Dayton Audio DS315-8 12" Designer Series Woofer Speaker Cosmetic frame with low profile lip, designed for front mounting-no countersinking required! Coated paper cone, half roll rubber surround for durability and accurate reproduction Optimized to yield a low 3 dB down point and high potential output in a reasonably sized cabinet Smooth frequency response and linear roll-off simplify filter design, guaranteeing good results with off-the-shelf crossovers Vented pole piece for minimized power compression and maximized reliability