HPD-40N16PET00-32

Transducer Size (Millimeters)38.1
DC Resistance32.8
Resonant Frequency81.8
Half Space Sensitivity74.18
Rated Noise Power0.01
Test Spectrum Bandwidth20Hz~20KHz

Transducer Size (Millimeters) 38.1
DC Resistance 32.8 Ω±5.0%
Resonant Frequency 81.8 Hz15%
Half Space Sensitivity @ 2.83V74.18 dB±1.01
Sensitivity @ 1W/1m80.4 dB±1.01
Rated Noise Power (IEC 268-5 18.1)0.01 W
Test Spectrum Bandwidth 20Hz~20KHz 12 dB/Oc
Effective Piston Area 10 cm2
Moving Mass 0.3 g
Motor Force Factor 2.42 T•m
Voice Coil Inner Diameter 16.36 mm
Gap Height 1 mm
Maximum Linear Excursion 0.8 mm
Ferrofluid Type
Minimum Impedance 33.53 Ω±7.5%
Voice Coil Inductance 0 mH
Mechanical Q Factor 2.71
Electrical Q Factor 1.01
Total Q Factor 0.74
Ratio 110.99 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 11.7 μm/N
Effective Cone Diameter 3.56 cm
Motor Efficiency Factor 0.2 (T•m2)/Ω
Voice Coil Former Material Nil
Transducer Mass 0.01 Kg
Equivalent Volume 1.64 L

HPD headphone, 40 mm, plastic diaphragm, NdFeB motor, no faceplate, 32 ohm