S P E C I F I C AT I O N S Directed Part Number Model Number 27050 27055 C2 102 C2 104 Fs (free-air resonance) 31.82 29.76 Vas (equivalent compliance, cu. ft.) 1.32 1.63 Vas (equivalent compliance, liters) 37.37 46.26 Qms (Q, mechanical) 6.02 5.89 Qes (Q, electrical) 0.53 0.57 Qts (total driver Q) 0.49 0.52 3.8 6.4 4 8 Re (DC resistance, ohms) Z (nominal impedance, ohms) Le (inductance, mh) Efficiency (2.83v/1M, dB) Xmax (one-way linear excursion, in.