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TYPE 4949

SURFACE MICROPHONE FOR  AUTOMOTIVE APPLICATIONS 

Automotive surface microphone designed for measurement of the true surface pressure. Ideal for mounting directly on the car surface during wind-tunnel tests and for measuring in confined spaces.

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TYPE 4949

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Type 4949 is a "car microphone" designed for measuring the true surface pressure in automotive applications. The microphone is exceptionally suited for mounting directly on the car surface during wind-tunnel tests or for measurement in confined spaces; for example, on the firewall or the underside of a vehicle.

  • Noise measurement on surfaces including glass and in confined spaces
  • Wind-tunnel testing
  • Low to medium noise measurements
  • Flush mounting
  • Connects to CCLD input

File

Description

Type

Languages

Size

Automotive Surface Microphones Types 4949 and 4949B

Technical Document English 327 KB
TYPE 4949
Sound field Pressure field
Polarization CCLD
Sensitivity [mV/Pa] 11.2 mV/Pa
Lower frequency [Hz] 5 Hz
Higher frequency [Hz] 20000 Hz
Lower dynamic range [dB] 30 dB
Higher dynamic range [dB] 140 dB
Diameter 1/2 inch
Venting Front
Minimum Temperature [°C] -30 °C
Maximum Temperature [°C] 100 °C
Minimum Temperature [°F] -22 °F
Maximum Temperature [°F] 212 °F
Output signal (connectivity) Passive