You hit the nail on the head with you explanation of the Bose approach. If I had a lot of adjustments that would be ungood. The Bose makes great sound (to me) and the only adjustment I made was to decrease the Bass so TV voices are not so muddy.
The 50 in the living room is our primary system but the bedroom one is great to crank up the volume and have a shower sing-a-long with Patsy Cline, Dolly Parton, or Johnny Cash. Gotta love Dish music selections.
The bay speakers are self powered and would entertain most of the RV park if so desired