Description
Martin Logan Classic ESL 9 Electrostatic Speakers
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The Classic ESL 9 features all the familiar elements of MartinLogan’s flagship ESL series with some revolutionary refinements. The heart of this exceptional loudspeaker is its 9.2-inch-wide Curvilinear Line Source (CLS) XStat vacuum-bonded electrostatic transducer. Advanced MicroPerf stator technology reveals more of the diaphragm surface area than any other electrostatic panel in this size class, efficiently increasing the narrow panel’s output. Ultra-rigid AirFrame Blade construction reduces performance-robbing vibrations, its shape creating an expressive alignment with the woofer cabinet. Deep bass is rendered with unflinching accuracy and authority by dual 8-inch low-distortion, high-excursion aluminum cone woofers in a beautifully sculpted enclosure.
Advanced MicroPerf stator technology, which allows for almost twice the exposed electrostatic diaphragm surface as a traditional electrostatic panel of the same size. A reinforced electrostatic panel with rigid ClearSpar™ spacers, keeping an exact level of tension on the vacuum-bonded diaphragm without obscuring the beautiful see-through design. Add to these the slender, pointed-arrow design of the new AirFrame™ Blade construction and the result is a powerfully evocative composition creating a harmonious connection between the panel and its woofer cabinet.
Advanced MicroPerf stator technology, which allows for almost twice the exposed electrostatic diaphragm surface as a traditional electrostatic panel of the same size. A reinforced electrostatic panel with rigid ClearSpar™ spacers, keeping an exact level of tension on the vacuum-bonded diaphragm without obscuring the beautiful see-through design. Add to these the slender, pointed-arrow design of the new AirFrame™ Blade construction and the result is a powerfully evocative composition creating a harmonious connection between the panel and its woofer cabinet.
We have reinvented the Classic ESL 9 woofer section. We use two 8-inch laser-engineered low-distortion aluminum cone woofers, balanced in an opposing array, one forward- and one rear-firing. This design greatly reduces cabinet vibrations inherent in same-direction woofer positioning, specifically in the 34Hz to 100Hz range for uniform frequency response resulting in realistic bass effects you can feel.
Specifications:
|
Frequency Response |
34–23,000 Hz ±3dB |
|
Recommended Amplifier Power |
20—400 watts per channel |
|
Horizontal Dispersion |
30° |
|
Vertical Dispersion |
44″ (112cm) line source |
|
Sensitivity |
90 dB/2.83 volts/meter |
|
Impedance |
4 Ohms, 0.8 at 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers. |
|
Crossover Frequency |
380Hz |
|
High Frequency Transducer |
XStat™ CLS™ electrostatic transducer » Panel Dimensions: 44″ x 9.2″ (112 x 23cm) » Radiating Area: 405 in² (2,576 cm² ) |
|
Low Frequency Transducer |
Two 8” (20.3 cm) cast basket, high excursion, rigid aluminium cone woofers with extended throw drive assembly, non-resonance asymmetrical chamber format |
|
Components |
Custom-wound audio transformer, air core coils, low DCR steel laminate coils, polyester capacitors |
|
Signal Inputs |
Custom 5-way bi-wire tool-less binding posts |
|
Power Draw |
Max: 2W per channel Standby: <1W per channel |
|
Weight |
78 lbs. (35.4 kg) |
|
Dimensions |
59.8″ x 10.4″ x 25.4 ” (152cm x 26.4cm x 64.6cm) |
