The reset suggestion is a good one.
Based on what grunt said and what I am witnessing, I am now wondering if properties within the speakers are changing. I can tell you that with my old speaker system, which was good and worn in, the auto-cal was always consistent in setting my levels and distances.
Now with regard to surround performance, look at my room and trace out rays for the sound propagation. The rears have their inside tweeters pointed right at my sweet spot (located by the post). Their acoustic distance is the same as their physical distance. But the sides are a completely different story. The sound from their "front" tweeters has to bounce off the front wall before it reaches my ears. Their acoustic distance is about twice their physical distance.
So I changed the settings in the Denon as per above. And you know what? Instant ambience!!! Now I know exactly what JohnK and others are talking about when they say that PLIIx adds life. I still need to tweak the speaker volumes but I think I have discovered the answer to the long-standing mystery of PLIIx.
But I still don't understand why the Denon is getting confused with the phase. I wonder if it's getting confused with that post but the post was there 4 months ago too. I'll have to try Randy's reset suggestion.
So now I am curious. How are you all setting your delays (distances)? Are you letting your receivers do it for you or are you "ray tracing"?
