michael chuaMay 5, 2018PRO DRIVERS1132, 12", BBC, MTG, Woofer BBC MTG 1132 Thiele / Small Parameters Ported Box 75 liters. F3=77Hz Sealed Box 75 liters. F3=95Hz, Q=0.89 Sealed Box 100 liters. F3=95Hz, Q=0.85