My SC-67 replaced an SC-07. My original speaker setup was: B&W CDM7 towers for Fronts, Jamo Concert 8s for Front Wide, Martin Logan in-wall 8" 3 ways for front highs and sides, B&W DM 602s for rear, Velodyne center & sub.
I ran the calibration, it sounded thin and lifeless compared to the SC-07. I changed the mic location and, checked to make sure all speakers were set to "large"...a little better but still pretty pedestrian sound. I re-ran the calibration using the mic from a Parasound Halo C2 processor. Much, much better..although the OSD told me that all my speakers were reversed (out of phase). I knew that this was not accurate so I took the option to ignore the message.
Since then, I have reached the conclusion that the current series of Elite receivers simply don't have the punch that the previous generations had. Absent this breathing room, the sound suffers. To prove up the theory, I replaced the fronts with old-school JBL 4311s (basically L100 studio version); among the most sensitive speakers ever made. The difference was dramatic although still quite thin.
I like all the functionality of the SC-67 but weighing in at a bit more than half of what the previous Elite flagships weighed, it is clear that the power supply just does not have the "iron" to deliver. My next test is to use the SC-67 as a processor and use some massive amps and rerun the tests and auditions.
Has anyone figured out how to use the FW, FH, and rear/sides when the media does not support it discreetly? In other words, is there a mode that will synthesize those channels?