Transducer Size (Millimeters)20
DC Resistance3.62
Resonant Frequency398.7
Half Space Sensitivity76.09
Rated Noise Power1
Test Spectrum Bandwidth400-20K

Transducer Size (Millimeters) 20
DC Resistance 3.62 Ω±5.0%
Resonant Frequency 398.7 Hz15%
Half Space Sensitivity @ 2.83V76.09 dB±1.01
Sensitivity @ 1W/1m73.5 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1 W
Test Spectrum Bandwidth 400-20K 12 dB/Oc
Effective Piston Area 2.2 cm2
Moving Mass 0.1 g
Motor Force Factor 0.5 T•m
Voice Coil Inner Diameter 12 mm
Gap Height 0.8 mm
Maximum Linear Excursion 0.3 mm
Ferrofluid Type
Minimum Impedance 4.46 Ω±7.5%
Voice Coil Inductance 0.02 mH
Mechanical Q Factor 1.89
Electrical Q Factor 4.49
Total Q Factor 1.33
Ratio 300 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 1294 μm/N
Effective Cone Diameter 1.66 cm
Motor Efficiency Factor 0.1 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 0 Kg
Equivalent Volume 0.01 L

This 20 mm 4 ohm compact Premium Micro Transducer is designed for computer, television array, and similar applications. It features a neodymium-iron-boron magnet, a light aluminium cone, and a high-temperature polycarbonate frame. The PMT family`s transducers feature low resonant frequencies and a full range bandwidth.