The MartinLogan Expression 13A have a 13" (CLS™) XStat™ electrostatic transducer and dual 10" PoweredForce woofers powered by dual 300-watt Class-D amplifiers. These speakers have a big detailed sound stage.  Have a large room? No problem these can handle it. 

• Frequency Response 24–23,000 Hz ±3dB
• Recommended Amplifier Power 20—600 watts per channel
• Horizontal Dispersion 30°
• Vertical Dispersion44" (112cm) line source
• Sensitivity 91 dB/2.83 volts/meter
• Impedance 4 Ohms, 0.7 at 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.
• Crossover Frequency 300Hz
• High Frequency Transducer XStat™ CLS™ electrostatic transducer » Panel Dimensions: 44" x 13" (112 x 33cm) » Radiating Area: 572 in² (3,696 cm²)
• Low Frequency Transducer Two 10” (25.4 cm) cast basket, high excursion, rigid aluminium cone and extended throw drive assembly, non-resonance asymmetrical chamber format.
• Amplifier Woofer: 2 x 300 watts/channel (4 ohms), 2 x 600 watts peak
• Room Correction (Bass Section) Anthem Room Correction (ARC™) ready (Sold Separately)

Dimensions: 61.5" H x 13.4" W x 27.5 " D

Weight: 102 lbs each 

These speakers are a non stocked item please expect approximately 2 weeks delivery time. Available to order in-store only.

Warranty: 5 years parts and labour