Special microphones

Special microphones

Special microphones are often required for applications where there are particular requirements surrounding the methods of measurements and configurations.
  1. 40PH Free-Field Array Mic
    Freq range: 10 Hz to 50 kHz
    Dyn range: 32 dB(A) to135 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40PH CCP Free-field Array Microphone

    The G.R.A.S. 40PH Array Microphone is a low-cost microphone for general purpose measurements in arrays and matrices.

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  2. 40PL Free-Field Array Mic, High Pressure
    Freq range: 10 Hz to 20 kHz
    Dyn range: 32 dB(A) to 150 dB
    Sensitivity: 10 mV/Pa

    G.R.A.S. 40PL CCP Free-field Array Microphone, High Pressure

    The G.R.A.S. 40PL Array Microphone is a low-cost microphone for general purpose measurements in arrays and matrices. It has a wide useful frequency range reaching up to 20 kHz and a large dynamic range topping at around 150 dB.

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  3. 40AK 1/2" Intensity Mic Kit
    Freq response: IEC 60651 Type 0 IEC
    Dyn range: 20 dB(A) to 157 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Kit

    The 40AK is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone set. The microphones in the set are two 40AI microphones - two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. This microphone pair has a free-field frequency response that complies with IEC 61043 1993 Class 1 and IEC 60651 Type 1 in the range from 20 Hz to 10 kHz. Learn More
  4. 40GK 1/2" Intensity Mic Kit
    Freq response: IEC 60651 Type 0 IEC
    Dyn range: 27 dB(A) to 163 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40GK 1/2" Prepolarized Intensity Microphone Kit

    The 40GK is an IEC 61094-compliant, WS2F ½" prepolarized sound-intensity microphone set. The microphones in the set are two 40GI microphones - two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. This microphone pair has a free-field frequency response that complies with IEC 61043 1993 Class 1 and IEC 60651 Type 1 in the range from 20 Hz to 10 kHz. Learn More
  5. 40BI 1/4" Intensity Mic Kit
    Freq response: IEC 60651 Type 0 IEC
    Dyn range: 35 dB(A) to 172 dB
    Sensitivity: 4 mV/Pa

    G.R.A.S. 40BI 1/4" Ext. Polarized Intensity Microphone Kit

    The 40BI is an IEC 61094-compliant, WS3F ¼" externally polarized sound-intensity microphone pair. The 40BI 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
  6. 40AI 1/2" Intensity Mic Pair
    Freq response: IEC 60651 Type 0 IEC
    Dyn range: 20 dB(A) to 157 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair

    The 40AI is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone pair. The 40AI 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
  7. 50GI CCP Intensity Probe
    Freq range: Ref. IEC 61043 Class 1
    Dyn range: 27 dB(A) to 146
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 50GI CCP Intensity Probe

    G.R.A.S. 50GI is a sound intensity probe for direct connection to signal analyzers or data acqusition devices with IEPE inputs. The probe includes a pair of phase-matched prepolarized precision microphones which meet the requirements in IEC standard 61043 for a class-1 intensity probe. The small rugged 1/4" CCP preamplifiers ensure minimum disturbances to the sound field for accurate measurements in the full frequency range.

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  8. 50VI-3 Wide-band intensity probe
    Freq range: IEC 61043
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50VI-3 Wide-band intensity probe

    The G.R.A.S. Wide-band Intensity Probe Type 50VI-3 is a flexible and adjustable four-channel sound-intensity probe.

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  9. 50AI-B 1/2"  Intensity Probe
    Freq range: Ref. IEC 61043 Class 1
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50AI-B 1/2" LEMO Intensity Probe

    The G.R.A.S. 50AI-B Sound-intensity Probe builds on more than 20 years of theory and practical experience in sound-intensity measurements. It is adjustable, durable and fully complies with the requirements in IEC 61043, Electroacoustics- Instruments for the Measurement of Sound Intensity- Measurements with Pairs of Pressure Sensing Microphones, 1993 for Class 1 Sound-intensity probes.

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  10. 50VX Intensity probe
    Freq range: IEC 61043
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50VX Intensity Probe Type

    The G.R.A.S. X-Y-Z Intensity Probe Type 50VX is a two-channel intensity probe for serially measuring a three-dimensional sound intensity vector in a stationary sound field. It includes a pair of phase-matched intensity microphones Type 40AI mounted on a pair of Preamplifiers Type 26AA with adapters and spacers. The whole assembly is mounted on a swivel head that can be swivelled in three mutually-perpendicular directions by means of a pair of slider buttons on the probe handle. The probe handle has inputs for 2 preamplifiers and a pair of LEDs for indicating two states as well as a pair of push buttons for interactive use with a remote-control system. For example, the output socket for remote control can be connected to the RS232 interface of a computer which controls the process of data acquisition. Learn More
  11. 50VI-1 Vector intensity probe
    Freq range: IEC 61043 Class 1
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50VI-1 Vector intensity probe

    The G.R.A.S. 50VI-1 Vector Intensity Probe is a flexible and adjustable, two or three-dimensional sound-intensity probe. The probe handle has marked inputs for 3 pairs of preamplifiers (a pair for each of the mutually-perpendicular directions) and a 24-pin LEMO output socket at its base for connecting it to a suitable Power Module (e.g. Type 12AC) or Power Modules (via cable adapter).

