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Type 4138 Microphone Cartridge

TYPE 4138

1/8" PRESSURE-FIELD MICROPHONE, EXTERNALLY POLARIZED

Pressure-field microphone designed for very high-frequency measurements in confined spaces with a frequency range of 6.5 Hz to 140 kHz.

Code Standard Sound field Polarization voltage Sensitivity Lower limiting frequency Higher limiting frequency Inherent noise Upper limiting of dynamic range Diameter Venting Lower operating temperature Higher operating temperature Lower operating temperature Higher operating temperature
-4138--- IEC 61094 Pressure field 200V 1 mV/Pa 6.5 Hz 140 kHz 43 db_a 168 dB 1/8 inch Side -30 °C 100 °C -22 °F 212 °F

Type 4138 is designed for high-level and very high-frequency measurements and measurements in confined spaces. Being externally polarized, Type 4138 must be used with a classical preamplifier.

  • High-level and very high-frequency measurements
  • Pulse measurements
  • Applications which require a high degree of spatial resolution or where space is limited, for example, model testing

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