Just like already said, there is no a magic number. Set it at 80 and listen for a few days, get used to the sound. Then try to change things around a bit. Maybe you find that setting the main channels at 60 or 70 sound better for you.

What are you using right now as an amp? A receiver? I am very curious in your findings whether the 7125 has made any difference.

Thanks,
Gena