The performance of the original groundbreaking Reference Series from Dayton Audio, now available with a paper cone! The Reference Series Paper drivers use a proprietary paper cone formulation combining natural paper pulp and synthetic Kevlar® and glass fibers to create an advanced non-woven fiber composite that delivers the perfect combination of excellent detail and smooth, natural sonic character, plus a distinctive, classy look. Three-part paper composite diaphragm featuring paper, Kevlar, and glass fibers. Similar cosmetics and design features as original Reference Series with low-distortion motor, 6-hole cast frame, rubber surround, and solid aluminum phase plug. Perfect as woofers, midwoofers, or dedicated midrange drivers. 4 mm of Xmax and 89 dB sensitivity.