Classic ESL 9 is your ticket to a life-changing experience with a masterpiece of audio performance. This completely passive design features a 9.2-inch (CLS™) XStat™ electrostatic transducer, dual 8-inch aluminum-Cone woofers, and custom 5-way bi-wire tool-less binding posts.

Frequency Response 34–23,000 Hz ±3dB

Horizontal Dispersion 30°

Vertical Dispersion 44" (112cm) line source

High Frequency Transducer XStat™ CLS™ electrostatic transducer

Panel Dimensions 44" x 9.2" (112 x 23cm)

Radiating Area 405 in² (2,576 cm² )

Low Frequency Transducer Two 8” (20.3 cm) cast basket, high excursion, rigid aluminium cone woofers with extended throw drive assembly, non-resonance asymmetrical chamber format

Sensitivity 90 dB/2.83 volts/meter

Impedance 4 Ohms, 0.8 at 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.

Recommended Amplifier Power 20—400 watts per channel

Crossover Frequency 380Hz

Components Custom-wound audio transformer, air core coils, low DCR steel laminate coils, polyester capacitors

Signal Inputs Custom 5-way bi-wire tool-less binding posts

Power Draw Max: 2W per channel Standby: <1W per channel

Weight 78 lbs. (35.4 kg)

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