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The MartinLogan Expression ESL 13A is a premium hybrid electrostatic floorstanding loudspeaker from the Masterpiece Series. It combines a curved 13-inch CLS XStat electrostatic panel, using MicroPerf stator technology and AirFrame construction, with two forward-firing 10-inch PoweredForce Forward aluminum-cone woofers. The woofers are independently powered by built-in Class-D amplifiers and managed by a 24-bit Vojtko DSP engine. Adjustable bass and mid-bass controls, together with compatibility with Anthem Room Correction, allow the low-frequency section to be optimized for room acoustics. The panel is passive and requires an external amplifier; the woofer amplifiers require AC power. The very low high-frequency impedance makes amplifier compatibility and current delivery important despite the speaker’s relatively high sensitivity.
Driver and acoustic performance characteristics
Amplification power output and characteristics
Driver configuration and enclosure design
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
Components that show up alongside the Expression ESL 13A in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Impression ESL 11A's power @ 4ω is 550W against the Expression ESL 13A's 600W. Both share sensitivity (91 dB), impedance (4Ω), and high-frequency extension (23 kHz).
Both turn up in the same documented systems.
The Whisper DSW Clarity Edition's sensitivity is 94.5 dB against the Expression ESL 13A's 91 dB and its low-frequency extension 22 Hz against 24 Hz. Both share impedance (4Ω) and power @ 4ω (600W).
The Summit X matches the Expression ESL 13A on sensitivity (91 dB), impedance (4Ω), low-frequency extension (24 Hz), and high-frequency extension (23 kHz).
The Valentina A8's impedance is 6Ω against the Expression ESL 13A's 4Ω, its sensitivity 87 dB against 91 dB, its low-frequency extension 30 Hz against 24 Hz, and its high-frequency extension 20 kHz against 23 kHz.
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