AXIS 15” Low Frequency Driver Thiele Small & Driver Parameters Parameter 15" Axis Description Qts 0.39 Total Q Qes 0.42 Electrical Q Qms 6.7 Mechanical Q Fs 23 Hertz, Free Air Resonance Res 4.83 Ohms, DC resistance Ls 9 H, series inductance Lp 15.3 H, lossy series inductance Rp 19.4 Ohms, loss across Lp Dia 330 m meters, effective Vas 128 liters, air volume equivalent mms 385 grams, effective mass cms 124 um/N, compliance bl 24.3 T*m, motor strength SplSens 87.