Measurement microphone cartridges

Measurement microphone cartridges

Measurement microphones are available in many types covering various frequency ranges, dynamic ranges and application situations. Selecting a microphone involves a number of choices, which can be summarized as:

• prepolarized vs. Externally-polarized
• Free-field, Pressure or Random-incidence
• Dynamic range
• Frequency range

 

  1. Prepolarized cartridges (0 Volt)
    Prepolarized cartridges (0 Volt)
  2. Externally polarized cartridges (200 V)
    Externally polarized cartridges (200 V)
  1. 40AE 1/2" Free-Field Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 15 dB(A) to 148 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AE 1/2" Prepolarized Free-Field Microphone

    The G.R.A.S. 40AE is a 1/2" Prepolarized free-field microphone for measuring medium sound pressure levels at medium frequencies. The equivalent externally polarized 200 V type is G.R.A.S. 40AF.

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  2. 40BE-S3 1/4" Free-Field Mic, Front vented
    Freq range: 4 Hz to 80 kHz
    Dyn range: 30 dB(A) to 168 dB
    Sensitivity: 4 mV/Pa

    G.R.A.S. 40BE-S3 1/4" Prepolarized Free-Field Microphone, Front vented

    The 40BE-S3 is an IEC 61094 WS3F 1/4” prepolarized free-field microphone with front venting.

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  3. 40BD-S3 1/4" Pressure Mic
    Freq range: 4 Hz to 70 kHz
    Dyn range: 44 dB(A) to 166 dB
    Sensitivity: 1.6 mV/Pa

    G.R.A.S. 40BD-S3 1/4" Prepolarized Pressure Microphone

    The 40BD-S3 is an IEC 61094 WS3P ¼" prepolarized pressure microphone with front venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements. Its low sensitivity makes it ideal for sound measurements at high frequencies and high sound pressure levels of up to 174 dB. Its small size reduces the effects of diffraction and reflections around the microphone, resulting in a frequency range that extends up to 70 kHz.

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  4. 40DD 1/8" Pressure Mic
    Freq range: 6.5 Hz to 70 kHz
    Dyn range: 40 dB(A) to 175 dB
    Sensitivity: 0.7 mV/Pa

    G.R.A.S. 40DD 1/8" Prepolarized Pressure Microphone

    The 40DD is an IEC 61094 1/8" prepolarized pressure microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements. Its tiny size allows it to be used for measuring very high frequency sounds without disturbing the sound field. It can measure sound pressure levels up to 174 dB in the range of 6 Hz to 140 kHz. Learn More
  5. 40BD 1/4" Pressure Mic
    Freq range: 4 Hz to 70 kHz
    Dyn range: 44 dB(A) to 166 dB
    Sensitivity: 1.6 mV/Pa

    G.R.A.S. 40BD 1/4" Prepolarized Pressure Microphone

    The 40BD is an IEC 61094 WS3P ¼" prepolarized pressure microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements. Its low sensitivity makes it ideal for sound measurements at high frequencies and high sound pressure levels of up to 174 dB. Its small size reduces the effects of diffraction and reflections around the microphone, resulting in a frequency range that extends up to 70 kHz. Learn More
  6. 40BE 1/4" Free-Field Mic
    Freq range: 4 Hz to 80 kHz
    Dyn range: 30 dB(A) to 168 dB
    Sensitivity: 4 mV/Pa

    G.R.A.S. 40BE 1/4" Prepolarized Free-Field Microphone

    The 40BE is an IEC 61094 WS3F 1/4” prepolarized free-field microphone with rear-venting. The externally polarized equivalent is 40BF.

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  7. 40GI 1/2" Intensity Mic Pair
    Freq response: IEC 60651 Type 0 IEC
    Dyn range: 27 dB(A) to 163 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40GI 1/2" Prepolarized Intensity Microphone Pair

    The 40AGI is an IEC 61094-compliant, WS2F ½" prepolarized sound-intensity microphone pair. The 40GI microphone pair consists of two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. Their standard mounting threads make them compatible with all the usual available makes of measurement-microphone preamplifiers. Learn More
  8. 40AQ 1/2" Random Incidence Mic
    Freq range: 3.15 Hz to 12.5Hz
    Dyn range: 16 dB(A) to 148 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AQ 1/2" Prepolarized Random Incidence Microphone

    The 40AQ is an IEC 61094 WS2P/D ½" prepolarized random-incidence microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements, optimized to measure sound correctly in random, diffuse, and reverberant sound fields. It is extremely robust and reliable and can measure sound pressure levels up to 148 dB in the range of 3.15 Hz to 16 kHz. Learn More
  9. 40AO 1/2" Pressure Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 20 dB(A) to 163 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40AO 1/2" Prepolarized Pressure Microphone

    The 40AO is an IEC 61094 WS2P ½" prepolarized pressure microphone with rear-venting. Read about the externally polarized equivalent [40AG]

    It is a high-precision condenser microphone made according to IEC 61094-4 requirements and is ideal for coupler measurements in both laboratory and production environments. It is extremely robust and reliable and can measure sound pressure levels up to 160 dB in the range of 3.15 Hz to 20 kHz.

    40AO is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit sensitivity and pressure frequency response.

