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Discontinued Product

Martin Logan Reserve ESL Series Black Floor Speakers - ETHBLFTD

Abt Model: ETHBLFTD | UPC Code: 877929005795
This product is no longer available.

Product Details

Martin Logan Reserve ESL Series Black Floor Speakers - ETHBLFTD

MartinLogan is proud to announce an advanced combination of sonic technologies establishing an unprecedented new direction for audiophile design. Descended from MartinLogan's renowned CLX™ loudspeaker, the new Ethos features advanced XStat™ electrostatic technology and a proprietary Vojtko™ crossover topology delivering the highest sonic standards of efficiency and precision. An immensely dynamic 8-inch PoweredForce™ woofer and 8-inch passive radiator duo utilize an innovative 24-bit Vojtko DSP (digital signal processing) Engine and powerful 200-watt class-D amplifier to generate effortlessly detailed bass down to 34Hz—from an extremely compact design!


  • XStat™ Transducer A unique XStat™ transducer was developed to exclusively address the specific mechanical requirements of the Ethos. Vertically identical in size and dispersion to the flagship Summit™ X (and taller than the Vantage), Ethos' 9.2-inch (23cm) horizontal panel dimension required a tighter curve to achieve MartinLogan's distinct 30-degree dispersion pattern. To accomplish this MartinLogan engineers reduced the gauge thickness of the steel stators. The reduced gauge does not alter the performance characteristics of the Ethos' electrostatic panel. However, as a natural byproduct of tighter build tolerances, it does increase the visual transparency of the panel. Ethos' new XStat panel is so visually transparent that it nearly vanishes when you're sitting and listening.
  • Hand-Rubbed Wood Finishes Initial shipments of the Ethos will be available in 3 hand-rubbed, real-wood finishes; black ash, dark cherry, and new for 2010, flamed teak. Watch for the full gamut of custom shop finishes to follow soon. In late 2010 flamed teak will be offered as a standard finish on a wider variety of MartinLogan's top-of-the-line models.
  • 24-Bit Vojtko™ Digital Signal Processing (DSP) Engine MartinLogan's dedicated in-house design & engineering team wanted to pack as much bass performance as possible into a sleek, compact design without compromising the detail, speed, and transparency required to keep up with our agile electrostatic panels. To accomplish this MartinLogan designed an extremely precise 24-Bit Vojtko DSP Engine in conjunction with a powerful 200-watt class-D amplifier to harness a stunning low-level performance—uncommon in cabinets this compact.
  • Advanced Vojtko Filtering Proprietary Vojtko filtering technology is utilized for Ethos' electrostatic transducer. This audiophile quality network, derived from the CLX, is carefully hand-built using precision point-to-point wiring, polypropylene capacitors, massive air-core coils, and a custom wound toroidal audio transformer—flawlessly preserving micro-acoustic subtleties while effortlessly handling the broadest range of dynamics contained within even the most demanding sonic source.
  • PoweredForce™ Woofer & Passive Radiator Dynamic Duo Ethos' 24-Bit Vojtko DSP Engine and 200-watt digital amplifier create powerfully detailed bass from a custom designed front-firing 8-inch aluminum-cone PoweredForce woofer and precisely matched down-firing 8-inch passive radiator. This unique radiator enhances bass output, much like a port, but without port induced noise and midrange resonance. Ethos' passive radiator utilizes a full woofer suspension design to achieve maximize linearity during massive excursion. Additionally, Ethos' proprietary intelligent DSP engine allowed our engineers to utilize a smaller-than-average passive radiator to obtain the appropriate level of bass performance required to flawlessly blend with the electrostatic panel while still maintaining a minimal footprint for the cabinet.


  • Frequency Response 34–23,000 Hz ±3dB
  • Horizontal Dispersion 30°
  • Vertical Dispersion 44" (112cm) line source
  • High Frequency Transducer XStat™ CLS™ electrostatic transducer
    • Panel Dimensions 44" × 9.2" (111.8 × 23.4cm)
    • Radiating Area 405 in2 (2,616 cm2)
  • Low Frequency Transducer 8" (20.3cm) cast basket, high excursion, aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format. 8" (20.3cm) cast basket, high excursion, polypropylene cone passive radiator.
  • Amplifier Woofer: 200 watts/channel (4 ohms)
  • Sensitivity 92 dB/2.83 volts/meter
  • Impedance 4 Ohms, 0.8 at 20kHz. Compatible with 4, 6, or 8 Ohm rated amplifiers.
  • Recommended Amplifier Power 20-500 watts per channel
  • Crossover Frequency 375Hz
  • Components Custom-wound toroidal audio transformer, air core coils, polypropylene capacitors. 24-bit DSP based pre-amplifier (used with woofer amplifier).
  • Audio Controls ±10dB under 100 Hz
  • Inputs Custom 5-way binding posts
  • Power Draw Idle: < 1W/channel, Max: 200W/channel

Approximate Dimensions:

  • Depth: 10.73"
  • Height: 59.33"
  • Width: 18.23"

Approximate Weight:

  • Unit: 42 lbs
  • Shipping: 50 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): 1 Year Parts And Labor

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Key Features
XStat Transducer/ Hand Rubbed Wood Finishes/ 24-Bit Vojtko Digital Signal Processing (DSP) Engine/ Advanced Vojtko Filtering/ PoweredForce Woofer And Passive Radiator Dynamic Duo/ 34-23,000 Hz 3dB Frequency Response/ 200 watts/channel (4 ohms) Amplifier/ 92 dB/2.83 volts/meter Sensitivity/ 4 Ohms Impedance/ 375Hz Crossover Frequency/ Black Finish/ Sold As A Pair
More reasons to buy the MartinLogan ETHBLFTD from Abt Electronics
  • is an authorized dealer (Learn More).
  • The MartinLogan ETHBLFTD is Brand New.
  • The MartinLogan ETHBLFTD Ships in a Factory Sealed Box.
Frequency Response375Hz
Impedance4 Ohms
Sensitivity92 dB/2.83 volts/meter
Speaker TypeFloor Standing
Height (inches)59.33"
Width (inches)18.23"
Depth (inches)10.73"
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