vocal Reproduction

Vocal clarity, especially in the midrange where the human voice sits, is a particular strength of the EFX. The speaker's electrostatic panel renders female vocals with a transparency and intimacy that can be captivating. The nuances and emotional subtleties of a singer's performance are conveyed with remarkable fidelity.

Pros and Cons

Summary of Advantages

The MartinLogan ElectroMotion EFX brings a host of advantages, including detailed sound reproduction, a sleek on-wall design, and the use of high-quality electrostatic technology. Its slim form factor saves floor space while not compromising on sound quality, and its flexibility in connection options and compatibility with other MartinLogan products make it a strong contender in its category.

Summary of Limitations

However, potential buyers should consider the limitations of the sound stage breadth and the need for precise placement. Additionally, while the bass output is substantial, it may not satisfy those seeking a profound low-frequency experience without the aid of a subwoofer.

Comparisons with Similar Products

When compared to other on-wall speakers, the EFX's electrostatic technology sets it apart, offering a level of detail that is hard to match. However, other products may offer a wider sound stage or more pronounced bass without the need for additional subwoofers. It's important to weigh these factors based on personal preferences and listening habits.

Final Thoughts

The MartinLogan ElectroMotion EFX is a testament to the brand's expertise in electrostatic speaker design. It's a product that appeals to those who prioritize audio quality and aesthetic elegance. While it commands a premium price, its performance justifies the investment for enthusiasts looking for exceptional sound without compromising on living space. The EFX is best suited for users who appreciate the nuances of high-resolution audio and are willing to accommodate its placement and power requirements for the sake of an unparalleled listening experience.


Technical Specifications

  • Transducer: CLS XStat electrostatic transducer
  • Panel Dimensions: 6.5" x 40" (16.5 x 101.6cm)
  • Radiating Area: 259 in² (1,670 cm²)
  • Low-Frequency Driver: Two 6.5" (16.5cm) high excursion, high-rigidity paper cones with extended throw driver assembly, non-resonant asymmetrical chamber format
  • Sensitivity: 91 dB/2.83 volts/meter
  • Impedance: 6 Ohms, 1.6 at 20kHz. Compatible with 4, 6, or 8 Ohm rated amplifiers.
  • Recommended Amplifier Power: 20‒400 watts per channel
  • Crossover Frequency: 500Hz
  • Components: Custom-wound audio transformer, air core coils, low DCR steel laminate inductors, polyester capacitors
  • Frequency Response: 68-22,000 Hz ±3dB
  • Horizontal Dispersion: 30°
  • Vertical Dispersion: 28" (71cm) line source
  • High Frequency Transducer: XStat CLS electrostatic transducer
  • Low Frequency Transducer: 6.5" (16.5cm) high excursion, fiber cone with extended throw drive assembly; bass reflex
  • Inputs: Custom 5-way binding posts
  • Power Draw: 2W each, <1W each
  • Weight: 24.5 lbs. (11.1 kg)
  • Dimensions: 48.8", 9.4", 6.5"


  • Design: Slim on-wall profile with a depth of just 6.5 inches
  • Mounting: Wall-mountable with included brackets
  • Rotatable: Yes, with pivoting wall bracket for customizable surround sound experience
  • Color: Black
  • Advanced Technology: Incorporates MartinLogan's advanced CLS XStat transducer within an ultra-ridged extruded aluminum AirFrame
  • Vacuum Bonding and MicroPerf Stat Panels: Yes, for enhanced efficiency and precision
  • Audio Performance: Capable of reproducing ambient noises with high precision, comparable to Beryllium or high-quality soft dome, aluminum, or titanium tweeters
  • Room Correction Software Compatibility: Yes, for addressing midrange response issues

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