When I had my VP150 set up in my previous theater, it was below my screen. There was a noticeable improvement with it being flipped upside-down so that it angled up towards the listening area.

I think that the only thing that makes the VP180 so that it has an "inverted" option is that I believe that it has feet on the "bottom." I honestly don't remember, and it would require me to take down my screen and look behind my false wall to check. Sorry.

Farewell - June 4, 2020