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TYPE 4944

1/4" PRESSURE-FIELD MICROPHONE, PREPOLARIZED

Type 4944 is a ¼-inch Prepolarized Pressure-field Microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz To 70 kHz.

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TYPE 4944

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Prepolarized ¼″ Pressure-field Microphone Type 4944 is specially designed for high-level and high-frequency measurements. By using new materials and a new way of mounting the diaphragm, the microphone is geared to withstand rough handling. The assembly of the microphone in a clean room environment ensures that the microphone can be used in high-humidity environments and still produce reliable results. Type 4944 can be used with sound level meters to measure high sound pressure levels

  • High-level measurements
  • High-frequency measurements
  • Flush mounting
  • In small closed couplers, close to hard reflective surfaces or flush-mounted
  • The sensitivity has been optimised to allow measurements of high sound pressure levels without clipping in the built-in CCLD preamplifier.
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TEDS Microphones Data Sheets English
Prepolarized Pressure-field 1/4'' Microphone Data Sheets English
TEDS Microphones Data Sheets Japanese
TYPE 4944
Standard IEC 61094
Sound field Pressure field
Polarization voltage 0V
Sensitivity 0.9 mV/Pa
Lower limiting frequency 4 Hz
Higher limiting frequency 70 kHz
Inherent noise 30 dB(A)
Upper limiting of dynamic range 170 dB
Diameter 1/4 inch
Venting Side
Minimum Temperature -20 °C
Maximum Temperature 100 °C
Minimum Temperature -4 °F
Maximum Temperature 212 °F

설계 및 견고성

마이크 전면의 모양은 플러시 마운트 시 우수한 마이크 성능을 보장합니다. 마이크 하우징의 레이저 용접 다이어프램은 플러시 마운트 중 거친 취급에 대한 감도를 보장합니다.

보정

감도는 ¼-inch Adaptor DP-0775를 사용한 Pistonphone Type 4228을 통해 250 Hz에서 보정할 수 있습니다. 압력 필드 응답은 어댑터 DB-0264가 있는 액추에이터 UA- 0033을 사용하여 측정할 수 있습니다. 압력 필드 응답은 액추에이터 응답과 같습니다.