These elements generate their own signal and, unlike traditional electret 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.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Preferred |
|---|---|
| Description | EC ST microphone |
| Diameter / length [mm] | 7,87 |
| Width [mm] | 5.59 |
| Thickness[mm] | 4,01 |
| Directivity | Omnidirectional |
| Impedance [Ohm] | 3900 |
| Nominal Voltage [V] | NA |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -55.5 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | 140 |
| Connection | 2-Wire |
These elements generate their own signal and, unlike traditional electret 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.
| Product status | Preferred |
|---|---|
| Description | EC ST microphone |
| Diameter / length [mm] | 7,87 |
| Width [mm] | 5.59 |
| Thickness[mm] | 4,01 |
| Directivity | Omnidirectional |
| Impedance [Ohm] | 3900 |
| Nominal Voltage [V] | NA |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -55.5 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | 140 |
| Connection | 2-Wire |
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Preferred |
|---|---|
| Description | EC ST microphone |
| Diameter / length [mm] | 7,87 |
| Width [mm] | 5.59 |
| Thickness[mm] | 4,01 |
| Directivity | Omnidirectional |
| Impedance [Ohm] | 3900 |
| Nominal Voltage [V] | NA |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -55.5 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | 140 |
| Connection | 2-Wire |
These elements generate their own signal and, unlike traditional electret 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.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
Headquarters
SAS SELTECH
2, Allée des Cerisiers
F – 94042 Créteil FRANCE
Tel EU : +33 1 48 92 90 02
Tel NA : +1 (919) 481 6896
SELTECH is an international solution provider with deep expertise in acoustics and sensors. We offer innovative solutions to our customers’ challenges, from design to production.
