DYNAMIC MICROPHONE HEADSET SPECIFICATIONS
Sending Characteristics (all models):
Microphone Type: Noise-cancelling dynamic
Frequency Range: 150 Hz to 10 kHz
Output Impedance: 150 ohms nominal
Noise Cancellation: 10 dB
Output Amplitude @ 1 kHz: -74 dBV +/- 4 dBV (126 to 316 V RMS) open-circuit with an input signal of -6 dB Pa
applied to the front surface of the microphone housing that is held on-axis at one inch
from the lip ring of an artificial mouth per IEEE Std 269-1992 and ITU-T P.51
Receiving Characteristics (SupraPlus Monaural and Dual-channel):
Frequency Range: 100 Hz to 10 kHz
Input Impedance: 150 ohms +/- 25%
Output Amplitude @ 1 kHz: -7 dB Pa +/- 3 dB Pa with an input signal of
-20 dBV through 10 ohms using a head-and-torso simulator per IEC 959, ANSI S3.36-1985,
and ITU-T P.58
µ
Receiving Characteristics (SupraPlus Binaural):
Frequency Range: 100 Hz to 10 kHz
Input Impedance: 75 ohms +/- 25%
Output Amplitude @ 1 kHz: -7 dB Pa +/- 3 dB Pa with an input signal of -20 dBV through 10 ohms using a
head-and-torso simulator per IEC 959, ANSI S3.36-1985, and ITU-T P.58
Receiving Characteristics (Ruggedized):
Frequency Range: 300 Hz to 10 kHz
Input Impedance: 150 ohms nominal (Dual Channel); 75 ohms nominal (Single Channel)
Output Amplitude @ 1 kHz: -11.8 dB Pa +/- 5.0 dB Pa into an IEC 60318 and ITU-T P.57 Type 1 coupler equipped
with a Bruel & Kjaer Type DB 0843 adapter with an input amplitude of -10.0 dBV
through 300 ohms
Note: 0 dB Pa = 94 dB SPL
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All other trademarks are the property of their respective owners.
(07-19) Printed in U.S.A.
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