Free-Field Measurement Microphones Datasheets

Prepolarized Free-Field Microphone -- Model EM40AE
from Meggitt Sensing Systems - Measurement Group

The Endevco microphone model EM40AE is a ½-inch precision condenser microphone for general purpose measurements in open acoustic fields. It is a prepolarized free-field microphone with a large dynamic range and a wide frequency response. As a free-field microphone, the model EM40AE is for... [See More]

  • Sound Field: Free-Field
  • Dynamic Range: 15 to 144
  • Frequency Response: 3.15 to 20000
  • Nominal Size: 1/2"
GRAS 1/2inch Free-Field Response Microphone: 50mV/Pa -- 782121-02
from National Instruments

National Instruments is partnering with G.R.A.S. Sound & Vibration to offer measurement-grade microphones. Acoustic measurement microphones must meet stringent standards not found in consumer or even professional audio products. You can use these microphones with all NI dynamic signal analyzers. NI... [See More]

  • Sound Field: Free-Field
  • Sensitivity: 50
  • Nominal Size: 1/2"
  • Features: Integral Pre-amplifier
1/2" Prepolarized Low Noise Microphone -- 378A04
from PCB Piezotronics, Inc.

The 378A04 is a matched system comprised of a high sensitivity microphone and a low noise preamplifier that contains a built-in filter that enables the free-field response to remain flat over a wide frequency range. The system requires a minimum of 4 mA and measures to 5.5 dBA (typical) within a... [See More]

  • Sound Field: Free-Field
  • Dynamic Range: 80
  • Frequency Response: 10 to 20000
  • Nominal Size: 1/2"
PRECISION FREE FIELD MCROPHONE 1/2INCH 4HZ-40KHZ -- 2540 [2540 from Larson Davis]
from Radwell International


  • Sound Field: Free-Field
  • Frequency Response: 4 to 40000
Measurement Microphone -- M2211
from NTi Audio AG

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 data. This promotes faster setup and ensures accurate measurements. The microphone bodies... [See More]

  • Sound Field: Free-Field
  • Dynamic Range: 21 to 144
  • Frequency Response: 5 to 20000
  • Sensitivity: 20