I read your post again. I got it now. Set crossover/delay on OPPO,leave gains at zero on OPPO.Use gains on 990 set speakers to large sub on LFE then create another macro to revert back to small when playing all othe digital sources.Is that right?
I will create a new MACRO by sunday for reverting back to small. You are right that you will have to remeber what you are on shutting down 990.