ESL 2905 Classique Finish

Sales price: € 8500,00


The ESL-2905 is the largest of our full-range ESL models. It employs six electrostatic panels, the inner two utilising the concentric rings of anodes used to create the point source image. Whilst all electrodes receive the same music signal, each electrode area reacts slightly differently, such that treble frequencies appear to come from the centre of the speaker. This often leads to the belief that a crossover separates the signals, but this is not the case. The outer panels (three above and three below), are linear panels, the entire surface of each reacting in unison to the signal. The large overall surface area is necessary to provide deep bass extension and dynamic response. Construction is a combination of tensioned aluminium extrusions coupled to stainless steel support structures, with a piano gloss wooden trim. The substantial base construction is finished with piano gloss side cheeks and high-quality terminations. Internally, the highest quality components are used, including rare core transformers and high-grade audiophile capacitors. Three types of protection system are used to ensure the speakers are difficult to damage when over driven. A rigid three-dimensional structural support system, combined with an overall speaker mass of 41.6kg ensures the maximum transmission of sound energy resulting in the most dynamic and powerful Quad ESL ever produced.



Format: Floor standing dipole with 3° fixed tilt black
Type Multiple Electrostatic Drive Membranes
Membrane Ultra Low Mass (0.5gm) Tensioned Film
No. of Panel Elements 6
Time Delay Progressive Concentric Rings
Chassis Structure Heavy Duty Composite Aluminium / Steel
Maximum Output 2 N/㎡ at 2m on axis
Sensitivity 1.5 mbar per volt referred to 1m
(86dB/2.83V RMS equivalent)
Impedance 8 Ohms nominal
Impedance Variation 4 - 20 Ohms
Maximum Input Continuous input voltage (RMS): 10V
Programme Peak for undistorted output: 40V
Permitted peak input: 55V
Frequency Reponse 32Hz - 21kHz (-6dB)
    28Hz - 21kHz (useable)
Directivity Index See Polar Diagrams
Distortion (100dB @ 1M) Above 1000Hz 0.15%
Above 100Hz 0.5%
Above 50Hz 1.0%
Directivity Index See Polar Diagrams
AC Input 220 - 240V or 110-120V
Power Fuse 63 mA anti-surge, 200-240V
100 mA anti-surge, 100-120V
Power Consumption 6W
Dimension (H × W × D) 1430 × 695 × 385 (mm)
(add 25-55mm for feet)
Net Weight 41.6kg each