Artificial ears, ear & mouth simulators

GRAS RA0075 6cc Coupler

Volume: 6 cc
ANSI: S3.7
IEC: 60318-3

GRAS RA0075 6cc Coupler

The GRAS RA0075 is a 6cc coupler for testing earphones according to ANSI 3.7 - 1995 and IEC 60318-3...

GRAS RA0076 Adapter for NBS9A Coupler
Thread adapter

GRAS RA0076 Adapter for NBS9A Coupler

The GRAS RA0076 is a thread adapter to use when mounting a 1" or a 1/2" microphone in the RA0075 NBS 9-A Coupler. In the case of a 1/2" microphone the RA0077 1/2" - 1" Adapter for Coupler is also needed...

GRAS RA0113 1'' 2cc Coupler according to IEC 60318-5

Volume: 2 cc
ANSI: S3.7
IEC: 60318-5
Special feature: For 1" pressure microphones

GRAS RA0113 1'' 2cc Coupler according to IEC 60318-5

The GRAS RA0113 is a 2cc IEC 60126 coupler which uses a 1" microphone, e.g. the GRAS 40EN.The microphone, without its protection grid, screws into the base of the RA0113...

GRAS RA0252 1/4” 0.4cc High Frequency Coupler

Volume: 0.4cc
IEC: TS 62886 (IEC 60118-0)
Use: For hearing aid test up to 16 kHz

GRAS RA0252 1/4” 0.4cc High Frequency Coupler

GRAS RA0252  is a1/4” 0.4cc High freq Coupler for testing of hearing aids at frequencies up to 16 kHz...

GRAS RA0401 Externally Polarized High Resolution Ear Simulator

100 Hz to 10 kHz according to IEC 60318-4
10 to 20 kHz:  ± 2.2 dB test tolerance
Dampened resonance, with peak @ 13.5 kHz
Volume 1260 mm³ @ 500 Hz according to IEC 60318-4
Sensitivity 12.5 mV/Pa
Based on ITU-T Rec P.57

GRAS RA0401 Externally Polarized High Resolution Ear Simulator

The GRAS RA0401 is a high resolution ear simulator with an acoustic input impedance closely resembling that of an average human ear.  It includes a 40AG 1/2" pressure microphone and is individually calibrated with this specific microphone. It features a special dampening system that extends its..

GRAS RA0402 Prepolarized High Resolution Ear Simulator

100 Hz to 10 kHz according to IEC 60318-4
10 to 20 kHz:  ± 2.2 dB test tolerance
Dampened resonance, with peak @ 13.5 kHz
Volume 1260 mm³ @ 500 Hz according to IEC 60318-4
Sensitivity 12.5 mV/Pa
Based on ITU-T Rec P.57

GRAS RA0402 Prepolarized High Resolution Ear Simulator

The GRAS RA0402 is a high resolution ear simulator with an acoustic input impedance closely resembling that of an average human ear.  It includes a 40AO 1/2" pressure microphone and is individually calibrated with this specific microphone. It features a special dampening system that extends its..