Well I have to agree an explanation of all of the questions on paper wouldve been much easier and less time consuming for everybody. But at least we have some answers now and Im sorry for letting you think I was insulting you. I do admire the fact that you took time for it. I do have to say though that everybody would understand, including you, that watching a 2 hours movie -instead of some minutes a day on the head-fi forum here- takes lots more time than simply answering the questions. Even if they were my questions, it still is a lot of time. I do like the effort you all took for it.
no offense.
At some time in the video, frequency (or was it phase, I dont remember) was being demonstrated to change when the IEM was sealed by a finger or not. But I think everybody here knows how much a seal on an IEM can do. Also, an IEM has a sound signature based on how it should sound. He claims IEMs can never sound perfect because they are not made to do that, because of the pressure built up. That is just silly I think since you can alter the frequency response of the IEM however you want it to sound. What the ADEL seems to do is let a lot of pressure go when the built up is too much. Well why not build a tiny little hole in the IEM itself, without it having a diaphragm? Vented IEMs exist for a long time and again: they can sound however you want them to, because you can EQ them to compensate for the bass lost. Which brings us to the next question, which might already be answered in the video (not watched it completely): why not EQ an IEM to sound less bassy and thus having less bass energy and pneumatic pressure?
To be fair I think you have even sooner hearing loss with the ADEL and here is why I think so: lower frequencies turn on the acoustic reflex which causes to let less dB reach the inner ear. When you take away those bass frequencies, the reflex is much later triggered although the treble is of the same energy! And: mids and highs cause sooner hearing loss. But this is also just a claim and a thought