how much space does a subwoofer need
Apocalypse. The Apocalypse line consists of a single subwoofer: Model AP12D. AP12D is a 12-inch speaker and requires 1.5 cubic feet of air space for sealed enclosures and 2.0 cubic feet for ported enclosures.The RX line is Planet Audio's most extensive offering including 8, 10, 12 and 15-inch subwoofers.xample: 4,032 / 1,728 = 2.33 cubic feet. The air space/volume of this enclosure is 2.33 cubic feet. Planet Audio's Big Bang line of subwoofer consists of two 12-inch (models BB12D and BB212D) and two 15-inch subwoofers (BB15D and BB215D).