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Martin Logan



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Specifications are subject to change without notice

Frequency Response

23–22,000 Hz ±3dB

Recommended Amplifier Power

20—1300 watts per channel

Horizontal Dispersion


Vertical Dispersion

48" (122 cm) line source


90 dB/2.83 volts/meter


Nominal: 4 ohms, 0.43 ohms @ 20 kHz. Compatible with 4, 6, or 8 Ohm rated amplifiers.

Crossover Frequency

60, 250–400 Hz

High Frequency Transducer

XStat™ CLS™ electrostatic transducer » Panel Dimensions 48" x 22" (122 x 56cm)
» Radiating Area 1056 in² (6,832 cm² )

Low Frequency Transducer

Rear: 15” (38.1cm) cast basket, high excursion, rigid aluminum cone with extended throw drive assembly. Extensively vented triple shorting ring motor and 4-layer coil to eliminate compression and distortion.Front: 12” (30.5cm) round cast aluminum alloy frame, high excursion, rigid carbon fiber sandwich cone with long throw design, 3-inch (7.5cm) diameter copper-clad aluminum flat wire voice coil, and vented pole piece and under-spider opening to reduce power compression.


Phenolic Resin Polymer: Dense substrate with superb mechanical strength to minimize cabinet vibrations caused by woofer cone motion counter forces to provide an ideal baffle for the electrostatic panel and woofers.


High-Pass Crossover: 1% resistors mounted to heat sinks, polypropylene capacitors, air core inductors, dual toroidal audio transformers to drive electrostatic element Low-Pass Crossover: 1% resistors mounted to heat sinks, toroidal inductors, supports user options to modify sound output via jumpers.

Audio Controls

Bass Control: 0dB, -4dB, -8dB Distance Control: 3 meters (or less), 4 meters, 5 meters (or greater)


WBT-0705Ag nextgen™ 5-way bi-wire binding posts feature a filigree signal conductor made from fine silver for high conductivity. Fully insulated for CE and IEC conformity providing shock hazard protection. Free from eddy current effects. Max constant current 30 A, admissible peak current 200 A. Outer metal cap with palladium plated finish.

Power Draw

Standby: 1W each Max: 15W each


LED intensity control: On, Dim, Off


385 lbs. (175 kg)


74.8" x 30.3" x 34.2 " (189.9cm x 76.9cm x 87cm)

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