Brand-X XXLADC12 12'' High Power Dual Voice Coil Subwoofer 12&#34; Super Stiff Treated Pulp Ultra&#45;Lite Cone. Oversize High Density Foam Surround. Dual 2&#45;1&#47;2&#34; High Temperature Baeisv Voice Coil. Double Stacked 160 Oz Magnet Structure. Bumped Back Plate And Vented Pole Piece.