Designed to accommodate the most serious audiophile, these drivers use one of the most rigid and lightweight cone composites available today, woven carbon fiber. The use of this material results in dynamic bass response, superb midrange clarity and an extremely natural top end roll off. Venting of the pole piece increases the thermal boundaries and improves transient response. Other features include: Rounded over steel baskets for a cosmetically attractive look when front loaded and a high compliance rubber surround to increase durability