Externally polarized cartridges (200 V)

Externally polarized cartridges (200 V)

Externally-polarized microphones are used with standard preamplifiers, which have a 7-pin LEMO connector. The preamplifier should be connected to a power module or an analyzer input which can supply the preamplifier with power as well as 200 V polarization.
  1. 40EN 1" Pressure Mic
    Freq range: 2.6 Hz to 8 kHz
    Dyn range: 9.6 dBA to 146 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40EN 1" Ext. Polarized Pressure Microphone

    The 40EN is an IEC 61094 WS1F 1" externally polarized pressure microphone. It is a 1" pressure microphone that is ideal for measurements in couplers used for testing earphones. When flush-mounted, it can measure sound pressures at boundaries. It is highly suited as a laboratory-standard microphone.

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  2. 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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  3. 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
  4. 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
  5. 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 1/4" 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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  6. 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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  7. 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
  8. 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
  9. 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
  10. 40AP 1/2" Pressure Mic, High Sensitivity
    Freq range: 3.15 Hz to 10 kHz
    Dyn range: 16 dBA to 149 dB
    Sensitivity: 50 mV/Pa

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

    The 40AP 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 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). If needed, the 40AP can also be used as a random-incidence microphone. Learn More
  11. 40AN 1/2" Free-Field Mic, low frequency
    Freq range: 0.5 Hz to 20 kHz
    Dyn range: 14 dBA to 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AN 1/2" Ext. Polarized Free-field Microphone, Low Frequency

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

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  12. 40AC 1/2" Free-Field Mic, Wide Frequency
    Freq range: 3.15 Hz to 40 kHz
    Dyn range: 20 dBA to 164 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40AC 1/2" Ext. Polarized Free-field Microphone, Wide Frequency

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

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  13. 40AF 1/2" Free-Field Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 14 dBA to 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40AF 1/2" Ext. Polarized Free-field Microphone

    The G.R.A.S. 40AF is a 1/2" Externally Polarized free-field microphone for measuring medium sound pressure levels at medium frequencies. The equivalent prepolarized 0 V type is G.R.A.S. 40AE.

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  14. 40EU 1" Reference Pressure Mic
    Freq range: 2.6 Hz to 8 kHz
    Dyn range: 9.6 dBA to 146 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40EU 1" Ext. Polarized Reference Pressure Microphone

    The 40EU is an IEC 61094 LS1P 1” externally polarized pressure microphone that is rear-vented. It is a 1” pressure microphone that is ideal for measurements in couplers used for testing earphones. When flush-mounted, it can measure sound pressures at boundaries. It is highly suited as a laboratory-standard microphone. Learn More
  15. 40BP 1/4" Pressure Mic
    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 1/4" Ext. Polarized Pressure Microphone

    The 40BP is an IEC 61094 WS3P 1/4" externally polarized pressure microphone with rear-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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