jgubman wins a prize!

I had to get used to the toggling, since the first time you push the button it shows the input, and second and subsequent presses change the mode, but...

The magic of NONE is that it is changing into DTS. I was able to lose LFE by my above tested method, and get it back by switching to DTS manually. I also observed that if I went through NONE on my way from one rear type to another, when emerging from the menus I was in DTS. I could then switch the DTS-ES manually, and LFE would disappear again.

So, in the end, it's as simple as:

No LFE in DTS-ES

At least I know a little bit more about what's going on when I'm changing my speaker settings...

--Mike