4964 ½英寸次声传声器
4964型设计用于要求高灵敏度次声传声器的高精度声学测量。经过预极化，4964型可与CCLD和经典的前置放大器一起使用。
使用场景
技术参数| 型号 | 4964 |
| Capacitance | 14 pF |
Diameter | 0.52 |
Dyn. range | 14.6 – 146 dB |
Freq. range | .02 – 20000 Hz |
Inherent noise | 14.2 dB A |
Lower limiting frequency -3dB | 0.02 Hz |
Optimised | Free field |
Polarization | Prepolarized |
Polarization voltages | 0 V |
| Sensitivity | 50 mV/Pa |
Pressure coefficient | -0.01 dB/kPa |
| Temperature range | -30 – 150 ℃ |
| Temperature coefficient | -0.006 dB/ºC |
Venting | Rear |
| Weight | gram |
| Sound field | Free-field |
| Input type | CCLD IEPE |
| Microphone type | Free field |
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