michael chuaJanuary 17, 2019HIFI DRIVERS4", M11MG, Midrange, Vifa Vifa M11MG-09-08 Thiele / Small Parameters Sealed Box 1.7 liters. F3=116Hz, Q=1.16 Sealed Box 5 liters. F3=100Hz, Q=0.90 Sealed Box 10 liters. F3=98Hz, Q=0.83