Dimensions: 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in)
Technical Bulletins
Application Notes
KA Mics
BL Series Piezo Ceramic Microphones
Knowles' Piezo Ceramic Microphones (BL Series) are rugged, stable, and versatile. BL microphones are available in three different package sizes: standard, thin, or 1/2 inch cylindrical shell and cable assembly. Both communication and broadband frequency response versions are offered. In addition, BL microphones have high vibration sensitivity, and may be used as accelerometers.
Features
- Omnidirectional
- High sensitivity
- Wide frequency range
- Integral FET amplifier
- High resistance to mechanical shock
- Various responses
- Two case sizes available
Piezoceramic mics (Search All Products) |
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| Model Id | Dimensions | 1 kHz sensitivity | Port location | Noise Max (Input Ref.) | Noise Max (Output Noise) | BL-21671-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -54.5 | 12S | 32 dB | n/a | BL-21785-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -69 | 12S | 34 dB | n/a | BL-21994-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -69 | Top | 34 dB | n/a | BL-23497-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -69 | Top | 34 dB | n/a | BL-27046-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -69 | 12S | 34 dB | n/a |
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