michael chuaApril 29, 2018Car Subwoofers12", Car Subwoofers, L1200B, Sony Sony XS-L1200B Thiele & Small Parameters Thiele & Small Parameters (before Break-in) Sealed Box=55 liters • F3=42Hz (Manufacturer’s T/S) Sealed Box=75 liters • F3=42Hz (Manufacturer’s T/S) BandPass Box=50 liters • Fb=54Hz (Manufacturer’s T/S) Updated on Oct 26, 2023