KNOWLES

KNOWLES - BJ microphone serie

Dimensions (mm):
7.87 x 5.59 x 4.01
Directivity:
Omni Noise canceling
Features:
Balanced armature mic Does not require bias voltage
Key features:
Knowles’ Magnetic Microphones (BJ Series) are based on balanced armature technology and are self-shielded against external magnetic fields.
The microphones offer high efficiency, stability, and reliability and are small in size.
The diaphragm of the BJ Series responds to pressure differential, giving high rejection of background noise.
Both face and edge ports are offered. In addition, there is a short distance between front and back ports resulting in improved noise rejection up to higher frequencies.

Balanced armature technology
High efficiency, stability and reliability
Self-shielded against external magnetic fields
Face and edge ports
Diaphragm responds to pressure differential giving high rejection of background noise
Short distance between front and back ports resulting in improved noise rejection up to higher frequencies
Reference Sensitivity (dB re 1V/0.1Pa @ 1 kHz) DC Supply (V) Max. Amplifier Current Drain (uA) Maximum Noise (dB re 1V) A weighted Nominal Output Impedance (Ω) Comments
BJ-21590-000
BJ-28411-000