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Spécifications techniques
PNR Noise Reduction Ratings （ NRR ）： 23dB
ANR Noise Reduction Ratings （ NRR ）： 29dB
Headphone
Type: Dynamic （Φ30）Frequency Response: 50 Hz to 20 kHz
Sensitivity:
95±5 dB SPL (1 kHz, 1 mW input per earcup side) full volume on ear simulator
Active Noise Attenuation: Dynamic 42 ohms:
Rate Input: 30mW Max. Input: 100mW
Speech Sound: Dynamic 300 ohms:
Rate Input: 30mW Max. Input: 100mW
Microphone and Amplifier:
Element Type: Noise-canceling electret
Frequency Response: 100Hz to 5 kHz
Operating Voltage (supplied by aircraft): 8-32 Volts DC
Matching Impedance: 150-1000 ohms
Sensitivity: -33±4 dB (Ref: 0dB SPL=20.0uPa at 1 kHz with 10 Vdc 150 ohms
AC load)
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