Measurement Microphone Adaptor Adapter to Test InEar Headphones

To measure the frequency response of in-ear headphones, you need a precise measuring microphone (in my case a TM1 from Audix), a sound card, software (e.g. REW or Opensoundmeter) and an adapter to position the in-ears correctly. This 3D printed part is the adapter so that the in-ear headphones can be placed at a constant distance from the microphone.

I decided to make the adapter myself using the 3D printing process.

After printing, an O-ring with an inner diameter of 4 mm and a thickness of 1.8 mm can be inserted into the front of the 3D printed part.

CAD Model

https://cad.onshape.com/documents/25963954c8bfc6553f8ea8e0/w/5c6493aeb2338abb1d91573b/e/2ea478b8f18ab6ac958f032e?renderMode=0&uiState=677ecf5e5f86724f8287f3fe

Alternatively, something like this would be an inexpensive solution, but I have not tested it:

https://de.aliexpress.com/item/1005008147331850.html