You don't have to measure your cans yourself. Use published response curves and calibrate to Harman as best as you can. That is a good starting place. Listen to it like that with a variety of music and take note of what you like and don't like. Make a small correction- just one at a time, not a bunch all at once. Listen to it like that for a while and take note again. Rinse and repeat until you are happy. Odds are, your preference isn't much more than a few dB off of Harman. And the areas that you will probably be tweaking are between 2kHz and 5kHz and the bass range. As you get experience EQing, you learn what sounds the Hz and kHz numbers refer to. That makes it easier to make adjustments.
There are two Harman curves. I'd suggest using the newer one with more bass.
EQ only does more harm than good if you don't know how to use it. I think it's a very good idea to experiment and try to puzzle it out. That is how to learn. You don't get anywhere if you make excuses like "EQ can't fix everything." and "You can't test your cans yourself." Just get a good equalizer and try to learn how to use it well. It is the best way to improve the sound of just about any system. Response is the lion's share of fidelity nowadays.
- So how can I get the newer Harman curve, load it to EQ APO/Peace and change the parametric EQ and see how the headphones response curve changes in real-time?
- I believe I need to overlay the Harman curve on a graph window, then initially I will my headphones EQ as a flat line and then I need to play with the EQ values to get it as close as possible to Harman's curve?
I found the Innerfidelity curve for my ATH-A900X (https://github.com/jaakkopasanen/Au...af-serious/Audio-Technica ATH-A900X/README.md), Thanks to @jaakkopasanen
But not for my AudioEngine 5+ speakers.
I guess that I need to import the parametric EQ to Equalizer APO, but then try to play with the EQ to get to Harman's curve but I'm not sure how to load that curve and try to match them.