Transducer Size (Millimeters)18
DC Resistance3.39
Resonant Frequency389.15
Half Space Sensitivity77.22
Rated Noise Power1
Test Spectrum Bandwidth350-20kHz

Transducer Size (Millimeters)18
DC Resistance3.39 Ω±5.0%
Resonant Frequency389.15 Hz15%
Half Space Sensitivity @ 2.83V77.22 dB±1.01
Sensitivity @ 1W/1m73.8 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1 W
Test Spectrum Bandwidth350-20kHz 12 dB/Oc
Effective Piston Area1.9 cm2
Moving Mass0.1 g
Motor Force Factor0.76 T•m
Voice Coil Inner Diameter12 mm
Gap Height1 mm
Maximum Linear Excursion0.4 mm
Ferrofluid TypeAPG834
Minimum Impedance3.63 Ω±7.5%
Voice Coil Inductance0.03 mH
Mechanical Q Factor1.49
Electrical Q Factor1.96
Total Q Factor0.84
Ratio464.66 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance1347 μm/N
Effective Cone Diameter1.54 cm
Motor Efficiency Factor0.2 (T•m2)/Ω
Voice Coil Former MaterialKapton
Transducer Mass0.01 Kg
Equivalent Volume0.01 L

The PMT family of micro full range drivers features an ultra compact NdFeB magnet motors, a large excursion spiderless suspension system and Aluminium diaphragms for wide bandwidth. PMT micro drivers are a perfect choice for applications such as compact Bluetooth speakers and conference telephone/handsets.