Type 40BI

Type 40BI
The Sound-intensity Pair Type 40BI is a complete set of two phase-matched ¼" intensity microphones, solid spacers and adapters for ¼" PreamplifiersType 26AA.

The Type 40BI is for measuring very high intensity levels where the dynamic range of the ½" Sound-intensity Pair Type 40AI is insufficient, or in situations where the small size of the Type 40BI is necessary.

Specifications Type 40BI
3 mV/Pa
Dynamic range:
40 - 168 dB re. 20µPa
Frequency response:
IEC 60651 Type 0
Phase response:
IEC 1043 Class 1
Polarisation voltage:
200 V
6.9 mm
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