AT screen is just a new
AT screen. I've had a 100" one since 2008. I've just upgraded it to a new screen material and much larger. Now 126". I was using SeymourAV Center Stage and now it's their new Center Stage UF material.
Also new is that 75% of the room is treated with some acoustic material (ECOSE) where as before almost none of the room had any treatment at all aside from a couple of curtains. That alone made a gigantic change in the sound.
New surrounds. Went from four Emotiva ERD-1 bipole/dipole surrounds to four JBL 8330's. Got them a long time ago and never did anything with them til now. "Free" upgrade.
Only two additional 18's now. Extra pair of Sound Splinter RLp18's that I never got around to using. Needed and wanted a riser so what better than to just make the riser a subwoofer. Lol!
Last year when I built my still-not-officially-named 'mega mains' I had all my 18's up front behind the mains. Now I have a pair each in the rear corners and the eight SI HT18's still up front. Nearfield is a new thing for me.
It was quite amazing how tactile it was before this now it's just ... a whole new level. Sometimes overbearing. I'm still tinkering but after a few weeks of having everything up and running I feel now (with those posted graphs) that my response is a good place and might just be happy. At least for now.
For your chart, my new details:
1) eight sealed Stereo Integrity HT18d4's (four 8cuft dual opposed enclosures)
2) four sealed Sound Splinter RLp18d4's (two 8cuft dual opposed enclosure) *nearfield*
3) two sealed Sound Splinter RLp18d4's (one 14cuft subwoofer riser) *nearfield*
4) six JBL 2226J's (1.5cuft sealed enclosure each)
New room size = 1,900cuft
You don't have to put all that info in there, of course. Just in case you or anyone was interested.