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FAMILY 4988

1/4" PRESSURE-FIELD MICROPHONE WITH CCLD PREAMPLIFIER, PREPOLARIZED

Pressure-field microphone for measurements in small, closed couplers, close to hard reflective surfaces, or flush-mounted, with a frequency response of 20 Hz to 20 kHz.

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FAMILY 4988

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Microphone Type 4988-A is a 1/4" prepolarized pressure-field microphone laser welded to 1/4" CCLD preamplifier. The preamplifier connects to CCLD input conditioning and supports IEEEP1451.4 V1.0  Transducer Electronic Data Sheet (TEDS).

It is an all-titanium design that ensures maximum resistance to corrosion and minimum sensitivity to magnetic fields.

  • Measurements requiring an EN/IEC 61326 EMC compliant product
  • Measurements very close to sound ports of an audio device (near field)
  • Measurements in small acoustic chambers and test boxes where reflections occur
  • Measurements in unpredictable sound field conditions
  • Flush mounting
  • Production tests systems
  • Inside an acoustic coupler (pressure field)
  • Reference microphone for tuning of microphone arrays and active noise-cancelling systems

File

Description

Type

Languages

Size

4988-A – Data Sheet (bp0074)

¼-inch Pressure-field TEDS Microphone Type 4988-A

Technical Document English 634 KB
FAMILY 4988
Standard IEC 61094
Sound field Pressure field
Polarization CCLD
Sensitivity [mV/Pa] 11 mV/Pa
Lower frequency [Hz] 20 Hz
Higher frequency [Hz] 20 kHz
Lower dynamic range [dB] 29 dB
Higher dynamic range [dB] 146 dB
Diameter 1/4 inch
Venting Rear
Minimum Temperature [°C] -20 °C
Maximum Temperature [°C] 80 °C
Minimum Temperature [°F] -4 °F
Maximum Temperature [°F] 176 °F
Output signal (connectivity) Passive