Not logged in
 
Author
Topic: Mounting Height
member
Joined: Feb 4, 2007
Posts: 8
Reply to PostAlert Moderator
I'm thinking about buying the Mitsubishi HD1000U for a home theater project that I'm going to take on. My problem is that I'd like to avoid using the keystone correction if possible but I can't figure out what height (in relation to the screen) the projector must be for me to not use the vertical keystone adjustment. I'm doing a ceiling mount with a 106" screen, I think (that post is coming soon). I'm assuming that the center of the lens has to be the exact height of the top of the screen but I want to confirm this with you HT pros.

Thanks a lot.
[Edited by guyspy on Feb 13, 2007 at 9:14 AM]
moderator
Joined: Mar 28, 2005
Posts: 12,564
Reply to PostAlert Moderator
From the review (they really MUST get this into the specifications page!)

"The HD1000U has a fixed throw offset of roughly 35% of the picture height. This means that for a 100" diagonal 16:9 image, the bottom edge of the image will appear 17.15" above the centerline of the lens."

So, multiply your screen height by .35 and that is where the center of the lens must be above the top edge of your image. (right around 18")

So, if your projector is flush to the ceiling the center of the lens is likely about 4" from the ceiling and the top edge of the projected image will be about 22" from the ceiling. That is about the highest it can go.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
member
Joined: Aug 25, 2005
Posts: 2,915
Reply to PostAlert Moderator
member
Joined: Feb 4, 2007
Posts: 8
Reply to PostAlert Moderator
Thanks so much for your posts. The to be HT room has a really high ceiling (about 10 feet) and I was worried that I've have to gang the projector off a really long mounting pole but maybe it won't be so bad. I'll start calculating the figures now. Thanks again.
member
Joined: Feb 27, 2006
Posts: 2
Reply to PostAlert Moderator
Im considering the 3000U Mits projector and i downloaded that program which is awesome. One question i had was regarding the projector location.

When i put in my values for a 120" diagnal screen it shows the projector distance with two numbers. 17.4' and 14.4'

Does that mean that it recommends to put the projector anywhere within 14.4 and 17.4 feet from the screen?

Attachments:

projector calc for 3000u

804 × 609 pixels (79.90 KB)