4966-A-031 配备A计权CCLD前置放大器和BNC接头的预极化自由场传声器
专用于消除低频干扰，例如车身吊臂或道路噪声
使用场景
适用于消除低频干扰——例如风振颤动
因为它内置了A计权滤波器，可以滤除低频干扰
技术参数| 型号 | 4966-A-031 |
| Capacitance | 14 pF |
Diameter | ½" |
Dyn. range | 18 – 131 dB |
Freq. range | A-weighted – Hz |
Inherent noise | 16.5 dB A |
Lower limiting frequency -3dB | 3 Hz |
Optimised | Free field |
Polarization | Prepolarized |
Polarization voltages | 0 V |
| Sensitivity | 48.4 mV/Pa |
Pressure coefficient | -0.01 dB/kPa |
| Temperature range | -20 – 65 ℃ |
| Temperature coefficient | 0.003 dB/ºC |
Venting | Rear |
| Weight | gram |
| Sound field | Free-field |
Input type | CCLD IEPE |
| Microphone type | Free field |
