Originally Posted by CubanLegend
looks nice, but the image projected is SUPER high up? what UST 4k projector out there has the lowest measured distance from the bottom of the projector to the bottom of the projected image?
I'm not 100% sure but I think the LG HU85L has the lowest vertical offset. Usually this is measured from the top of the projector to the bottom of the image projected, but in terms of bottom of projector to bottom of screen it has 15.5 inches for a 120" screen and 13.6 for a 100" screen. The Xiaomi/Fengmi's are 17.5 for 120" screen, not sure on 100", but I'm assuming a couple inches off that figure. The Optoma P1 is, IIRC, 19.5 for 120", but their lenses fluctuate greatly between units so it could vary wildly--a few inches here or there.
I think Optoma got it right for a larger screen and that incorporates your typical 5.1 or more home theater with a center channel speaker, but LG got it right for those only wanting a sound bar, but too bad they didn't get the rest right (sound and image versus cost). The Xiaomi/Fengmi's are probably right in the sweet spot between the two-close enough for 100" screens, but you can still have a center speaker between projector and screen for 120" and higher.
EDIT: Here's what happens when you have a lower vertical offset and a center channel. The center channel is higher, but so is the screen. Credit
@Run and Gun
UST's are meant to be placed on or close to the floor with a CLR screen. Until the furniture market starts supporting UST's you're going to see a lot of people put them on their existing console that was designed for a TV, resulting in an image way to high for the bottom third to be at the viewer's eye.