For EQ purposes I wouldn't really use a flat plate - you're better off using Oratory's EQ based on GRAS measurements, even if of course it's not a measurement of your individual unit (so unit to unit variation remains as an innaccuracy). Or if you don't like the Harman Curve then use Oratory's measurements and EQ them to any target of your choice. And you can also experiment with changing the customisation filters that Oratory includes in his EQ's, so you can tune the EQ from the Harman EQ starting point.
Noted I've been using oratory and crinacle, that's why I compared in my measurement.
Interesting, with my 'flat plate method' if I EQ'ed the orange curve (no DSP) to lift bass and boost the 1-4kHz region, that would actually align with oratory and crinacle measurements well (the biggest issues anyway - not the micro details)
The dip at 6kHz shows in everyone's measurement but I don't see them actually applying their EQ and showing the 'after' measurement with EQ in place.
I think oratory just shows you the expected FR after EQ ?
crinacle also doesn't show any measurements with EQ applied ?
AutoEQ doesn't measure anything at all. All just simulated .
I wonder if they would still have the ~5.7 kHz dip - group delay is very messy at ~5.7 kHz in my measurement.
Maybe a reason EQ'ing at ~5.7 kHz has no effect in my measurement ?