I found some of the measurements.
Starting with the AVR, a Denon 4800 with both Audyssey XT32 and Dirac with DLBC.
This is uncorrected without subs:
View attachment 435694
This is with XT32 correction up to 1100Hz and 2x SVS SB2000 subs:
View attachment 435690
This is with Dirac without DLBC with subs with correction limited to 1000Hz (with DLBC doesn't look much different):
View attachment 435691
Moving on to the silent PC running Dirac Standalone.
This is Dirac Standalone corrected to 1000Hz without subs (can be improved with more work):
View attachment 435692
^ I shot the Dirac measurements with the mic in my hand. I need to redo them, but I usually just listen via the AVR these days, so motivation is low.
For those wondering about DLBC, here are the differences.
Left with and without:
View attachment 435695
Right with and without:
View attachment 435696
And all together:
View attachment 435697
In my environment, DLBC actually performs worse and was not worth the upgrade cost.
And if you are wondering what Dirac and Audyssey can do if I let them correct the whole FR with custom curves...
Dirac full correction with subs:
View attachment 435698
Audyssey full correction with subs:
View attachment 435699
View attachment 435700
Awesome graphs! Very useful to see! That first XT32 graph is especially smooth. I wonder though why it looks so different to the second from last graph with the "full XT32" correction?