Thanks to member fbczar I found a helpful guide for creating target curves in Dirac Live. I thought some might find it helpful. It was written by AVS user AustinJerry. For the XMC-1, this requires the Full version of Dirac Live available from Emotiva.
I haven't upgraded my Dirac license yet, but when I do, this looks like it will be very useful. Thanks.
Emotiva XMC-1 GoldenEar Aon 3 GoldenEar Super Center X Rythmik Audio F12 x 2 (stereo subs!) Sunfire Cinema Grand 200x5 Oppo BDP-103 Technics SL1600mk2 Emotiva XPS-1 Axiom M3v2 Apple TV4 Synology DS214Play Luxman K-406 Fiio X5 3rd gen Harmony Touch