RA0566 Exterior Ear Canal GR0408 and Union Nut GR0409 kit for 711-style ear simulators
The GRAS RA0566 kit includes the GR0408 external ear canal extension, which is designed to attach to a 711-style ear simulator using the included GR0409 union nut.
Technology
The RA0566 kit includes both the ear canal extension (GR0408) and the union nut (GR0409), designed for use with 711-style ear simulators.
Compatible GRAS ear simulators include:
- RA0045
- RA0045-Sx
- RA0401
- RA0402
- RA0403
- RA0404
- RA0234 (low-noise ear simulator from the 43BB product family)
The RA0566 kit facilitates mounting hearing devices onto 711-style ear simulators for testing. It is also useful for calibrating these simulators when using a pistonphone or sound calibrator.
Typically, RA0566 components are included with every 711-style ear simulator delivered by GRAS. Therefore, purchasing them separately is only necessary if the original parts are lost or if spare parts are needed.
The image below illustrates how to install the GR0408 external ear canal extension onto a 711-style ear simulator, such as the GRAS RA0045, using the GR0409 union nut.
