Measurements taken with RTA 1/48 periodic pink noise on infinite averaging. I used a moving microphone technique at 0 degrees of head position until the averaging stopped and then went another 60 samples. On average 120 samples per measurement. Dynamic EQ was enabled at 10db and dynamic loudness set to light. Speakers set to small with crossover at 40hz and LFE set to 120hz. I choose those settings while testing for dialogue audibility, removing boominess in bass and limiting sharp unpleasant dynamic loudness. I limited the frequency spectrum to 500hz after trying both that and full band.
From the measurements below it seems my listening position has nulls at 40 and 80Hz, but I wouldn't expect either of those things to be a rootcause of my perceived issues with the system, though maybe the hump in 100-200 is to blame. Interestingly, it doesn't seem like xt32 multiEQ is doing a whole lot. It mostly seems like it's smoothing out 20-40hz and otherwise just shifting problem frequencies around or doing nothing at all. For instance, on the all speaker measurement it just pushes the peak from 60hz to 85hz and on the right speaker it just pushes the null from 80hz to 120hz. Other than that it's pretty similar.
All speakers raw measurement
All Speakers smoothed 1/12 (Blue- Direct / Orange Stereo Corrected)
Left speaker smoothed 1/12 (Blue - Direct/ Purple Stereo Corrected)
Right Speaker (Blue - Direct/ Red Stereo Corrected)
Sub (Green - Direct / Purple Stereo Corrected)