Alright, I get your thoughts. The bass bump though is not due to the head. Take a look at the green curve from this diagram:
(Taken from the Innerfidelity article you've linked)
The green curve was the baseline for their research. As you can see the bass bump is not present there.
I absolutely recommend AES. In their library you can find all those papers by Olive, Welti, Toole, Temme, Lorho and many others and get all the information first hand. E.g. those papers we are talking about right now:
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http://www.aes.org/e-lib/browse.cfm?elib=17042
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http://www.aes.org/e-lib/browse.cfm?elib=17940
And their newest paper that includes a new 2017 Harman curved derived for IEMs:
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http://www.aes.org/e-lib/browse.cfm?elib=18369
An AES membership is not free though...
Soon I'd like to publish a German article on my website in which I like to address target curves and stuff (viel auf Deutsch gibt's bisher ja noch nicht zu dem Thema).
If you have any questions don't be shy to ask
@crinacle's thread recently became the thread-to-be for any of those questions. You also can send me PMs, if you prefer to read some German words.
Are you a member of hifi-forum.de?
Well, a common listening level for studios is at 83 dB SPL average. We have to assume that this is about the SPL the music is intended to be reproduced at. If there has been done any loudness compensation yet, it likely has been done in regard to this level. So if you like to listen at those levels there isn't any need to compensate. But if not, aiming for a loudness compensation might not be a bad idea
Absolutely
And I do have my own target that we use internally for our reviews.
May I point you to my comment at Innerfidelity? It does include my curve and some other thoughts as well:
https://www.innerfidelity.com/comment/513668#comment-513668