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 Resistance 6 Ω±5.0%
Resonant Frequency 46.7 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 Bandwidth 40Hz-7KHz 12 dB/Oc
Effective Piston Area 237.8 cm2
Moving Mass 27.9 g
Motor Force Factor 8.75 T•m
Voice Coil Inner Diameter 38.6 mm
Gap Height 6 mm
Maximum Linear Excursion 2.7 mm
Ferrofluid Type
Minimum Impedance 6.5 Ω±7.5%
Voice Coil Inductance 0.31 mH
Mechanical Q Factor 2.49
Electrical Q Factor 0.64
Total Q Factor 0.51
Ratio 91.57 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 417 μm/N
Effective Cone Diameter 17.4 cm
Motor Efficiency Factor 12.8 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 1.84 Kg
Equivalent Volume 33.35 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.