Do you happen to have two IRs active in your cab block while you’re auditioning files? That would create less variance if you have a constant second mic active. With the Fane having less top end than a Celestion, the character change between sweet spot captures (1-5) is apparent, but not as drastic as drastic as it is on a V30 or Greenback. For the Hiwatt, try comparing 57-CE 2 (cap edge), 57-1 (sweet spot), 57-CN (cone), and 57-CNE (cone edge). You should have a MASSIVE tonal variance between all of those files. If you don’t hear a huge difference, then you may have an odd setting somewhere in your unit that’s skewing your results.I will say this, though: either my ears are still hurting from this morning's test, or there really IS a lot less variance between these samples and other ones. E.g. between a '57 mic and the 121, I'd expect to hear much more difference than I do. It almost feels like different IRs of the mics were applied to one baseline IR of the speaker.
Is the Fane just that much less susceptible to different mics and placements?
Keep me posted.