Transducer Size (Millimeters)152.4
DC Resistance4.1
Resonant Frequency48.54
Half Space Sensitivity81.84
Rated Noise Power100
Test Spectrum Bandwidth40Hz-500Hz

Transducer Size (Millimeters)152.4
DC Resistance4.1 Ω±5.0%
Resonant Frequency48.54 Hz15%
Half Space Sensitivity @ 2.83V81.84 dB±1.01
Sensitivity @ 1W/1m80.7 dB±1.01
Rated Noise Power (IEC 268-5 18.1)100 W
Test Spectrum Bandwidth40Hz-500Hz 12 dB/Oc
Effective Piston Area128.7 cm2
Moving Mass46.8 g
Motor Force Factor8.82 T•m
Voice Coil Inner Diameter35.5 mm
Gap Height6 mm
Maximum Linear Excursion8.5 mm
Ferrofluid Type
Minimum Impedance6.21 Ω±7.5%
Voice Coil Inductance0.93 mH
Mechanical Q Factor3.57
Electrical Q Factor0.75
Total Q Factor0.62
Ratio78.16 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance229.9 μm/N
Effective Cone Diameter12.8 cm
Motor Efficiency Factor19 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass1.96 Kg
Equivalent Volume5.35 L

This is a 6.5 inch 4 ohm woofer features a paper cone, rubber surround, high power voice coil suspended in a ferrite magnet motor, and a steel basket. Designed to be a cost-effective high performance driver.