TDH-39P Supra-aural earphones

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The TDH-39P is an supra-aural earphone produced by Telephonics in the United States. It is specified in ISO 389-1:2017 for use as a earphone in audiometers calibrated with a sound coupler that complies with IEC 60318-3:1998 to determine RETSPL. Its main performance specifications are listed in the table below.

Main technical indicators：

Model TDH-39P
Name Supra-aural earphone
Type Air conduction
Frequency range 100 Hz~8 kHz
Sensitivity 108 dB±4 dBSPL， @ 1 mW，1 kHz
Rated impedance 10 Ω（or 100 Ω）
Distortion（THD） <1%
Headband pressure 4,5 N±0,5 N
Manufacturer Telephonics （United States）

*Specific indicators are subject to the product instruction manual

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