Hello there! :D I’m looking to build my first ever CIEM. I have everything under control except how to choose and combine drivers. I don’t know the science behind how to combine and how to calculate or what the professionals do - but would like to learn if anyone would be kind enough to walk me...

In looking to get ear molds done for the first time, I contacted a recommended Audiologist doctor. In addition to making AMAZING ear molds, he taught me quite a bit about the importance of getting it done RIGHT. He said that there are chances that audiologists produce poor molds which lead...