The Focus ESL C18 pairs well with all Martin Logan electrostatic speakers.  This centre channel speaker can be shelf or wall mounted making it a verstile option for any hone theatre system.  

• Frequency Response 50–23,000 Hz ±3dB
• Recommended Amplifier Power 20—300 watts per channel
• Horizontal Dispersion 30°
• Sensitivity 90 dB/2.83 volts/meter
• Impedance 4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.
• Crossover Frequency 470, 3000 Hz
• High Frequency Transducer 1" x 1.4" (2.6cm x 3.6cm) Folded Motion Transducer with 5.25" x 1.75" (13.3cm x 4.4cm) diaphragm.
• Mid Frequency Transducer Patented CLS™ XStat™ electrostatic transducer » Panel Dimensions: 7.5" x 18" (19 x 45.7cm) » Radiating Area: 135 in² (868 cm²)
• Low Frequency Transducer Two 6.5" (16.5cm) cast basket, high excursion, rigid aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format.

Dimensions: 

• Table Mounted 9.6" H x 43.2" W x 9.2" D
• Wall Mounted 9.4" H x 43.2" W x 9.6" D
• Wall Mounted (angled) 11.3" H x 43.2" W x 11.5" D