Transducer Size (Millimeters)40
DC Resistance4.14
Resonant Frequency320.25
Half Space Sensitivity83.94
Rated Noise Power1
Test Spectrum Bandwidth200 Hz - 20k Hz

Transducer Size (Millimeters) 40
DC Resistance 4.14 Ω±5.0%
Resonant Frequency 320.25 Hz15%
Half Space Sensitivity @ 2.83V83.94 dB±1.01
Sensitivity @ 1W/1m81.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1 W
Test Spectrum Bandwidth 200 Hz - 20k Hz 12 dB/Oc
Effective Piston Area 7.4 cm2
Moving Mass 0.4 g
Motor Force Factor 1.23 T•m
Voice Coil Inner Diameter 11 mm
Gap Height 1.2 mm
Maximum Linear Excursion 0.4 mm
Ferrofluid Type APG834
Minimum Impedance 4.19 Ω±7.5%
Voice Coil Inductance 0.03 mH
Mechanical Q Factor 2.54
Electrical Q Factor 2.19
Total Q Factor 1.18
Ratio 271.86 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 623.5 μm/N
Effective Cone Diameter 3.08 cm
Motor Efficiency Factor 0.4 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 0.02 Kg
Equivalent Volume 0.05 L

This 20 mm x 40 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 composite Al cone, and a high-temperature polycarbonate frame.