Transducer Size (Millimeters)30
DC Resistance3.53
Resonant Frequency249.75
Half Space Sensitivity81.58
Rated Noise Power1.5
Test Spectrum Bandwidth250Hz-20KHz

Transducer Size (Millimeters) 30
DC Resistance 3.53 Ω±5.0%
Resonant Frequency 249.75 Hz15%
Half Space Sensitivity @ 2.83V81.58 dB±1.01
Sensitivity @ 1W/1m78.5 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1.5 W
Test Spectrum Bandwidth 250Hz-20KHz 12 dB/Oc
Effective Piston Area 4.9 cm2
Moving Mass 0.5 g
Motor Force Factor 1.72 T•m
Voice Coil Inner Diameter 18 mm
Gap Height 1.5 mm
Maximum Linear Excursion 1.1 mm
Ferrofluid Type APG834
Minimum Impedance 3.91 Ω±7.5%
Voice Coil Inductance 0.04 mH
Mechanical Q Factor 1.71
Electrical Q Factor 0.95
Total Q Factor 0.61
Ratio 408.76 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 802.3 μm/N
Effective Cone Diameter 2.49 cm
Motor Efficiency Factor 0.8 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 0.03 Kg
Equivalent Volume 0.03 L

This 30 mm 4 ohm compact premium micro transducer is designed for computer, television array, and similar applications. It features a neodymium magnet, a light aluminium cone, and a high-temperature polycarbonate frame. The PMT family`s transducers feature low resonant frequencies, low THD and a full range bandwidth.