I've spent some more time listening to the SC-77 and exploring it's functions. The first time I ran MCACC I did the full auto and let it pick the speaker size. It set all of my 5 satellite speakers to "large". That was also recommended by the speaker manufacturer, but they start dropping off quite a bit around 60 hz, so I prefer to set them to small. MCACC set the subwoofer channel to +5dB. So I turned up the volume controls on the subs to get them 5dB higher (using a SPL meter) before I ran it again. Running MCACC again retaining the small speaker size then resulted in the subwoofer channel being set to +7dB, which really surprised me. I'm setting the microphone on top of a cardboard box on the couch to get it near ear level, and I'm wondering if the box may be resonating enough to throw off the readings for the subwoofer.
One thing I'm finding interesting is the "Auto Sound Retriever" function. It certainly brings Pandora radio to life. Pioneer explains it as: "The Auto Sound Retriever feature employs DSP technology to restore sound pressure and smooth jagged arti- facts left over after compression." Restore sound pressure and smooth jagged artifacts? PFM?
I do really like using iControlAV on the iPad to access and control the various functions on the SC-77, particularly the Sound Explorer options. I'm not quite sure what the point of the view with the random dropping and bursting bubbles is though, other than to be cute. The list view makes a whole lot more sense to me than even the organized bubble view.