MB Quart Premium PWH302 12-Inch DVC 2-Ohm Subwoofer 12 DVC 500 Watts, 1000 Maxx Watt Power, 2-Ohm Subwoofer Wrap around motor die-cast aluminum basket with diamond-cut machined sides; dual 4- and 2-Ohm 3 voice coil with glass fiber former and aluminum reinforced neck; double-stacked 120 oz. high-intensity ferrite magnet Finite element analysis linear flux saturated magnetic plates with chrome finish; injection polypropylene-fill honeycomb reinforced cone structured body with titanium wet-powder coating 1 tall rubber surround for more cone area and maximum compression; single-flat conex spider with woven tinsel leads; custom-tooled parallel input nickel-plated push-type terminals All connections are mounted on one end of the woofer and simple jumpers allow for series and parallel wiring without complication