Your #1 Source for Audio, Video and Speaker Building Components. Dayton Audio UM12-22 12 Ultimax DVC Subwoofer 2 ohms Per Co. If you want outrageous amounts of bass, you gotta move some air. The Ultimax Series of dual voice coil subwoofers, from Dayton Audio, are not for the faint of heart. Built using the latest […]... Read More