Transducer Size (Millimeters)101.6
DC Resistance3.08
Resonant Frequency64.95
Half Space Sensitivity88.29
Rated Noise Power35
Test Spectrum Bandwidth60Hz-4KHz

Transducer Size (Millimeters) 101.6
DC Resistance 3.08 Ω±5.0%
Resonant Frequency 64.95 Hz15%
Half Space Sensitivity @ 2.83V88.29 dB±1.01
Sensitivity @ 1W/1m85.6 dB±1.01
Rated Noise Power (IEC 268-5 18.1)35 W
Test Spectrum Bandwidth 60Hz-4KHz 12 dB/Oc
Effective Piston Area 60.8 cm2
Moving Mass 6.9 g
Motor Force Factor 4.42 T•m
Voice Coil Inner Diameter 25.8 mm
Gap Height 4 mm
Maximum Linear Excursion 4.6 mm
Ferrofluid Type
Minimum Impedance 4.35 Ω±7.5%
Voice Coil Inductance 0.27 mH
Mechanical Q Factor 2.79
Electrical Q Factor 0.45
Total Q Factor 0.38
Ratio 169.15 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 864.9 μm/N
Effective Cone Diameter 8.8 cm
Motor Efficiency Factor 6.4 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 0.62 Kg
Equivalent Volume 4.49 L

This 4inch 4ohm woofer member of the classic product family. The classic series consists of all the highly regarded transducers that have been appraised and loved by so many customers over the years. This driver features a paper cone, rubber surround, a ferrite magnet and a aluminum basket, the operate effective frequency response betweet 60Hz to 4KHz. Is designed to be a high performance diver