Version 4 Ohm / 8 Ohm
Free Air Resonance (Fs): 25.24 Hz 26.52 Hz
Electrical Q (Qes): 0.432 0.472
Mechanical Q (Qms): 6.336 6.115
Total Speaker Q (Qts): 0.405 0.438
Equivalent Compliance (Vas): 1.783 cu. ft. / 50.46 liters 1.735 cu. ft. / 49.10 liters
One-Way, Linear Excursion (Xmax)*: 0.375 in. / 9.5 mm 0.375 in. / 9.5 mm
Reference Efficiency (no): 0.180% 0.186%
Efficiency (1W/1m)**: 84.53 dB SPL 84.67 dB SPL
Effective Piston Area (Sd): 53.522 sq. in. / 0.0345 sq. m. 53.522 sq. in. / 0.0345 sq. m.
DC Resistance (Re): 4.086 ohm 6.671 ohm
Nominal Impedance (Znom): 4 ohm 8 ohm
Thermal Power Handling (Pt): 300W 300W
Driver Displacement: 0.025 cu. ft. / 0.71 liters 0.025 cu. ft. / 0.71 liters

Single 4 or 8 Ohm
Power Handling: 150W RMS
Xmax 0.375"
Sealed: .625 cubic feet
Ported: 1.0 cubic feet
Mounting Depth 4.34"
Weight 7.8 Lbs