MartinLogan FOCUS ESL C18 Brochure

THE FOCUS ESL C18 IS A MASTERPIECE OF CENTER CHANNEL
DESIGN AND ENGINEERING, boasting a depth of just 9.6-inches when

mounted flat on a wall. Situated just behind the perforated front grill,
fixed in a uniquely designed housing, sits a 7.5 x 18-inch electrostatic
panel and Folded Motion tweeter. The combined performance
characteristics of the electrostatic panel and the Folded Motion
Tweeter ensure precision and hyper-realistic front-stage blending. This
kind of mid- and high-frequency performance can only be supported
by a foundation of tremendous low-end, so the Focus ESL C18 also
features a passive array of twin 6.5-inch aluminum cone woofers,
capable of deep bass reproduction down to 50Hz. The Focus ESL C18
is also at home on a shelf or floor stand—just toggle the “On-Wall/Off­Wall” acoustic contour switch to instantly optimize performance for any
mounting position.

QUICK SPECS:

• CLS™ XStat™ electrostatic transducer

• Folded Motion XT tweeters

• Two 6.5-inch cast basket, high excursion,
rigid aluminum cones

•

50–23,000 Hz ± 3db frequency response

• WBT binding posts

• Wall or table mount

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
transducer with total playable area 135 in

2

(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,
nonferromagnetic, 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 x 43.2 x 9.2-inch (24.4 x 109.7 x 23.4 cm)

Size (H x W x D, Installed On Wall, Flat Mount)

9.4 x 43.2 x 9.6-inch (23.9 x 109.7 x 24.5 cm)

Size (H x W x D, Installed On Wall, Angled Up)

11 x 43.2 x 11.2-inch (27.9 x 109.7 x 28.3 cm)

Size (H x W x D, Installed On Wall, Angled Down)

11.3 x 43.2 x 11.5-inch (28.8 x 109.7 x 29.1 cm)

Finish Options:

WalnutGloss Black Cherry

Premium Finish Options:

Arctic Silver Cordoba RedDesert Silver Deep Sea BlueMeteor Grey Basalt BlackRosso Fuoco

Specifications are subject to change without notice.