Transducer Size (Millimeters)165.1
DC Resistance3.03
Resonant Frequency71.32
Half Space Sensitivity91.68
Rated Noise Power30
Test Spectrum Bandwidth50Hz-4KHz

Transducer Size (Millimeters) 165.1
DC Resistance 3.03 Ω±5.0%
Resonant Frequency 71.32 Hz15%
Half Space Sensitivity @ 2.83V91.68 dB±1.01
Sensitivity @ 1W/1m88.8 dB±1.01
Rated Noise Power (IEC 268-5 18.1)30 W
Test Spectrum Bandwidth 50Hz-4KHz 12 dB/Oc
Effective Piston Area 141 cm2
Moving Mass 15.2 g
Motor Force Factor 5.75 T•m
Voice Coil Inner Diameter 31.81 mm
Gap Height 6 mm
Maximum Linear Excursion 2.7 mm
Ferrofluid Type
Minimum Impedance 4.12 Ω±7.5%
Voice Coil Inductance 0.17 mH
Mechanical Q Factor 1.55
Electrical Q Factor 0.62
Total Q Factor 0.45
Ratio 160.28 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 326.6 μm/N
Effective Cone Diameter 13.4 cm
Motor Efficiency Factor 10.9 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 1.28 Kg
Equivalent Volume 9.12 L

This is a 6.5inch 4ohm woofer, features a pp cone with rubber surround, a high powerful voice coil suspended in a ferrite magnet motor, supporting high excursion and sensitivity, this driver also features a rigid cost aluminium basket. Is designed to be a high performance transducer.