Notes
The following measurements are made with the new 6050 chamber that has a flat testing area that makes it easy to position the aid correctly. However, you can do the same tests with a standard 6020 chamber.
The 6500 sound chamber(s) are not anachoic, so these measurements are not exact. However, you can still get a good idea of how the directionality of the hearing aid is working
If possible, perform measurements with the sound chamber open. However, you should still get decent results even if you have to close the sound chamber because of ambient noise