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.