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16
FOCUS ESL C18 SPECIFICATIONS*
English
System Frequency Response:
50–23,000 Hz ± 3db
Recommended Amplifier Power:
50–400 watts
Dispersion:
Horizontal: 30 Degrees
Sensitivity:
90 dB/2.83 volts/meter
Impedance:
Nominal: 4 ohms
Crossover Frequency:
470, 3,000 Hz
High Frequency Driver:
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 Driver:
18” x 7.5” (45.7cm x 19.1cm) CLS™ XStat™ electrostatic trans-
ducer with total playable area 135 in² (873cm²)
Woofers:
Two 6.5” (16.5cm) cast basket, high excursion, rigid aluminum
cone with extended throw drive assembly, non-resonance
asymmetrical chamber format.
Components:
Custom-wound audio transformer, air core coils, low dcr steel
laminate coils, polyester capacitors
Controls:
Position: On-Wall / Off-Wall
Signal Inputs:
WBT-0703Cu nextgen™ 5-way binding posts feature a filigree
signal conductor made from gold plated, nickel free, non-
ferromagnetic, pure copper for high conductivity and fully
insulated. Free from eddy current effects.
Weight:
50 lbs. each (22.7 kg)
Size (H x W x D, Table Mount):
9.6” × 43.2” × 9.2” (24.4 × 109.7 × 23.4 cm)
Size (H x W x D, Installed On Wall, Flat Mount):
9.4” × 43.2” × 9.6” (23.9 × 109.7 × 24.5 cm)
Size (H x W x D, Installed On Wall, Angled Up):
11” × 43.2” × 11.2” (27.9 × 109.7 × 28.3 cm)
Size (H x W x D, Installed On Wall, Angled Down):
11.3” × 43.2” × 11.5” (28.8 × 109.7 × 29.1 cm)
*Specifications are subject to change without notice.
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