thiele/small parameters
Nominal Impedance (Z) 4 ohms
DC Resistance (Re) ]] 3.6 ohms
Resonance Frequency (Fs) 37.3460 Hz
Piston Area (Sd) 0.0491 m2
Force Factor (BL) 11.0117 T.m
Mechanical Q Factor (Qms) 7.6824
Electrical Q Factor (Qes) 0.7362
Total Q Factor (Qts) 0.6718
Sensitivity 1W/M (SPL) 84.6196
Mechanical Comp (Cms) 0.0764 mm/N
Moving Mass (Mms) 237.7651 g
Linear Excursion (Xmax) . 14 mm
Volume Acoustic Comp (Vas) 25.7006 Ltr/ 0.9076 cu ft
Reference Efficiency (NO.) 0.1011% RMS
Power (Pe) 500 Watts
Frequency Response 20-200 Hz
Voice Coil Diameter 2.5 in/63.5 mm
Displacement 0.0885 cu ft/ 2.506 Lt
in the box:
SPK-12S4, Manual, Warranty