DB Drive APW10D4 10" Shallow SubDB Drive APW10D4 APW10D4 : 10" Shallow Mount Marine Subwoofer Upgrade your motorcycles audio with the DB Powersports APW10D4, a 10 shallow mount subwoofer built for performance and durability. Designed for compact spaces, its UV coated IMPP cone and butyl rubber surround withstand the elements while delivering deep, powerful bass. With a high temperature dual 4 voice coil and 40 oz. ferrite magnet, it ensures clear, resonant sound on every ride. The