B71 bone vibrators
B71 is a bone conduction earphones produced by Radio Ear company in the United States. According to ISO 389-3:1994, it serves as BC earphones used for audiometers. It serves as calibration RETVFL used with mechanical couplers that complies with IEC 60373:1990 . Its main performance are listed below.
Main technical indicators:
  • Model B71

  • Name bone vibrator

  • Type Bone conduction

  • Frequency range 250 Hz~4 kHz

  • Sensitivity 94 dB(Ref. 1.0 μN),@ 1 mW,1 kHz

  • Rated impedance 10 Ω、32 Ω、50 Ω、100 Ω or 300 Ω

  • Distortion(THD) <5,5%

  • Headband pressure 5,4 N±0,5 N

  • Weight 24 g

  • Manufacturer Radio Ear (United States)

*Specific indicators are subject to the product instruction manual
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