Summit X


Launched in 2009

Price when discontinued: Customizable, starting at
$14,995 per pair

Natural Cherry / Black Aluminum

Summit X

Unparalleled Sound Inspired By the CLX

Amazing mid-range clarity and openness inspired by the CLX loudspeaker is only half of the story. Summit X is the first hybrid electrostatic speaker to bring controlled dispersion to low frequencies. Using a precision Vojtko Voiced™ crossover network to apply variable phasing near the crossover point, Summit X's Controlled Dispersion PoweredForce™ technology provides seamless blending with the XStat™ transducer. Four innovative modular feet adjust vertical dispersion over a 12 degree range, while the 25 and 50Hz level controls fine-tune woofer output to provide smooth, clean, and powerful bass throughout the listening environment.

Choose a Finish

Natural Cherry / Black Aluminum Dark Cherry / Black Aluminum Black Ash / Black Aluminum Maple / Black Aluminum Birds Eye Maple / Black Aluminum Bubinga / Black Aluminum

Frequency Response

24–23,000 Hz ±3dB

Horizontal Dispersion


Vertical Dispersion

44" (112cm) line source

High Frequency Transducer

XStat™ CLS™ electrostatic transducer

» Panel Dimensions

44" × 11.3" (112 × 29cm)

» Radiating Area

497 in2 (3,248 cm2)

Low Frequency Transducer

Two 10" (25.4cm) cast basket, high excursion, aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format


Woofer: 2 × 200 watts/channel (4 ohms)


91 dB/2.83 volts/meter


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

Recommended Amplifier Power

20‒600 watts per channel

Crossover Frequency



Custom-wound audio transformer, air core coils, polypropylene capacitors

Audio Controls

±10dB at 25Hz
±10dB at 50Hz


Control knob to adjust illuminated blue hood logo, back control panel lighting & ground effects lighting


Custom 5-way binding posts

Power Draw

Standby: <1W/channel
Max: 350W/channel


75 lbs. (34 kg)


60.9" × 12.7" × 21.3"
(154.8cm × 32.2cm × 54cm)

Specifications are subject to change without notice.

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