12W0V3-4 - JL Audio 12" Single 4-Ohm W0V3 Series Subwoofer 12W0V3-4 - JL Audio 12" Single 4-Ohm W0V3 Series Subwoofer Mineral-filled, polypropylene cone woofer for excellent durability Large roll surround for generous amounts of excursion Elevated frame cooling brings air directly to the voice coil Designed for compact sealed enclosures or medium-sized ported enclosures