Special Microphones

Special microphones designed for specific measurement applications. Brüel & Kjær provide four special microphone types ranging from outdoor microphones, surface microphones, array microphones, and probe microphones. Each microphone provided with ranging adaptability for specific environments and measurement conditions.

  • ¼-inch sound intensity microphone pair, 4 Hz to 100 kHz, 200V polarization

    TYPE 4178

    1/4" Sound Intensity Microphone Pair, Ext. Polarized

    Sound Intensity Microphones specially designed for high level and high frequency measurements over a frequency range of 4 Hz to 100 kHz,  with broadband matching of phase responses.

    • Dyn. range : 28 – 164 dB
    • Freq. range : 2.6 – 180000 Hz
    • Polarization voltages : 200 V
    • Sensitivity : 4 mV/Pa
    • Temperature range : -40 – 150 ℃
  • 4197 parts

    TYPE 4197

    ½-inch Microphone pair for Sound Intensity

    Phase-matched pair of ½-inch microphones, designed for being used with Brüel & Kjær’s range of sound intensity analyzers.

    • Dyn. range : 20 – 162 dB
    • Freq. range : 0.3 – 20000 Hz
    • Polarization voltages : 200 V
    • Sensitivity : 11.2 mV/Pa
    • Temperature range : -10 – 50 ℃
  • Surface microphone Type 4948

    TYPE 4948

    Aerospace Surface Microphone

    Surface Microphone Type 4948 is designed to be used in aerospace. For example, on airplane surfaces during in-flight testing and is also well suited to wind-tunnel testing, limited spaces, or near to hard reflective surfaces.

    • Dyn. range : 55 – 160 dB
    • Freq. range : 5 – 20000 Hz
    • Polarization voltages : V
    • Sensitivity : 1.4 mV/Pa
    • Temperature range : -55 – 100 ℃
  • Aerospace surface microphone with 2 coaxial cables TYpe 4948-B

    TYPE 4948-B

    Aerospace Surface Microphone 

    Surface Microphone Type 4948-B is designed for measuring airplane surfaces during in-flight testing. The microphone also well suited to wind-tunnel testing, limited spaces, or near to hard reflective surfaces, and is supplied with two coaxial cables and CIC.

    • Dyn. range : 55 – 160 dB
    • Freq. range : 5 – 20000 Hz
    • Polarization voltages : V
    • Sensitivity : 1.4 mV/Pa
    • Temperature range : -55 – 100 ℃
  • Automotive surface microphone with 1 coaxial cable Type 4949

    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.

    • Dyn. range : 30 – 140 dB
    • Freq. range : 5 – 20000 Hz
    • Polarization voltages : V
    • Sensitivity : 11.2 mV/Pa
    • Temperature range : -30 – 100 ℃
  • Automotive surface microphone with 2 coaxial cables Type 4949-B

    TYPE 4949-B

    Automotive Surface Microphone

    Automotive Surface Microphone with two coaxial cables and CIC, designed for measurement of the true surface pressure, especially in automotive applications. It is well-suited for mounting directly on the car surface during wind-tunnel tests or for easy measurement in confined spaces.

    • Dyn. range : – dB
    • Freq. range : – Hz
    • Polarization voltages : V
    • Sensitivity : mV/Pa
    • Temperature range : – ℃
  • 10 kHz array microphone Type 4957

    TYPE 4957

    10 KHZ Array Microphone

    10 kHz Array Microphone for use in systems requiring a large number of microphones, for example, beamforming arrays, STSF measurements, and non-stationary STSF measurements.

    • Dyn. range : 32 – 134 dB
    • Freq. range : 50 – 10000 Hz
    • Polarization voltages : 0 V
    • Sensitivity : 11.2 mV/Pa
    • Temperature range : -10 – 55 ℃
  • 20 kHz precision array microphone Type 4958

    TYPE 4958

    Array Microphone for 20 KHZ 

    Precision array microphone for STSF measurements, non-stationary STSF measurements and beamforming arrays.

    • Dyn. range : 28 – 140 dB
    • Freq. range : 10 – 20000 Hz
    • Polarization voltages : 0 V
    • Sensitivity : 11.2 mV/Pa
    • Temperature range : -10 – 55 ℃
  • Type 4959

    TYPE 4959

    Short Array Microphone for 20 kHz, Prepolarized

    Short array microphone designed for use in our hand-held and foldable microphone array systems.

    • Dyn. range : 32 – 134 dB
    • Freq. range : 50 – 20000 Hz
    • Polarization voltages : V
    • Sensitivity : 11.2 mV/Pa
    • Temperature range : -10 – 55 ℃
  • Type 4182

    TYPE 4182

    Probe Microphone

    Probe Microphone Type 4182 is optimized for near-field sound pressure measurements in places with limited space, or in harsh environments where a conventional microphone would be unsuitable.

    • Dyn. range : 42 – 164 dB
    • Freq. range : 1 – 20000 Hz
    • Polarization voltages : 200 V
    • Sensitivity : 3.16 mV/Pa
    • Temperature range : -10 – 700 ℃