The microphones are 48V phantom powered and include an electronic data sheet. The Automated Sensor Detection (ASD) of the XL2 Analyzer automatically reads this data, i.e. the microphone model and calibration ...
... 61094 WS3F ¼" externally polarized free-field microphone with rear-venting. It is a high-precision Type 1 condenser microphone made according to IEC 61094-4 requirements. ...
These 1/4"-measuring microphones are pressure transducers. Special custom versions are also possible. Power supplies for the microphones can be either a constant current ...
... preamplifier such as Brüel & Kjær Type 2670 together with 1/8" to 1/4" Adaptor UA-0160. CALIBRATION The sensitivity of Type 4138 can be calibrated at 250 Hz using Pistonphone Type ...
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