{"product_id":"martinlogan-efx-on-wall-electrostatic-speakers","title":"MartinLogan EFX On-Wall Electrostatic Speakers | The Grid","description":"\u003ch1\u003e\u003cspan\u003eMartinLogan EFX On-Wall Electrostatic Loudspeakers\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMartinLogan EFX\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a slim, wall-mounted hybrid electrostatic loudspeaker designed for high-performance surround channels or space-conscious front-channel applications. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e28 × 8.6-inch XStat CLS electrostatic panel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with 241 square inches of radiating area is paired with a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6.5-inch high-excursion fiber-cone woofer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, delivering MartinLogan electrostatic performance from an enclosure only \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6.5 inches deep\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor a MartinLogan home theater, the EFX provides an important advantage: surround channels can use the same fundamental \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eXStat electrostatic technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e as the front soundstage rather than transitioning to a conventional dynamic speaker.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e28-Inch XStat CLS Electrostatic Panel\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe EFX uses MartinLogan's \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eXStat Curvilinear Line Source (CLS) electrostatic transducer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, measuring \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e28 × 8.6 inches\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e241 square inches of radiating area\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe low-mass electrostatic diaphragm handles frequencies above the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e530 Hz crossover point\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, providing the speed, detail, and controlled radiation associated with MartinLogan ESL designs. CLS curvature produces \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e30° horizontal dispersion\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, while the 28-inch panel functions as a vertical line source. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMicroPerf XStat Technology\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eMartinLogan's \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMicroPerf stator technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e increases the amount of exposed electrostatic diaphragm area without requiring a larger panel. The design maintains the rigidity required by the stators while allowing more of the diaphragm to contribute directly to acoustic output. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/electrostatic-technology?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis allows the EFX to retain a narrow, visually lightweight profile while providing a substantial electrostatic radiating surface.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e6.5-Inch High-Excursion Woofer\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eLow frequencies are reproduced by a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6.5-inch high-excursion fiber-cone woofer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with an extended-throw motor assembly in a bass-reflex enclosure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe woofer integrates with the XStat panel at \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e530 Hz\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, producing a complete specified frequency response of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e68 Hz–22 kHz ±3 dB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor theater systems requiring deeper bass, the EFX is naturally suited to operation with one or more properly integrated subwoofers.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003ePurpose-Built for On-Wall Installation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe EFX measures just \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6.5 inches deep\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and includes a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epivoting wall bracket\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, allowing the speaker to be aimed toward the listening area after installation. MartinLogan specifically designed the EFX for use as either an on-wall surround speaker or a slim front-channel solution alongside a television or projection system. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat makes the EFX particularly useful in premium home theaters where electrostatic surround performance is desired without placing floorstanding speakers around the room.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eAudiophile-Grade Passive Crossover\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe EFX uses an advanced passive crossover topology derived from MartinLogan's electrostatic loudspeaker development.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts network incorporates a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecustom-wound E-I core transformer, air-core inductors, and metal-film capacitors\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, integrating the dynamic woofer with the electrostatic panel while preserving low-level information and dynamic capability. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eAmplifier Matching\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe MartinLogan EFX has \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e90 dB sensitivity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, a nominal impedance of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6 ohms\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, and an impedance of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1.3 ohms at 20 kHz\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. MartinLogan specifies compatibility with amplifiers rated for 4-, 6-, or 8-ohm loudspeakers and recommends \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e20–300 watts per channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/uploads\/documents\/brochures\/brochure-efx.pdf?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAs with other electrostatic loudspeakers, amplifier stability into the EFX's low high-frequency impedance should be considered alongside rated wattage when selecting amplification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Details\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eMartinLogan EFX\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSeries\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eESL Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eType\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOn-Wall Hybrid Electrostatic Loudspeaker\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency Response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e68 Hz–22 kHz ±3 dB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElectrostatic Transducer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eXStat CLS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePanel Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e28 × 8.6 in \/ 71.1 × 21.8 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRadiating Area\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e241 in² \/ 1,550 cm²\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHorizontal Dispersion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e30°\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eVertical Dispersion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e28 in \/ 71 cm line source\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBass Driver\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e1 × 6.5 in \/ 16.5 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWoofer Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-excursion fiber cone\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eEnclosure\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBass reflex\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCrossover Frequency\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e530 Hz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSensitivity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e90 dB \/ 2.83 V \/ 1 m\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNominal Impedance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e6 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eImpedance at 20 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e1.3 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRecommended Amplification\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e20–300 W\/channel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCrossover Components\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCustom E-I core transformer, air-core coils, metal-film capacitors\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConnections\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eCustom 5-way bi-wire tool-less binding posts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Power Draw\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e2 W each\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eStandby Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e\u0026lt;1 W each\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e48.8 × 9.4 × 6.5 in\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e24.5 lb \/ 11.1 kg each\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWall Mount\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePivoting wall bracket included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eMartinLogan EFX at The Grid HiFi\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe Grid HiFi in Houston specializes in MartinLogan electrostatic loudspeakers and complete high-performance home theater systems.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe EFX is particularly compelling for building a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMartinLogan electrostatic surround system\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e without filling the room with floorstanding loudspeakers. The Grid can determine surround placement and aiming, match amplification, integrate subwoofers, and design the complete theater around the speakers, processor, acoustics, projection, seating, lighting, and control.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBuilding a MartinLogan electrostatic theater? Call The Grid HiFi at (713) 218-8120 for system design and a private consultation.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"MartinLogan","offers":[{"title":"Default Title","offer_id":55166077829457,"sku":null,"price":4399.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/7178\/0945\/files\/6023086254_ef6d70727a_b.jpg?v=1791051075","url":"https:\/\/gridhifi.com\/products\/martinlogan-efx-on-wall-electrostatic-speakers","provider":"The Grid","version":"1.0","type":"link"}