MartinLogan unveils the Classic ESL 9, its newest modern Masterpiece. All the familiar elements of MartinLogan’s flagship ESL series are here, 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.
Martin Logan Classic ESL 9 - Pair
34–23,000 Hz ±3dB
44" (112cm) line source
High Frequency Transducer
XStat™ CLS™ electrostatic transducer
» Panel Dimensions
44" × 9.2" (112 × 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
90 dB/2.83 volts/meter
4 Ohms, 0.8 at 20kHz. Compatible with 4, 6, or 8 Ohm rated amplifiers.
Recommended Amplifier Power
20‒400 watts per channel
Custom-wound audio transformer, air core coils, low DCR steel laminate coils, polyester capacitors
Custom 5-way bi-wire tool-less binding posts
Max: 2W per channel Standby: <1W per channel
78 lbs. (35.4 kg)
59.8" × 10.4" × 25.4"
(152cm × 36.4cm × 64.6cm)
Gloss Black, Walnut and Dark Cherry.