For those of us REALLY stupid, can you explain why turning the gain up bumped up your DI volume? Wouldn't it ALSO bump up the amp speaker output? I thought your problem was you wanted X speaker volume but x + 5 house.
I'm in the same boat as you, doesn't make 100% sense with my limited knowledge. I usually set my gain with the master volume/amp output off. I do this because practicing at home I usually plug in and at gigs I use my wireless so gain is higher. So the amp had no sound when I turned up the gain. I noticed where the levels were at on the board and realized things were working as I liked. Was able to set FOH and then bring up stage volume to what I wanted as monitor level.
I just posted it as a "gotcha" kind of minute I had. If any expert can clarify it more I'm open but in the meantime I'll stay enamored with my Rumble 100.

