With Trinnov enabled the center channel "position" was supposed to move up to the middle of the screen instead of sounding like it was coming from the physical location of the center speaker (which was below the screen).
What actually happened with Trinnov enabled was very similar to listening to a phantom center setup. For most of the demo I was seated 1 chair left-of-center from where the calibration mic was placed. I could not detect any distinct image in the center of the screen, everything that should have been "front and center" including dialog seemed to come from both the left & right speakers but nothing from the center. The longest demo with Trinnov enabled was the attack scene from Pearl Harbor and even the planes flying right down the center of the screen weren't positioned properly in the sound stage.
When I moved over one chair to the center sweet spot, most of the problems went away and it was more convincing. Unfortunately I only had to move ~18" to the right or left and the effect was detrimental instead of beneficial. The demonstrator from Sherwood suggested that Trinnov in "2D" mode instead of "3D" mode might have sounded better in that particular room arrangement.
Also something I learned about Trinnov (and suspected before I even went into the presentation), is that the correction software cannot compensate for poor speaker positioning if all speakers are placed very high or very low. So if you've got satellite speakers mounted close to the ceiling all the way around Trinnov is not going to be able to work any magic there in respect to virtual speaker positioning in the vertical plane. Of course the most common problem people have is the position of the center speaker, it's not too common to have the main left/right speakers in an odd spot.
