Martin Logan Spire (Incredible Speakers - Come hear them at the warehouse listening room)

Frequency Response

29–23,000 Hz ±3dB

Recommended Amplifier Power

20‒500 watts per channel

Horizontal Dispersion

30°

Vertical Dispersion

44" (112cm) line source

Sensitivity

91 dB/2.83 volts/meter

Impedance

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

Crossover Frequency

320Hz

High Frequency Transducer

XStat™ CLS™ electrostatic transducer

» Panel Dimensions: 44" × 11.3" (112 × 29cm)
» Radiating Area: 497 in2 (3,248 cm2)

Low Frequency Transducer

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

Amplifier

Woofer: 200 watts/channel (4 ohms)

Components

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

Audio Controls

±10dB at 35 Hz

Inputs

Custom 5-way bi-wire binding posts

Lighting

Light intensity dimmer control

Weight

58 lbs. (26.3 kg)

Dimensions

59" × 12.5" × 17.75"
(150cm × 32cm × 45.1cm)