MartinLogan Focus ESL C18

Focus ESL C18 by MartinLogan

Overview:
The Focus ESL C18 by MartinLogan is a high-performance center channel speaker designed to deliver precise, room-filling sound for your home theater. With the ability to be placed on a shelf or mounted on the wall, this speaker offers flexible placement options, while the convenient “On-Wall/Off-Wall” acoustic contour switch optimizes performance based on its mounting position. The result is lifelike, full-range sound that perfectly complements your home theater system, ensuring a truly immersive experience.

Purpose:
The Focus ESL C18 is crafted for users who demand precise, high-fidelity center channel reproduction. Featuring a combination of electrostatic panel technology and Folded Motion Tweeter, it delivers a clear and dynamic sound that elevates the clarity of dialogue and front-stage blending in movies and music.

Design:
Equipped with a MartinLogan exclusive Folded Motion Tweeter, the Focus ESL C18 uses a low-mass diaphragm that minimizes distortion and enables rapid high-frequency response. The electrostatic panel provides pristine midrange performance, ensuring an accurate, dynamic soundstage. The On-Wall/Off-Wall acoustic contour switch lets users fine-tune the speaker’s response to match its placement, optimizing bass output whether the speaker is placed near a wall or further away.

The Focus ESL C18 features 5-Way WBT Binding Posts, which provide a secure, high-conductivity connection for professional-grade audio systems. These audiophile-grade posts are insulated for shock protection and damped against vibrations to maintain superior sound quality.

Key Features:
• Folded Motion Tweeter: 1" x 1.4" (2.6 cm x 3.6 cm) with a 5.25" x 1.75" diaphragm area, delivering lightning-fast high-frequency response and minimized distortion.
• Electrostatic Panel: 7.5" x 18" (19 x 45.7 cm) Patented CLS™ XStat™ electrostatic transducer ensures clear midrange and realistic front-stage blending.
• Low-Frequency Transducer: Dual 6.5" (16.5 cm) high excursion, rigid aluminum cones for deep bass, featuring a non-resonant asymmetrical chamber format for precise low-end performance.
• On-Wall/Off-Wall Switch: Allows you to adjust the speaker’s performance for ideal sound depending on wall proximity.
• Audiophile WBT-0703Cu Binding Posts: Gold-plated, non-ferromagnetic, pure copper connectors for high conductivity, free from eddy current effects.

Performance:
• Frequency Response: 50 Hz – 23,000 Hz ±3dB, delivering a full-range sound profile with excellent bass extension and high-frequency clarity.
• Sensitivity: 90 dB (2.83V/1m), ensuring efficient power handling and clear sound even at lower volume levels.
• Impedance: 4Ω, compatible with amplifiers rated for 4, 6, or 8Ω impedance.
• Recommended Amplifier Power: 50 – 400 watts per channel, offering flexibility for a wide range of amplifiers.
• Crossover Frequency: 470 Hz and 3,000 Hz, for a smooth transition between drivers and coherent sound reproduction.

Dimensions and Installation:
• Table Mount Dimensions: 9.6" x 43.2" x 9.2" (24.4 cm x 109.7 cm x 23.4 cm), offering a sleek profile for easy placement on stands or shelves.
• Installed On Wall (Flat Mount): 9.4" x 43.2" x 9.6" (23.9 cm x 109.7 cm x 24.5 cm), allowing for a flush, clean integration into your home theater setup.
• Installed On Wall (Angled): 11.3" x 43.2" x 11.5" (28.8 cm x 109.7 cm x 29.1 cm), perfect for customized sound projection when wall-mounted at an angle.
• Weight: 50 lbs (22.7 kg), ensuring robust construction that enhances both the speaker's performance and durability.

Components and Audio Controls:
• Components: Custom-wound audio transformer, air core coils, low DCR steel laminate coils, and polyester capacitors contribute to the speaker’s high-quality, distortion-free sound.
• Audio Controls: On-Wall / Off-Wall switch for tailoring the speaker’s performance to its environment.