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  10. 40AD 1/2" Pressure Mic, High Sensitivity
    Freq range: 3.15 Hz to 10 kHz
    Dyn range: 16 dB(A) to 148 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AD 1/2" Prepolarized Pressure Microphone, High Sensitivity

    The 40AD is an IEC 61094 WS2P ½" prepolarized pressure microphone with rear-venting. The externally polarized equivalent is G.R.A.S. 40AP

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  11. 40AZ 1/2" Free-field Mic, Low Frequency
    Freq range: 0.5 Hz to 20 kHz
    Dyn range: 14 dB(A) to 148 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AZ 1/2" Prepolarized Free-field Microphone, Low Frequency

    The 40AZ is a prepolarized free-field microphone with a large dynamic range and a wide frequency response. Its externally polarized equivalent is G.R.A.S. 40AN.

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  12. 40AM 1/2" Free-Field Mic, Wide Frequency
    Freq range: 3.15 Hz to 31.5 kHz
    Dyn range: 20 dB(A) to 163 dB
    Sensitivity: 14.5 mV/Pa

    G.R.A.S. 40AM 1/2" Prepolarized Free-Field Microphone, Wide Frequency

    The 40AM is an IEC 61094 WS2F classified ½” prepolarized free-field, wide-frequency microphone with rear-venting. The externally polarized equivalent is G.R.A.S. 40AC.

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  13. 40AR 1/2" Random Incidence Mic
    Freq range: 3.15 Hz to 12.5 kHz
    Dyn range: 14 dB(A) to 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AR 1/2" Ext. Polarized Random Incidence Microphone

    The 40AR is an IEC 61094 WS2P/D ½" externally polarized random-incidence microphone with rear-venting. The 40AR is a high-precision condenser microphone made according to IEC 61094-4 requirements. It also fulfills the requirements of ANSI S1.4. Learn More
  14. 40BF 1/4" Free-Field Mic
    Freq range: 4 Hz to 100 kHz
    Dyn range: 30 dB(A) to 172 dB
    Sensitivity: 4 mV/Pa

    G.R.A.S. 40BF 1/4" Ext. Polarized Free-field Microphone

    The 40BF is an IEC 61094 WS3F ¼” externally polarized free-field microphone with rear-venting. The prepolarized equivalent is G.R.A.S. 40BE.

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  15. 40BP-S1 1/4" Pressure Mic, Front vented
    Freq range: 4 Hz to 70 kHz
    Dyn range: 34 dB(A) to 169 dB
    Sensitivity: 1.6 mV/Pa

    G.R.A.S. 40BP-S1 1/4" Ext. Polarized Pressure Microphone, Front vented

    The 40BP-S1 is an IEC 61094 WS3P ¼" externally polarized pressure microphone with front venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements. It is a low-sensitivity microphone for sound measurements at high levels and high frequencies. Its low sensitivity makes it ideal for measuring high sound pressure levels of up to 174 dB. Its small size reduces the effects of diffraction and reflections around the microphone resulting in a frequency range extending up to 70 kHz.

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  16. 40BH 1/4" Pressure Mic, high pressure
    Freq range: 10 Hz to 20 kHz
    Dyn range: 54 dB(A) to 193 dB
    Sensitivity: 0.4 mV/Pa

    G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure

    The 40BH is an IEC 61094 WS3P ¼" externally polarized high-pressure microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements. Its very low sensitivity and wide frequency response make it ideal for measuring very high sound pressure levels of up to 194 dB. It is extremely robust and reliable and can handle acoustic impulse measurements in frequencies of up to 20 kHz. Learn More
  17. 40DP 1/8" Pressure Mic
    Freq range: 6.5 Hz to 140 kHz
    Dyn range: 40 dB(A) to 178 dB
    Sensitivity: 1 mV/Pa

    G.R.A.S. 40DP 1/8" Ext. Polarized Pressure Microphone

    The 40DP is an IEC 61094 1/8" externally polarized pressure microphone with rear-venting. Due to its tiny size, this high-precision condenser microphone can be used to measure very high frequency sounds without disturbing the sound field. Learn More
  18. 40AP-S1 1/2" Pressure Mic, High Sensitivity, Front vented
    Freq range: 3.15 Hz to 10 kHz
    Dyn range: 16 dBA to 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AP-S1 1/2" Ext. Polarized Pressure Microphone, High Sensitivity, Front vented

    The 40AP-S1 is an IEC 61094 WS2P ½" externally polarized pressure microphone with front venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements and is ideal for coupler and boundary measurements in both laboratory and production environments. It is extremely robust and reliable and can measure sound pressure levels up to 160 dB within 3.15 Hz to 20 kHz. Because of its high sensitivity, it can also measure sound pressure levels down to 16 dB(A).

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  19. 40AU 1/2" Reference Pressure Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 20 dB(A) to 164 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40AU 1/2" Ext. Polarized Reference Pressure Microphone

    The 40AU is an IEC 61094 LS2aP ½" externally polarized reference microphone that is rear-vented. It is a ½" laboratory-standard pressure microphone that is ideal for precision sound pressure measurements. It has a front cavity as specified in IEC 61094-2 and is supplied with a protective dust cap. 40AU is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit sensitivity and pressure frequency response. Learn More
  20. 40AG 1/2" Pressure Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 20 dBA to 164 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40AG 1/2" Ext. Polarized Pressure Microphone

    The 40AG is an IEC 61094 WS2P ½" externally polarized pressure microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements and is ideal for coupler measurements in both laboratory and production environments. It is extremely robust and reliable and can measure sound pressure levels up to 160 dB within 3.15 Hz to 20 kHz. Learn More

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