MartinLogan Classic ESL 9

MartinLogan Classic ESL 9 by MartinLogan 

Overview 

The MartinLogan Classic ESL 9 is more than a speaker—it’s a masterpiece of audio engineering, designed to inspire, evoke, and transform. As a member of the acclaimed Masterpiece Series, the Classic ESL 9 brings the sophistication and innovation of MartinLogan’s flagship electrostatic technology to a sleek, modern design. Combining the precision of a 9.2-inch Curvilinear Line Source (CLS™) XStat™ electrostatic transducer with the deep, resonant bass of dual 8-inch aluminum cone woofers, this loudspeaker delivers a sonic experience that resonates long after the music stops.

Purpose

The Classic ESL 9 is the perfect choice for audiophiles and music lovers seeking uncompromising sound quality and refined aesthetics. Whether listening to music or enjoying a cinematic experience, this speaker offers a seamless blend of detail, dynamics, and low-frequency authority that elevates any room into a concert hall or theater.

Key Features

• Electrostatic Precision:

  • Features a 9.2-inch wide XStat™ CLS™ electrostatic transducer with 405 in² of radiating area for unparalleled mids and highs.

  • Advanced MicroPerf stator technology provides nearly double the exposed diaphragm area compared to traditional panels, enhancing clarity and efficiency.

• Powerful Low Frequencies:

  • Dual 8-inch, high-excursion aluminum woofers deliver deep, accurate bass with minimal distortion.

  • Asymmetrical, non-resonant chamber design ensures smooth, natural low-end performance.

• Innovative AirFrame™ Blade Construction:

  • Rigid, vibration-resistant AirFrame™ Blade ensures maximum panel stability while maintaining an elegant, modern aesthetic.

  • Sleek, arrow-shaped design harmonizes the panel and woofer cabinet into a unified visual statement.

• Custom Components:

  • Features custom-wound audio transformers, air-core coils, and low DCR steel laminate coils for precise signal reproduction.

  • Polyester capacitors ensure superior performance across the frequency range.

Performance

• Frequency Response: 34 Hz – 23 kHz ±3dB for detailed highs and impactful lows.

• Sensitivity: 90 dB/2.83 volts/meter for efficient operation with a wide range of amplifiers.

• Impedance: Nominal 4Ω, compatible with amplifiers rated for 4, 6, or 8Ω.

• Dispersion:

  • Horizontal: 30° for precise imaging.

  • Vertical: 44" line source for uniform sound across the listening area.

Specifications

• Crossover Frequency: 380 Hz, ensuring seamless integration between electrostatic and woofer performance.

• Power Efficiency: Low power consumption with a maximum draw of 2W per channel and <1W in standby mode.

• Signal Inputs: Tool-less 5-way bi-wire binding posts for secure and easy connectivity.

Dimensions and Weight

• Dimensions: 59.8" x 10.4" x 25.4" (152 cm x 26.4 cm x 64.6 cm).

• Weight: 78 lbs. (35.4 kg), ensuring stability and robust construction.