Im not going to use my 6XX to calibrate since its modded so could be imbalanced with all the hastily cut and pasted dynamat. I need to look up how to average sets of data and how to overlay. And does REW + EARS do CSD because I couldnt get it to display. Its been a while since I used REW and its changed a little... I had used it previously to help dial in my car audio back in 2012(?). I dont think it was even available on mac back then. Will be applying SBAF comp to HEQ once Ive gotten a better handle on REW and headphone positioning.