michael chuaApril 26, 2018Drivers Thiele & Small, HIFI DRIVERS10", M25WO, Vifa, Vintage, Woofer Vifa M25WO-49-08 Thiele & Small Parameters Thiele & Small Parameters (before Break-in) Ported Box=35 liters • F3=40Hz (Manufacturer’s T/S) Ported Box=35 liters • F3=40Hz (DATS T/S) Ported Box=55 liters • F3=35Hz (Manufacturer’s T/S) Ported Box=55 liters • F3=35Hz (DATS T/S) Ported Box=75 liters • F3=35Hz (Manufacturer’s T/S) Ported Box=75 liters • F3=35Hz (DATS T/S) Updated on Nov 2, 2023