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Knowles ST microphones - NR Series (4.00x5.59x2.28 mm)

NRThe NR Series close talking microphones deliver state-of-the-art noise canceling performance.
NR microphones are used as headset microphones in the most demanding communication and speech recognition environments.
The NR Series microphones are available in boom microphone packages. See Boom section for details.

    • Integral FET amplifier
    • Diaphragm responds to pressure differential giving high rejection of background noise
    • Withstands severe environmental conditions
    • Low vibration sensitivity
    • High electoacoustical sensitivity
    • Superior noise canceling performance
    • Lead attachment available
 Model Picture Sensitivity @ 1kHz DC Supply (Vdc) Max. Ampli. Current Drain (uA) "A" Weighted Noise *1kHz
**re 1Vrms
Nom. Output Imp. (Ω) Comments
NR-23158-000 NR-23158-000 -49.0±3 1.3 nom. 10 max 50 -100 4400 3-Wire
NR-23159-000 NR-23159-000 -65.0±3 1.3 nom. 10 max 200 -100 2500 2-Wire
NR-23160-000 NR-23160-000 -52.0±3 1.3 nom. 10 max 200 -100 2500 2-Wire
NR-25994-000 NR-25994-000 -49.0±3 1.3 nom. 10 max 50 -100 4400 3-Wire
NR-25994-D63 NR-25994-D63 -55.0±4 1.3 nom. 10 max 300 -100 2000 2-Wire
NR-30610-D63 NR-30610-D63 -59.0±3 3.0 nom. 10 max 550 -100 2000 2-Wire
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Last Updated: Wednesday, 22 May 2013 04:07

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