MartinLogan Focus ESL C18
Description of the product.
| Brand | MartinLogan |
| Model | Focus ESL C18 |
| Drivers | |
| Woofer | Two 6.5" (16.5cm) cast basket, high excursion, rigid aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format. |
| Woofer diameter (mm) | 165 |
| Midrange | Patented CLS™ XStat™ electrostatic transducer » Panel Dimensions: 7.5" x 18" (19 x 45.7cm) » Radiating Area: 135 in² (868 cm²) |
| Midrange diameter (mm) | 190 |
| Tweeter | 1" x 1.4" (2.6cm x 3.6cm) Folded Motion Transducer with 5.25" x 1.75" (13.3cm x 4.4cm) diaphragm. |
| Tweeter diameter (mm) | 26 |
| Frequency response | 50 Hz – 23000 Hz +3 −3 dB |
| Enclosure | |
| Sensitivity (dB) | 90 |
| Impedance (Ω) | 4 |
| Recommended amplifier power, least (W) | 50 |
| Recommended amplifier power, most (W) | 400 |
| Built-in amplifier power (W) | |
| Height (mm) | 1097 |
| Width (mm) | 244 |
| Depth (mm) | 234 |
| Weight (kg) | 22.7 |