I have been doing some tweaking lately and I discovered something interesting/sucky. I have my front 3 channels balanced pretty well (surrounds are a different story because they are set differently to maximize balance at multiple seats), and I think I had previously only used the left-SW tone in avia to balance the sub. What I have discovered after trying the other tones is that despite the balance of the 3 speakers, the sub readings are different. The right-SW tone shows the sub being about 2+ dB higher in comparison to the left. The center is also different (lower than the left), but not by as much. What's the deal?