9000hz +5db 2.5q
Recommend to anyone to try this filter. It is a small lift in the 9k region. Based on Listener’s measurements to push it to match the JM DF. Of Couse mileage may vary based on unit variation, but improves the ‘veil’ significantly, just based on my testing right now.
When headphones IEMs have this dip, I do not consider them to have “good” treble. This is the type of ‘dip’ I am referring to when I mention Sennheiser.
I don’t think it’s being imprudent to point this out at all.
The problem I have with the argument involving HRTF is that not even one of the examples showing averages of population HRTFs in this Understanding the Headphones.com IEM Measurements article show any kind of dip (or would it be rise?) at 9-10k. And once you start playing with filling in that section with EQ, I think you will quickly realize just how important it actually is for perceived clarity, regardless of overall wide-band balance between bass, mids, treble. I also think, likely, regardless of HRTF.
Also maybe a side question… but do we actually know how strongly actual HRTF affects perceived expectation of sound with IEMs? From how it’s told, it seems mostly theoretical, but likely. BUT we do not know how strong the influence is or how much ‘leeway’ there is in perceived response vs actual, correct?
Apologizes all around, but I just wanted to make this final point. This will be my last post on it, unless someone wants to discuss it in good faith further, I won’t belabor my point any further.