Magnetic

Knowles offers boom microphones that utilize magnetic microphone elements.  These elements generate their own signal and, unlike traditional dynamic microphones, do not require a bias voltage.  This feature can be helpful to ensure compatibility with radios. 

BJ-based boom microphones have been chosen over dynamic microphones to upgrade performance and reliability for military and first responder applications.

Features

Magnetic
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Additional Links

Product Families Model ID Dimensions 1 kHz sensitivity Port Location Directional Downloads
BJ BJ-21590-000 7.92mm x 5.70mm x 4.14mm (.312in x .224in x .163in) -75 0Jn Omni-directional
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BJ BJ-28411-000 7.92mm x 5.70mm x 4.14mm (.312in x .224in x .163in) -88 0n / 12n Noise Canceling
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(20.13 MB)