ESL 2812X

Electrostatic Loudspeaker

The ESL X concept began in 2019 as part of an intensive review of the QUAD Electrostatic manufacturing facility—a suite dedicated solely to the production of QUAD ESL loudspeakers.

In a unique four-panel design but sharing the same treble and midrange panels as the flagship ESL 2912X, the more compact 2812X model delivers the signature QUAD sound—ultra‑transparent, highly detailed and effortlessly natural, with a midrange so lifelike that vocals and acoustic instruments appear in the room. Yet, all of this is provided in a smaller, lighter and less imposing format — at just 1070 mm high.

• Format: Floor standing dipole with 3° fixed tilt
• Type: Multiple electrostatic drive membranes
• Point Source Time Delay: Progressive concentric rings
• Chassis Structure: Heavy duty composite aluminium / steel
• Panel Elements: 4
• Maximum Output: 2 N/m² at 2 m on axis
• Sensitivity (86 dB / 2.83 V RMS equivalent): 1.5 mbar per volt referred to 1 m
• Nominal Impedance: 8 Ω
• Impedance Variation: 4 – 15 Ω
• Maximum Input: Continuous input voltage (RMS): 10 V Programme Peak for undistorted output: 40 V; Permitted peak input: 55 V
• Frequency Response: 37 Hz – 21 kHz (-6 dB); 33 Hz – 23 kHz (useable)
• Distortion (100 dB @ 1 m): Above 1000 Hz < 0.15%; Above 100 Hz < 0.5%; Above 50 Hz < 1.0%
• AC Input: 220-240 V, 100-120 V
• Power Fuse: 100 mA anti-surge, 200-240 V; 200 mA anti-surge, 100-120 V
• Power Consumption: 8 W