Transducer Size (Millimeters)20
DC Resistance3.48
Resonant Frequency378.1
Half Space Sensitivity78.47
Rated Noise Power1
Test Spectrum Bandwidth350-20K

Transducer Size (Millimeters) 20
DC Resistance 3.48 Ω±5.0%
Resonant Frequency 378.1 Hz15%
Half Space Sensitivity @ 2.83V78.47 dB±1.01
Sensitivity @ 1W/1m75.7 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1 W
Test Spectrum Bandwidth 350-20K 12 dB/Oc
Effective Piston Area 2.2 cm2
Moving Mass 0.2 g
Motor Force Factor 0.83 T•m
Voice Coil Inner Diameter 12 mm
Gap Height 1 mm
Maximum Linear Excursion 0.4 mm
Ferrofluid Type APG 834
Minimum Impedance 4.25 Ω±7.5%
Voice Coil Inductance 0.03 mH
Mechanical Q Factor 1.14
Electrical Q Factor 1.98
Total Q Factor 0.72
Ratio 522.24 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 1083 μm/N
Effective Cone Diameter 1.66 cm
Motor Efficiency Factor 0.2 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 0.01 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.