thiele/small parameters
Nominal Impedance (Z) 4 ohms
DC Resistance (Re) ]] 3.2 ohms
Resonance Frequency (Fs) 60.3665 Hz
Piston Area (Sd) 0.0194 m2
Force Factor (BL) 11.3310 T.m
Mechanical Q Factor (Qms) 5.4933
Electrical Q Factor (Qes) 0.8733
Total Q Factor (Qts) 0.7535
Sensitivity 1W/M (SPL) 81.9876
Mechanical Comp (Cms) 0.0752 mm/N
Moving Mass (Mms) 92.3784 g
Linear Excursion (Xmax) . 8.5 mm
Volume Acoustic Comp (Vas) 3.9378 Ltr/ 0.1390 Cu ft
Reference Efficiency (NO.) 0.0952%
RMS Power (Pe) 350 Watts
Frequency Response 30-500 Hz
Voice Coil Diameter 2.0 in/50.8 mm
Displacement 0.05 cu ft/ 1.44Ltr
in the box:
SPK-8S4, Manual, Warranty