michael chuaApril 30, 2018Car Subwoofers12", Car Subwoofers, Pioneer, W31C Pioneer TS-W31C Thiele & Small Parameters Recommended for In-Car Use Compact Sealed Box 25 liters. F3=50Hz, Q=1.32 Recommended for In-Car Use Ported Box 100 liters. F3=30Hz Ported Box 100 liters. F3=33Hz Ported Box 150 liters. F3=27Hz Sealed Box 55 liters. F3=40Hz, Q=0.96 Sealed Box 100 liters. F3=38Hz, Q=0.78 Sealed Box 150 liters. F3=38Hz, Q=0.69 Bandpass Box 90 liters. F3=30Hz-90Hz
