I own the Pio 81 Elite and can tell you that the auto MCACC setup may leave you wanting! I see that you have the AVIA disk and an SPL. My advice, ditch the AUTO MCACC and use the Manual setup instead. Set everything to 85db - theater standard and tweak from there!
I work at a theater so I was able to get a professional SPL with an add-on frequency selector. I'm not familiar with the Radio Shack SPL and it may not have the add-on feature, but even without it the results were better than the auto settings. With the add-on I was able to adjusted each frequency in the manual MCACC, evenly, for each speaker and the sub. The results were amazing. The Auto MCACC does a decent job but doesn't compare to manually setting it up! IMHO
