Transducer Size (Millimeters)203.2
DC Resistance6
Resonant Frequency46.7
Half Space Sensitivity90.34
Rated Noise Power80
Test Spectrum Bandwidth40Hz-7KHz

Transducer Size (Millimeters)203.2
DC Resistance6 Ω±5.0%
Resonant Frequency46.7 Hz15%
Half Space Sensitivity @ 2.83V90.34 dB±1.01
Sensitivity @ 1W/1m89.4 dB±1.01
Rated Noise Power (IEC 268-5 18.1)80 W
Test Spectrum Bandwidth40Hz-7KHz 12 dB/Oc
Effective Piston Area237.8 cm2
Moving Mass27.9 g
Motor Force Factor8.75 T•m
Voice Coil Inner Diameter38.6 mm
Gap Height6 mm
Maximum Linear Excursion2.7 mm
Ferrofluid Type
Minimum Impedance6.5 Ω±7.5%
Voice Coil Inductance0.31 mH
Mechanical Q Factor2.49
Electrical Q Factor0.64
Total Q Factor0.51
Ratio91.57 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance417 μm/N
Effective Cone Diameter17.4 cm
Motor Efficiency Factor12.8 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass1.84 Kg
Equivalent Volume33.35 L

This is a 8inch 8ohm woofer , with a poly cone and rubber surround, features a ferrite magnet, also with a die-cast aluminum basket. Is designed to be a high performance driver.