Designed for high-end systems, this driver utilizes a very stiff and lightweight woven carbon fiber cone. The use of this material results in a dynamic bass response, superb midrange clarity and an extremely natural top end roll off. Unobstructed venting of the Zamak die cast chassis, plus the use of a vented pole piece contributes to the dramatic transient response. Other features include a high compliance rubber suspension, soft polymer dust cap, edge-wound copper voice coil on a fiberglass reinforced Kapton former, and gold plated terminals. The HM170CO provides a very natural midrange quality and excellent off-axis performance. Made in France.