1. RA0070 Test Base for Ear Simulators, Basic

    G.R.A.S. RA0070 Test Base for Ear Simulators, Basic

    Test base for G.R.A.S. artificial ears and couplers.

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  2. 45BB-8 For Test of Binaural Hearing Aid, 2-Ch CCP
    Connection: Constant Current Power (0 V/CCP)
    Channel(s): 2
    ANSI: S3.36, S3.25
    IEC: 60318-7, 60318-4
    ITU-T Rec. P.57 Type 3.3 based on ITU-T Rec. P.58

    G.R.A.S. 45BB-8 Head & Torso for Test of Binaural Hearing Aid, 2-Ch CCP

    The 45BB-8 KEMAR Head and Torso for test of binaural HA, 2-Ch CCP is an acoustic research tool with built-in ear simulators that simulates the changes that occur to soundwaves as they pass a human head and torso. KEMAR fitted with pinna simulator, ear canal extension, and IEC 60318-4 Ear Simulator resembles the acoustic impedance of the human ear. This KEMAR configuration is suitable for hearing aids using RF communication by using non-metal (POM) ear canal extensions and ear holder plates.Its corresponding LEMO equivalent is G.R.A.S. 45BB-7 KEMAR Head & Torso for Test of Binaural Hearing Aid 2-Ch LEMO.

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  3. RA0143 Ear Simulator Holder Kit for KEMAR

    G.R.A.S. RA0143 Ear Simulator Holder Kit for KEMAR

    This retro-fit kit enables mounting of the IEC 60318-4 (60711) Ear Simulator on KEMAR models earlier than 2005.

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  4. 44AB Mouth Sim ITU-T P51
    ITU-T rec.: P.51
    IEEE standards: 269, 661

    G.R.A.S. 44AB Mouth Simulator according to ITU-T Rec. P51

    G.R.A.S. 44AB Mouth Simulator is a sound source which simulates the sound field around the human mouth at close quarters and complies with the Standards IEEE 269, 661 and ITU-T Rec. P51.

    G.R.A.S. 44AB is for testing telephone mouthpieces as well as other microphones similarly used in communication networks.

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  5. 44AA Mouth Sim ITU-T P51, power amp
    ITU-T rec.: P.51
    Special feature: Built-in power amplifier

    G.R.A.S. 44AA Mouth Simulator according to ITU-T Rec. P51 with built-in power amplifier

    G.R.A.S. 44AA Mouth Simulator  is a sound source which simulates the sound field around the human mouth at close quarters and complies with the Standards IEEE 269, 661 and ITU-T Rec. P51.

    G.R.A.S. 44AA is for testing telephone mouthpieces as well as other microphones similarly used in communication networks.

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  6. 43BB Low-noise Ear Simulator System
    Volume: 1260 mm³ @ 500 Hz
    Dyn range: 10.5 dB(A) to 113 dB
    Based on IEC 60318-4

    G.R.A.S. 43BB Low-noise Ear Simulator System

    The 43BB Low-noise Ear Simulator System is for acoustic low noise measurements on insert headphones, especially headphones with active noise cancellation. It is based on the IEC 60318-4 ear simulator standard. Learn More
  7. 45BB-7 For Test of Binaural Hearing Aid, 2-Ch LEMO
    Connection: Traditional Power Supply (200 V/LEMO)
    Channel(s): 2
    ANSI: S3.36, S3.25
    IEC: 60318-7, 60318-4
    ITU-T Rec. P.57 Type 3.3 based on ITU-T Rec. P.58

    G.R.A.S. 45BB-7 Head & Torso for Test of Binaural Hearing Aid, 2-Ch LEMO

    The 45BB-7 KEMAR Head and Torso for test of binaural HA, 2-Ch LEMO is an acoustic research tool with built-in ear simulators that simulates the changes that occur to soundwaves as they pass a human head and torso. KEMAR fitted with pinna simulator, ear canal extension, and IEC 60318-4 Ear Simulator resembles the acoustic impedance of the human ear. This KEMAR configuration is suitable for hearing aids using RF communication by using non-metal (POM) ear canal extensions and ear holder plates.Its corresponding CCP equivalent is G.R.A.S. 45BB-8 KEMAR Head & Torso for Test of Binaural Hearing Aid, 2-Ch CCP.

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  8. 43AH CCP Ear Sim Prod Test ITU-T P57 3.2 LL
    Connection: 0 V/CCP
    Volume: Complex
    Dyn range: 25 dB(A) to 150 dB
    ANSI: S3.7
    IEC: 60318-1 & -2

    G.R.A.S. 43AH CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 Low-leak

    This G.R.A.S. 43AH ear simulator consists of the ITU-T Rec. P.57 Type 2 Ear Simulator and Type 3.2 Simplified Low-leak Pinna Simulator and is designed for making ITU-T standardized tests of telephone handsets, receivers and receiver/loudspeaker-modules on the production line.

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  9. 43AG Ear & Cheek Simulator
    Dyn range:
    25 dB(A) to 164 dB or
    10.5 dB(A) to 113 dB (low-noise version)
    ANSI: S3.7
    IEC: 60318-4

    G.R.A.S. 43AG Ear & Cheek Simulator

    The G.R.A.S. 43AG Ear and Cheek Simulator represents the section of a head important for realistic reproduction of the acoustic properties of the ear of an average human head. It allows the use of an ITU-T type 3.3 pinna or an Anthropometric Pinna, either with an IEC 60318-4 Ear Simulator or a Low-noise Ear Simulator system.

