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½"" free-field microphone with Type 2671 preamplifier
4189-A-021 型专为高精度自由场测量设计，用于需要高灵敏度传声器的环境。
使用场合
- 高精度声测量
- 高档声级计
- 符合 IEC 61672 Class 1 标准的设备
- Capacitance
- pF
- Diameter
- 1/2
- Dyn. range
- 16.5 – 134 dB
- Freq. range
- 20 – 20000 Hz
- Inherent noise
- 16.5 dB A
- Lower limiting frequency -3dB
- 12 Hz
- Optimised
- Free field
- Polarization
- Prepolarized
- Polarization voltages
- V
- Pressure coefficient
- -0.01 dB/kPa
- Sensitivity
- 50 mV/Pa
- Standards
- IEC 61094-4 WS2F
- Temperature coefficient
- -0.006 dB/ºC
- Temperature range
- -20 – 80 ℃
- Venting
- Rear
- Weight
- gram
- Sound field
- Free-field
- Input type
- CCLD IEPE
- Microphone type
- Free field
