FOUR Audio 4-AI12 SLOT

Ported enclosure for 12″ subwoofer Net volume: 80 liters Port area: 200 cm2 Port height: 40 cm Port width: 5 cm Port length: 40 cm Tuning frequency: 38 Hz Measurements ( W x H x D ): 800 x 405 x 440 mm Diameter of speaker hole: 285 mm.