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TYPE 4966

1/2" FREE-FIELD MICROPHONE, PREPOLARIZED

Free-field microphone designed for high‐precision and high sensitivity measurements with a frequency response of 5 Hz to 20 kHz.

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TYPE 4966

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A robust and stable free‐field microphone cartridge designed for high‐precision acoustic measurements. Type 4966 is developed and refined for measurements where a high sensitivity microphone with a full 20 kHz bandwidth is preferred and is optimized for use with the protection grid in place.

Microphone Type 4966 is prepolarized, so it is well suited for use in battery-operated equipment and environments with high humidity. 

  • Precision sound‐measurements
  • General purpose sound‐measurements
  • Electroacoustic measurements
TYPE 4966
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