Another addict is born.........
Looks great Chris -
Congrats!! 
As far as scanner noise and image size -
I tend to cringe if they're "squealing" all the time!
There are several references around concerning scan angles and image size, but here's my very simplistic approach -
I have found that you should generally be able to get a fairly-simple frame (circle, square, etc.) projected to a good "wide screen" size (8' x 8' "ish") across a typical room without generating a lot of loud noise from the scanners. Having said that, some abstracts and "circles of dots" tend to generate much more noise than basic shapes, even when the scan size is reduced.
Intermittant squeals should be fine, and you can expect the scanners to get a bit warm to the touch.
If they're squealing ALL the time, and / or getting HOT to the touch, you might need to do a bit of tweaking....
Last edited by Stuka; 01-26-2010 at 15:10.
RR
Metrologic HeNe 3.3mw Modulated laser, 2 Radio Shack motors, and a broken mirror.
1979.
Sweet.....