Here is another new issue:
I swapped over to a Marantz AV7702, Klipsch RF7II fronts and the 7500 at the same time. XT32 is setting my center bottomed out at -12, and the fronts at -9db. Before, with my XPA-3 and smaller towers (one step down from RF7's) my fronts were -4 and the center was -9. At the advice I checked the SPL of all 3, and luckily they are withing 0.5db, so I dodged a bullet. Little worried about the larger and more efficient center I am fixing to get.
I am currently using RCA's, would the difference in gain on the XLR (34db vs 28db) have any affect here? Or is my only option an attenuator on the RCA's? I guess this is just the product of a highly efficient speaker and a powerful amp. I'll also admit I do not understand a lot about that difference in gain.