1/2“自由场传声器，预极化
自由场传声器专为高精度和高灵敏度测量而设计，频率响应范围为5 Hz至20 kHz。
4966 型
是一款坚固稳定的自由场传声器，专为高精度声学测量而设计。4966型经过开发和改进，适用于需要完整20 kHz带宽高灵敏度传声器的场合，并针对保护格栅进行了优化。
4966型传声器为预极化设计，因此非常适合用于电池供电设备和高湿度环境。
| Standard | IEC 61094 |
| Sound field | Free field |
| Polarization voltage | 0V |
| Sensitivity | 50 mV/Pa |
| Lower limiting frequency | 5 Hz |
| Higher limiting frequency | 20 kHz |
| Inherent noise | 14.6 dB(A) |
| Upper limiting of dynamic range | 144 dB |
| Diameter | 1/2 inch |
| Venting | Rear |
| Minimum Temperature | -30 °C |
| Maximum Temperature | 150 °C |
| Minimum Temperature | -22 °F |
| Maximum Temperature | 302 °F |
Being prepolarized, Type 4966 can be used with both CCLD* and classical Brüel & Kjær preamplifiers.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.