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PMT-18N12AL03-04 PMT-18N12AL03-04 PMT-18N12AL03-04


Platform: Tymphany
Driver Type: Full Range
Size: 18 mm
Motor: Neodymium
Frame: Plastic Basket
Impedance: 4 Ω
Diaphragm: Al (Aluminium)

Frequency & Impedance Response


Technical Specifications

Driver Size 18 mm
DC Resistance 3.39 Ω ±5.0%
Resonant Frequency 389.15 Hz 15%
Half Space Sensitivity @ 2.83V 77.22 dB ±1.01
Sensitivity @ 1W/1m 73.8 dB ±1.01
Rated Noise Power (IEC 268-5 18.1) 1 W
Test Spectrum Bandwidth 350-20kHz 12 dB/Oct
Effective Piston Area 1.9 cm2
Moving Mass 0.1 g
Motor Force Factor 0.76 T•m
Voice Coil Inner Diameter 12 mm
Gap Height 1 mm
Maximum Linear Excursion 0.4 mm
Ferrofluid Type APG834
Minimum Impedance   3.63 Ω ±7.5%
Voice Coil Inductance 0.03 mH
Mechanical Q Factor 1.49
Electrical Q Factor 1.96
Total Q Factor 0.84
Ratio 464.66 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 1347 μm/N
Effective Cone Diameter 1.54 cm
Motor Efficiency Factor 0.2 (T•m2)/Ω
Voice Coil Former Material Kapton
Driver Mass 0.01 Kg
Equivalent Volume 0.01 L

Product Info

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.

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