Those are total filters for the room. Each speaker in my setup uses between 1-5 filters each. Each speaker can use up to 20 filters each.

When I switch to HBO (or pretty much any movie channel) the display on the 861 still says PLII. It doesn't switch to cinema or dolby digital. The only thing it does do is displays the small "digital" light to the left of the main display. I guess it can't upsample 2 channel digital streams. I don't know though, hopefully someone with v4 can see if they are getting the same results or has an answer for this.

DougS