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  10. 43AD-S1 CCP Ear Sim Kit ITU-T Rec. P57 1
    Connection: 0 V/CCP
    Volume: Complex
    Dyn range: 25 dB(A) to 150 dB
    ANSI: S3.7
    IEC: 60318-1

    G.R.A.S. 43AD-S1 CCP Ear Simulator Kit According to ITU-T Rec. P57 Type 1

    The G.R.A.S. 43AD-S1 Artificial Ear is a complete assembly for acoustical measurements on acoustical transmitters and loudspeakers. It can be integrated with a telephone test head or permanently installed on a production test line.

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  11. KB0111 Ear-mould simulator

    G.R.A.S. KB0111 Ear-mould simulator

    Ear-mould simulator for connecting a GR0917 (coupler holder) to a BTE hearing aid via 3 mm plastic tubing.

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  12. RA0038 1/2'' 2cc Coupler IEC 60318-5
    Volume: 2 cc
    ANSI: S3.7
    IEC: 60318-5
    Special feature: For 1/2" pressure microphones

    G.R.A.S. RA0038 1/2'' 2cc Coupler according to IEC 60318-5

    The G.R.A.S. RA0038 Coupler is a standard 2 cm³ Coupler according to IEC 126 and ANSI S3.7-1973. It uses a ½" microphone (preferably the G.R.A.S. 40AG) with a suitable preamplifier (e.g. G.R.A.S. 26AC which is a ¼" preamplifier but is supplied with an adapter for ½" microphones).

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  13. RA0045-S1 Prepol Ear Sim IEC 60318-4 (60711)
    Volume: 1260 mm³ @ 500 Hz
    Dyn range: 25 dB(A) to 150 dB
    IEC: 60318-4

    G.R.A.S. RA0045-S1 Prepolarized Ear Simulator According to IEC 60318-4 (60711)

    G.R.A.S. RA0045-S1 is an ear simulator with an acoustic input impedance closely resembling that of an average human ear. The RA0045 includes a 40AO 1/2" prepolarized pressure microphon and each RA0045 is individually calibrated with this specific microphone.

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  14. 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 WS1P 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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  15. 43AE-S1 CCP Ear Sim Kit ITU-T Rec. P57 3.2
    Connection: 0 V/CCP
    Volume: Complex
    Dyn range: 25 dB(A) to 150 dB
    ANSI: S3.7

    G.R.A.S. 43AE-S1 CCP Ear Simulator Kit According to ITU-T Rec. P57 Type 3.2

    The G.R.A.S. 43AE-S1 Ear Simulator according to ITU-T Rec. P57 Type 3.2, Prepolarized is for acoustically testing supra-aural earphones, telephone handsets and loudspeakers, and complies with the international requirements: ITU-T Recommendation P.57 (08/96) “Serie P: Telephone Transmission quality. Objective measuring apparatus: Artificial ears”. Learn More
  16. 43AA Ear Sim Kit IEC 60318-1 & -2
    Connection: 200 V/LEMO
    Volume: Complex
    Dyn range: 25 dB(A) to 164 dB
    ANSI: S3.7
    IEC rec.: 60318-1 & -2

    G.R.A.S. 43AA Ear Simulator Kit According to IEC 60318-1 & -2

    The G.R.A.S. 43AA Ear Simulator Kit is a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, objective measuring apparatus: artificial ears.

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  17. 43AB 1/2'' 2cc Coupler Kit IEC 60318-5
    Connection: 200 V/LEMO
    Volume: 2 cc
    Dyn range: 25 dB(A) to 164 dB
    ANSI: S3.7 Type 2
    IEC: 60318-5

    G.R.A.S. 43AB 1/2'' 2cc Coupler Kit According to IEC 60318-5

    The G.R.A.S. 43AB Artificial Ear is a complete test-jig for acoustical measurements on hearing aids.

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  18. 43AI CCP Ear Sim Prod Test ITU-T P57 3.2 HL
    Connection: 0 V/CCP
    Volume: Complex
    Dyn range: 25 dB(A) to 150 dB
    ANSI: S3.7

    G.R.A.S. 43AI CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 High-leak

    The G.R.A.S. 43AI ear simulator consists of the ITU-T Rec. P.57 Type 2 Ear Simulator and Type 3.2 Simplified High-leak Pinna Simulator and is designed for making ITU-T standardized tests of telephone handsets, receivers and receiver/loudspeaker-modules on the production line.

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  19. 43AD Ear Sim Kit ITU-T P57 1
    Connection: 200 V/LEMO
    Volume: Complex
    Dyn range: 25 dB(A) to 164 dB
    ANSI S3.7
    IEC: 60318-1

    G.R.A.S. 43AD Ear Simulator Kit According to ITU-T Rec. P57 Type 1

    The G.R.A.S. 43AD Artificial Ear is a complete assembly for acoustical measurements on acoustical transmitters and loudspeakers. It can be integrated with a telephone test head or permanently installed on a production test line.

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  20. 43AE Ear Sim Kit ITU-T P57 3.2
    Connection: 200 V/LEMO
    Volume: Complex
    Dyn range: 26 dB(A) to 164 dB
    ANSI: S3.7

    G.R.A.S. 43AE Ear Simulator Kit According to ITU-T Rec. P57 Type 3.2

    The G.R.A.S. 43AE Ear Simulator Kit according to ITU-T Rec. P57 Type 3.2 is for acoustically testing supra-aural earphones, telephone handsets and loudspeakers, and complies with the international requirements:
    ITU-T Recommendation P.57 (08/96) “Serie P: Telephone Transmission quality. Objective measuring apparatus: Artificial ears”.

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