AXIS 12” Low Frequency Driver Thiele Small & Driver Parameters Parameter 12" Axis Description Qts 0.35 Total Q Qes 0.38 Electrical Q Qms 6.3 Mechanical Q Fs 28 Hertz, Free Air Resonance Res 4.74 Ohms, DC resistance Ls 8.7 H, series inductance Lp 14.8 H, lossy series inductance Rp 18.9 Ohms, loss across Lp Dia 250 m meters, effective Vas 40 liters, air volume equivalent mms 280 grams, effective mass cms 118 um/N, compliance bl 24.8 T*m, motor strength SplSens 85.