1/2” High Frequency and High Amplitude Prepolarized Microphone
Model 377A06 is free-field prepolarized microphone recommended for applications where a wide range of frequencies or higher amplitudes are required in a 1/2” package.
- Frequency: 3 Hz - 40 kHz F (±3dB)
- Max Amplitude: 160 dB (3% distortion)
- Cartridge Noise: 20 dBA
- Sensitivity: 12.6 mV/Pa
- Temperature: -40 to +120 °C
- Polarization: Prepolarized (0V)
- Environmental monitoring
- Railway testing and horn tests
- Alarm monitoring
- Sonic boom measurements
- General wide frequency tests
- General high amplitude tests
Use of model 377A06 free-field microphones
Model 377A06 is a 1/2” (12mm) prepolarized microphone. It has a flat response in applications where high frequencies (up to 40 kHz) need to be measured very accurately. As an alternative to a standard high sensitivity (50 mV/Pa) microphone, it has an enhanced upper dynamic range and doesn’t overload or saturate for measurements above 136 dB. Until now, these applications would require a 1/4” microphone and preamplifier combination which is both higher in price and has significantly higher inherent noise than the 377A06 microphone and preamplifier system.
Acoustic pressure waves may be altered by objects in the sound field including the microphone used to measure it. To correct for this effect, the 377A06 free-field microphone is calibrated to compensate for its own presence, providing more accurate measurements within a free-field.
Key benefits of the 377A06 include the ability to measure to 40 kHz (±3 dB), a 3% distortion rating to 160 dB, and a cost effective 1/2” package that maintains a 20 dBA noise floor.
Model 378A06 is a system that includes both the microphone and preamplifier.