Thank you Cliff!!!
Try aligning the "distance". That should put the in phase in a usable state. Try a few IR's, some will mix (sound) better than others.
this is very generous, thank you!!!www.fractalaudio.com/downloads/misc/4x12%20HJ%20RCA.zip
This is a capture of a Harry Joyce 4x12 done at RCA studios using some of the finest mics and preamps available. A little gift to everyone for the holidays. IMO they are some of the best IRs I've ever heard.