|Originally posted by kseyedoc|
so I don't understand. what is the difference between the component output on the dvd and the component output on the hd box? Why does it need to be a DVIi?
It just needs to be analog when you send it to the CRT. DVI-I has the extra analog pins which can use a $4 DVI->HD15 adapter to feed the analog signal to the projector. Or you can use a transcoder ($69 for a low quality one, $200-$500-$1000+ for better ones). There is a component interface board (IFB) for the 1271/1272 (but it's not the common IFB-11). But let's get past the basics first.
|What about keystone and lens shift? these are easy to adjust on the z1? do the CRT's have these adjustments? How big an image do I get max?|
CRTs screensize is directly proportional to it's distance from the screen. If you want a bigger picture, you move it further back. If you want a smaller picture from where it's mounted, you can reduce the size of the raster on the phosphor, but that's a waste because the image will be smaller and dimmer, and any wear will prevent you from increasing the image to it's proper size in the future.
The basic steps are:
1) make sure your raster (the size of the input image on the phosphor face) is properly sized to use the most phosphor as possible (stay within any pre-existing worn areas).
2) You can use the various throw distance tables and calculators to get within 10% of your mounting position for planning purposes, but before ceiling mounting, set the projector on a moveable table or cart and slide it back until it fills your desired screen size, while providing adequate brightness and punch for your room's lighting. I like a large image. The CRTs will be able to provide the same screen sizes as the Z1. 8' (96" diagonal or even 96" wide) is a sane target. I like 172", but I'm foolish.
3) ceiling mount the projector.
|I read that the projector has to be only a certin distance away or the proper focus will damage the tubes? I want to ceiling mount the proj. is this a problem on an 8 foot ceiling? I have kids and dont think the floor mount ti the way to go. On the other hand, how easy are the heavy Crts to knock out of adjustment? I could build it into a coffee table.|
sory to ramble like this.
Yes, there are keystone adjustments. Once you tighten the adjustment bolts, it's going to take a lot more than a few head bumps to throw the setup off.Yes, they hang down 15"-24". If you're 6'+ tall like I am, you might want to consider placing a row of seats directly under the projector so you don't walk under it. I've found that if my head is directly under the lenses when seated, it's impossible to bump your head when standing up.