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    Freq range: Ref. IEC 61043 Class 1
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50AI-D 1/2" LEMO Intensity Probe

    The G.R.A.S. 50AI-D Sound-intensity Probe builds on more than 20 years of theory and practical experience in sound-intensity measurements. It is adjustable, durable and fully complies with the requirements in IEC 61043, Electroacoustics- Instruments for the Measurement of Sound Intensity- Measurements with Pairs of Pressure Sensing Microphones, 1993 for Class 1 Sound-intensity probes.

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  13. 50GI-R Intensity Probe with Remote Control
    Freq range: IEC 61043 Class 1
    Dyn range:
    Sensitivity:

    G.R.A.S. 50GI-R CCP Intensity Probe with Remote Control

    The 50GI-R is a sound intensity probe for direct connection to signal analyzers or data acquisition devices with IEPE inputs. The probe includes a pair of phase-matched prepolarized precision microphones which meet the requirements in IEC standard 61043 for a class-1 intensity probe. The small rugged ¼" CCP preamplifiers ensure minimum disturbances to the sound field for accurate measurements in the full frequency range.

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  14. /
    Freq range: Ref. IEC 61043 Class 1
    Dyn range: 25 dB(A) to 152 dB
    Sensitivity: 25 mV/Pa

    G.R.A.S. 50AI-C 1/2" LEMO Intensity Probe

    The G.R.A.S. 50AI-C Sound-intensity Probe builds on more than 20 years of theory and practical experience in sound-intensity measurements. It is adjustable, durable and fully complies with the requirements in IEC 61043, Electroacoustics- Instruments for the Measurement of Sound Intensity- Measurements with Pairs of Pressure Sensing Microphones, 1993 for Class 1 Sound-intensity probes.

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  15. 50GI-RP CCP Rugged Intensity Probe
    Freq range: IEC 61043 Class 1
    Dyn range:
    Sensitivity:

    G.R.A.S 50GI-RP CCP Rugged Intensity Probe

    Type 50GI-RP is a sound intensity probe for direct connection to signal analyzers or data acqusition devices with IEPE inputs. The probe includes a pair of phase-matched prepolarized precision microphones which meet the requirements in IEC standard 61043 for a class-1 intensity probe..

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  16. 50GI-P CCP Rugged Intensity Probe
    Freq range: IEC 61043
    Dyn range:
    Sensitivity:

    G.R.A.S 50GI-P CCP Rugged Intensity Probe

    Type 50GI-P is a sound intensity probe for direct connection to signal analyzers or data acqusition devices with IEPE inputs. The probe includes a pair of phase-matched prepolarized precision microphones which meet the requirements in IEC standard 61043 for a class-1 intensity probe..

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  17. 40HF 1" Lownoise Mic System
    Freq range: 10 Hz to 10 kHz
    Dyn range: -2 dB(A) to 110 dB
    Sensitivity: 1.1 V/Pa

    G.R.A.S. 40HF 1'' Lownoise Microphone System

    The G.R.A.S. 1-inch Lownoise Microphone System Type 40HF can measure sound pressure levels well below the threshold of human hearing; and is amply suitable for use in sound-power measurements on even very quiet products. Its very wide dynamic range permits measurements down to below – 10 dB re. 20 μPa (in 1/3-octave bands) from 20 Hz to 10 kHz.

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  18. 40HH 1/2'' Lownoise Mic System
    Freq range: 10 Hz to 16 kHz
    Dyn range: 6.5 dB(A) to 113 dB
    Sensitivity: 800 mV/Pa

    G.R.A.S. 40HH 1/2'' Lownoise Microphone System

    The G.R.A.S. 40HH ½″ Lownoise Microphone System can measure sound pressure levels well below the threshold of human hearing; and is amply suitable for use in sound-power measurements on even very quiet products. Its very wide dynamic range permits measurements down to below – 2 dB re. 20 μPa (in ⅓-octave bands) from 20 Hz to 20 kHz.

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  19. 40HL 1/2" Lownoise Mic System
    Freq range: 10 Hz to 16 kHz
    Dyn range: 6.5 dB(A) to 110 dB
    Sensitivity: 850 mV/Pa

    G.R.A.S. 40HL 1/2'' LEMO Lownoise Microphone System

    The G.R.A.S. 1/2" Lownoise Microphone SystemType 40HL measures sound pressure levels well below the threshold of human hearing. It is thus generally suitable for sound-power measurements on even very quiet products. Its very wide dynamic range permits measurements down to below – 2 dB re. 20 μPa (in ⅓-octave bands) from 20 Hz to 20 kHz.

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  20. 40HT 1/2'' Lownoise Mic System
    Freq range: 10 Hz to 16 kHz
    Dyn range: 6.5 dB(A) to 113 dB
    Sensitivity: 800 mV/Pa

    G.R.A.S. 40HT 1/2'' Lownoise Microphone System

    The G.R.A.S. 40HT ½-inch Lownoise Microphone System has specifications similar to G.R.A.S. 40HH but can also be used in confined spaces.

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