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FAMILY 4188

½-INCH FREE-FIELD MICROPHONE, PREPOLARIZED

Free-field microphone for measurements in transport-noise measurements, architectural acoustics and electroacoustics over a frequency range of 8 Hz to 12.5 kHz.

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FAMILY 4188

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Type 4188 is designed for free-field measurements where an economy microphone with medium sensitivity is required. Being prepolarized, Type 4188 can be used with both CCLD and classical preamplifiers.

  • Medium class sound level meters
  • Equipment complying with IEC 61672 class 1
  • Random-incidence measurements
  • Portable sound measuring equipment
  • Being prepolarized, Type 4188 is especially well suited for battery-operated equipment or for operation in environments with high humidity.

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TEDS Microphones Data Sheets English
FAMILY 4188
Standard ANSI S1.4
Sound field Free field
Polarization Classical, CCLD
Sensitivity 31.6 mV/Pa
Lower frequency 8 Hz, 20 Hz
Higher frequency 12.5 kHz
Lower dynamic range 15.8 dB, 19 dB
Higher dynamic range 146 dB, 138 dB
Diameter 1/2 inch
Venting Rear
Minimum Temperature -30 °C
Maximum Temperature 100 °C
Minimum Temperature -22 °F
Maximum Temperature 212 °F
Output signal (connectivity) Passive