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Author Topic: Advice and helpful thoughts please
David Pannell
Phenomenal Film Handler

Posts: 1072
From: Horsham, West Sussex, UK
Registered: Nov 2004


 - posted November 10, 2009 06:19 AM      Profile for David Pannell   Author's Homepage     Send New Private Message       Edit/Delete Post 
Hi again everyone.

Apropros my home cinema, I am in a quandary with regard to the best placement of my new ceiling-hung screen.

The room is L shaped. It comprises an area for the audience of 18ft long x 15ft wide, with the smaller part of the L extending the longer length by another 7ft. Its width is 5ft.

The thing is that the projector will sit in the 7ft x 5ft part of the room, but as it is obviously offset to one side, where is the best place to install the screen?

There seems to be three options:

1. Perpendicular to the projector, which means it won't be in the centre of the far wall, (which has a large window in the middle).

2. In the centre of the window (wall) but still mounted square on to the room, resulting in some out of focus from side to side of the screen. (Don't know how bad this will be).

3. Still in the centre of the wall, but angled to be perpendicular to the projector.

As I see it, there is clearly going to be a tradeoff between aesthetics and technical correctness.

What does everyone think?

(Thanks for wading through this).

--------------------
Dave.

Valves and celluloid - a great combination!
Early technology rules OK!

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Chip Gelmini
Phenomenal Film Handler

Posts: 1733
From: Brooksville, FL
Registered: Jun 2003


 - posted November 11, 2009 08:31 AM      Profile for Chip Gelmini     Send New Private Message       Edit/Delete Post 
David

What you wrote and how you wrote it seems a bit confusing. Could you possibly post some pictures and maybe you might get some positive answers.....

Just a thought with all due respect....

CG

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004


 - posted November 11, 2009 09:19 AM      Profile for Jean-Marc Toussaint   Author's Homepage   Email Jean-Marc Toussaint   Send New Private Message       Edit/Delete Post 
Dave, I get a rather clear idea of how your room looks like (made a sketch). I would favor #1.

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--------------------
The Grindcave Cinema Website

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Martin Jones
Phenomenal Film Handler

Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008


 - posted November 11, 2009 09:23 AM      Profile for Martin Jones     Send New Private Message       Edit/Delete Post 
How thin are you David, or do you have one of those left-handed Ampros? Joking apart, move the projector further (up) from the corner and use a "periscope" of front silvered mirrors along the left hand wall of the large part, so that your axis is central to the right hand wall.
Martin

--------------------
Retired TV Service Engineer
Ongoing interest in Telecine....

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David Pannell
Phenomenal Film Handler

Posts: 1072
From: Horsham, West Sussex, UK
Registered: Nov 2004


 - posted November 11, 2009 09:29 AM      Profile for David Pannell   Author's Homepage     Send New Private Message       Edit/Delete Post 
Hi Guys,

Jean-Marc has it right!!! - except that it is a mirror image of his sketch, with the jutting out portion of the room for the projector at the bottom of the sketch, rather than at the top - so no, Martin, I don't need a left-handed machine!

The periscope idea is an interesting one, but somehow I think not. A bit OTT!

Well done, Jean-Marc, as the saying goes, "Great minds think alike - fools seldom differ"

--------------------
Dave.

Valves and celluloid - a great combination!
Early technology rules OK!

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David Pannell
Phenomenal Film Handler

Posts: 1072
From: Horsham, West Sussex, UK
Registered: Nov 2004


 - posted November 11, 2009 01:14 PM      Profile for David Pannell   Author's Homepage     Send New Private Message       Edit/Delete Post 
JUST TO SAY......

I shall be away yet again on another business trip from this coming Friday 13th, for 2 weeks!

Please keep the ideas coming, and I'll respond upon my return.

With grateful thanks,

--------------------
Dave.

Valves and celluloid - a great combination!
Early technology rules OK!

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Michael O'Regan
Film God

Posts: 3085
From: Essex, UK
Registered: Oct 2007


 - posted November 11, 2009 01:19 PM      Profile for Michael O'Regan   Email Michael O'Regan   Send New Private Message       Edit/Delete Post 
As I said to David privately, I would favour a centrally placed screen, slightly angled to square with the projector. Masking would hide this slight angulation. The screen at one side as Jean-Marc describes would irritate the hell outta me and I feel would look odd to an audience.

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Martin Jones
Phenomenal Film Handler

Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008


 - posted November 11, 2009 01:36 PM      Profile for Martin Jones     Send New Private Message       Edit/Delete Post 
And it would irritate me, too, which is why I suggested an "OTT" periscope to move the optical axis, a method used extensively in single screen auditoriums to make multi-screen conversions.
Martin.

--------------------
Retired TV Service Engineer
Ongoing interest in Telecine....

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David Pannell
Phenomenal Film Handler

Posts: 1072
From: Horsham, West Sussex, UK
Registered: Nov 2004


 - posted November 11, 2009 02:31 PM      Profile for David Pannell   Author's Homepage     Send New Private Message       Edit/Delete Post 
Still thinking, chaps. Lots of interesting ideas, which is most helpful.

I must admit, I'm not too keen on having the screen off to one side......why aren't houses built PROPERLY??

I can see that I'll have much to digest before making the final decision, but I'll certainly take all suggestions into consideration.

I want to get it right first time, for many reasons, not the least of which is not to have Carol keep pulling my leg about having got it wrong, or that it all makes the room look dreadful!

--------------------
Dave.

Valves and celluloid - a great combination!
Early technology rules OK!

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