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 Resistance3.08 Ω±5.0%
Resonant Frequency64.95 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 Bandwidth60Hz-4KHz 12 dB/Oc
Effective Piston Area60.8 cm2
Moving Mass6.9 g
Motor Force Factor4.42 T•m
Voice Coil Inner Diameter25.8 mm
Gap Height4 mm
Maximum Linear Excursion4.6 mm
Ferrofluid Type
Minimum Impedance4.35 Ω±7.5%
Voice Coil Inductance0.27 mH
Mechanical Q Factor2.79
Electrical Q Factor0.45
Total Q Factor0.38
Ratio169.15 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance864.9 μm/N
Effective Cone Diameter8.8 cm
Motor Efficiency Factor6.4 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass0.62 Kg
Equivalent Volume4.49 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