After reading a topic, "Putting 11's On Jtv 69" about going to heavier strings (10's to 11's), people thought that it improved the acoustic models but made the overall volume louder due to the increased downward tension on the piezo's. Many feel that release 2.0 firmware improves the acoustic models, and most of the electric models, but has decreased outputs. What if you do both. Bump output up with 11's, and take it back with 2.0 while getting improved models. Just an idea.
I would try it in a heartbeat, but unfortunately I went to 11's already at 1.9 for improved acoustic sounds. I play in a church band and I save a different preset for each song with the HD500, so I don't want to load 2.0 and throw everything off at this point. And no, I don't want to switch to 2.0 and 12's (ouch). 11's were not bad to get used to after 10's. Someday I'll play with string volumes in Workbench.