Yes, yet another thing I forgot to mention. (Why do I do that?) I am planning to have a completely seperate room from the house (a basement of sorts, but it will only contain my HT) designed only for the HT. I'm surprised about the PJ, but will definitely look into others.
Thank you for sharing that info, but I don't think it changes a single piece of advice given in this thread.
Upon further looking, I think I'll get an AT screen (AT-3 series) and either the JVC RS35 or the SIM2 C3X Lumis. The JVC has far less lumens, but that shouldn't be much of an issue, as the HT will be in a completely seperate room/part of the house, and underground no less. Although I think the throw ratio is a little better in the SIM2 PJ.
It's not just light control that matters, DrFunk. It's your screen size. The Sim2 would be desired for top notch PQ on a +200" diagonal screen. The JVC could only compete in black detail/levels for a while there, and now with the implemented CMS, I guess color accuracy is moot. The Sim2 should be better in every other category, I suspect. The problem is the $38,000 price tag.
I got away with a large screen, with more typical lumens, by using that Dalite HP material. Looks amazing, but it does include important compromises.
So, figure out the screen size you desire. To do so, first figure out the distances of seating. Then also the native aspect ratio of the screen. Then consider the sources you will feed (native hidef only?). Use a calculator like
this for the THX angle as a starting point. Note that you can use that for 16:9, but if you're thinking CIH, you can and will most likely desire greater viewing angle, with wider ARs.
After all of that, and most importantly IMO, get the PJ first and fire it at the blank wall for final decision.
As for AT materials, I don't know what AT3 is, maybe you can link it. One of the first I think of is
Seymour, and you can see that attached Audioholics article on that page (which Seymour himself wrote).
They are a popular choice for the DIY material, but of course you can still get them as fixed frame, etc. Basspig did the DIY with this stuff, and
here are his remarks.
Just for reference, this guy
converted an existing screen to AT, with the Seymour.
I also think of SmX, but I'm not sure how it compares, either in quality, nor price. Here are some impressive pics of the screen in action, in a converted
garage.
