Specification:

Free Air Resonance (Fs):
46.0 Hz
Electrical ”Q“ (Qes): 0.860
Mechanical ”Q“ (Qms): 10.690
Total Speaker ”Q“ (Qts): 0.796
Equivalent Compliance (Vas): 0.91 cu. ft. / 25.75 liters
One-way, Linear Excursion (Xmax)*: 0.52 in. / 13.2 mm
Reference Efficiency (no): 0.28%
Efficiency (1W/1m)**: 86.7 dB SPL
Effective Piston Area (Sd): 50.11 sq. in. / 0.0323 sq. m.
DC Resistance (Re)***: 4.17 ohm
Nominal Impedance (Znom): 4 ohm
Continuous Power Handling (Pt): 250 Watts
Displacement: 0.064 cu. ft. / 1.81 litres
Net Weight: 11.4 lbs. / 5.17 Kg
Minimum Sealed Enclosure Volume: 1.25 cu. ft. / 35.4 litres
Optimum Sealed Enclosure Volume: 2.0 cu. ft. / 56.6 litres or larger
Infinite Baffle Use: Yes