No REW graphs, just using Anthem's ARC quick measure plus trial and error for placement but I am getting the best output to date from my XS30.
First pic shows the room layout where the sub was in the corner as an end table for a long time. Output was OK but not great. Changed location of Display/Speaker area and pulled the sub about 2 feet further off the wall. Better output but not WAF compatible.
Next is after changing sofa location and getting the sub mid wall. Output is phenomenal at this point and it passes WAF as it is right between 2 windows and acts as a table. Right now its also a Christmas Tree stand
We watched Into The Storm last Sat night as the first movie test and it sounded as if the tornadoes were in the house!! Very nice. Also, the cat was in the dog bed at the beginning of the movie-he didnt stay too long