Accessories

GRAS Sound & Vibration offers a wide range of standard accessories in the form of cables, adapters, windscreens and tripods for use in measuring set-ups. These can be broadly split up under accessories for microphones, for preamplifiers, for outdoor microphones, for pistonphonespistonphones and pinna simulators and accessories for ear simulators. Some are included with certain products, some are available as extras. All can be ordered individually. The brief descriptions given here as well as those on downloadable accessories sheet will help you to select what you need for your particular set-up. At all events, feel free to contact your GRAS partner if you need advice or further information.

GRAS Sound & Vibration also offers a wide range of special products and customised solutions. Our experience within the field of acoustics and vibration, combined with our short development time, enable us to provide innovative solutions to complex measurement problems in close co-operation with the customer. For a technical discussion of your measurement requirements, please contact your local representative or contact GRAS Sound & Vibration directly in Denmark.

GRAS RA0052 Test Jig

GRAS RA0052 Test Jig

For use with GRAS couplers and artificial ears. It has an adjustable spring-loaded arm to exert a variable force on the test object...

GRAS RA0058 1/2'' to 1'' Microphone Adapter

Length: 17.00 mm
Diameter: 23.77 mm
Material Stainless steel

GRAS RA0058 1/2'' to 1'' Microphone Adapter

Dimension adapter which increases the diameter of a 1/2" microphone to 1". The adapter is relevant for use with GRAS 45CA Hearing-protector test fixture or in other situations where a 1/2" microphone is to be mounted in a 1" inner diameter hole/cylinder...

GRAS RA0060 Calibration Coupler for 1/2” Nosecone

GRAS RA0060 Calibration Coupler for 1/2” Nosecone

For use when calibrating a microphone fitted with a 1/2” nosecone RA0020 using a GRAS pistonphone like 42AA...

GRAS RA0062 20 pF Preamplifier-input Adapter for 1/2" preamplifiers

Length: 47.50 mm (excl. connector)
Diameter: 12.70 mm
Material: stainless steel

GRAS RA0062 20 pF Preamplifier-input Adapter for 1/2" preamplifiers

The RA0062 is a 20 pF input adapter for 1/2" preamplifiers. One end screws on to a 1/2" preamplifier and the other end has a BNC input connector. This enables connecting a signal generator to the input of the preamplifier. Short circuiting the BNC input results only in loading the preampli..

GRAS RA0062-S1 50 pF Preamplifier-input Adapter for 1/2" preamplifiers

Length: 47.50 mm (excl. connector)
Diameter: 12.70 mm
Material: stainless steel

GRAS RA0062-S1 50 pF Preamplifier-input Adapter for 1/2" preamplifiers

The RA0062-S1 is a 50 pF input adapter for 1/2" preamplifiers. One end screws on to a 1/2" preamplifier and the other end has a BNC input connector. This enables connecting a signal generator to the input of the preamplifier. Short circuiting the BNC input results only in loading the pream..

GRAS RA0063 Adapter for 1/8" microphone and 1/4" preamplifier

Length: 17 mm
Inner threading for preamp.: 5.70-60 UNS-2
Outer threading for mic.: M3
Material: stainless steel

GRAS RA0063 Adapter for 1/8" microphone and 1/4" preamplifier

The RA0063 is an adapter for using a 1/8" microphone with a 1/4" preamplifier. It can be used with any standard 1/8" microphone and 1/4" preamplifier such as the GRAS 26AC...

GRAS RA0067 Transmitter Adapter for 1/2" microphones

Length (excl. connector): 47.50 mmDiam.: 12.70 mm

GRAS RA0067 Transmitter Adapter for 1/2" microphones

The GRAS RA0067 enables a prepolarized 1/2" microphone (typically a GRAS 40AD) to be used as a high-impedance sound source...

GRAS RA0069 Microphone adapter for pistonphones

Material: Black POM

GRAS RA0069 Microphone adapter for pistonphones

1/2" Adapter for 1/8" microphones when calibrating using GRAS pistonphones and Sound Calibrator...

GRAS RA0070 Test Base for Ear Simulators, Basic

GRAS RA0070 Test Base for Ear Simulators, Basic

Test base for GRAS artificial ears and couplers...

GRAS RA0072 Octopus coupler

GRAS RA0072 Octopus coupler

Octopus couplers for calibrating up to eight 1/2" microphones simultaneously...

GRAS RA0073 Adapter for 1" microphone and 1/2" preamplifier

Length: 63 mm
The thick end is provided with:
Inner threading for preamp.: 11.70-60 UNS-2
Outer threading for mic.: 23.11-60 UNS-2
Material: stainless steel

GRAS RA0073 Adapter for 1" microphone and 1/2" preamplifier

The RA0073 is an adapter for using a 1˝ microphone with a ½˝ preamplifier. The influence of the RA0073 on the acoustic field is minimal...

GRAS RA0077 NBS 9-A Coupler adapter for 1/2” microphone

Length: 18.95 mm
Diameter: 23.77 mm
Material: Stainless steel

GRAS RA0077 NBS 9-A Coupler adapter for 1/2” microphone

The GRAS RA0077 adapts a 1/2” microphone (remove grid) into a 1" microphone (without grid). Designed for NBS 9A / IEC 60313 Coupler GRAS RA0075 and Artificial Ear with NBS Coupler GRAS 43AF...