LMS-R 12” Low Frequency Driver Thiele Small & Driver Parameters Parameter 12" LMS-R Description Qts 0.43 Total Q Qes 0.46 Electrical Q Qms 6.7 Mechanical Q Fs 28 Hertz, Free Air Resonance Res 3.96 Ohms, DC resistance Ls 4.7 H, series inductance Lp 7.7 H, lossy series inductance Rp 5.1 Ohms, loss across Lp Dia 250 m meters, effective Vas 39 liters, air volume equivalent mms 280 grams, effective mass cms 115 um/N, compliance bl 20.5 T*m, motor strength SplSens 84.