Dayton Audio DS115-8 4" Designer Series Woofer Speaker Coated paper cone, half roll rubber surround for durability and accurate reproduction Cosmetic frame with low profile lip, designed for front mounting-no countersinking required! Optimized to yield a low 3 dB down point and high potential output in a reasonably sized cabinet Vented pole piece for minimized power compression and maximized reliability Generous Xmax capability encourages use of moderate bass boost to tailor the response