GRAS 40AZ 1/2" Low Frequency Prepolarized Microphone
This microphone is a general purpose 1/2" prepolarized free field microphone for low frequency acoustic measurements
We're using this microphone for measurements in low frequency sound field control (like calibration of low frequency test facility) in a array-setup with Gras 26CC microphone preamp.
Microphone specifications (full specs here):
- Open Circuit sensitivity at 250Hz 50mV / Pa
- Frequency response 1Hz to 10kHz +- 1dB
- Prepolarized
- Noisefloor 14dB(A)
- Upper limit 146dB at 3% distortion
Individual calibrationchart for [
]:
- sno.100229 to 100248 (box 1 w. first 16 of 32pcs. matched mics)
- sno.100249 to 100268 (box 2 w. last 16 of 32pcs. matched mics)
Work allways in progress - page will be updated !
Tell us what info you expect to find here - please.