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Author Topic: Spkr placement behind the screen with different ratios ?
Alan Gouger
Jedi Master Film Handler

Posts: 501
From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 06-28-2003 12:37 PM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
Hello

I am almost finished with my home theater and I am going with a ( due to limited space) 9-foot wide 235:1 scope screen.
Maintaining constant height I have motorized curtains that open from the side and stop at presets for the different aspect ratios.
I went with the micro perf so I could place my speakers behind the screen and out of site.

My question is where do I place my side speakers. If I place them based on the 185 ratios they are to close and if I place them out to the end of my screen for scope and maximum separation then when the curtains close for scope movies the speakers are muted.

I know in a real theater following the same constant height formula in the flat format you may have 40 feet of separation but I would think you would still want the speakers out as far as possible.

What do they do in the real theater and what are your recommendations for my undersized screen regarding behind the screen speaker placement. I definitely do not want to see them and want them out of site.

Thanks!

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 06-28-2003 12:55 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
In "real" theatres, you use acousticly transparent masking for the side masking. When the lights are down, you won't see through it...when the lights are up you can kinda see the screen through it. It is kinda like speaker grill cloth.

Some front-end guys will sew velour to provide a crisp edge to the masking (acoustically transparent masking is not good for hiding the aperture plate shadow). I don't like that method very much. The different materials shrink at different rates and eventually will look bad. A better method is to fold the acoustically transparent masking over on itself several times and then sew it in place or around a pole to provide that nice crisp edge.

Steve

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Alan Gouger
Jedi Master Film Handler

Posts: 501
From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 06-28-2003 01:49 PM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
Ahh thanks Steve. Time to get new masking curtains made [Smile]

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Jack Ondracek
Film God

Posts: 2348
From: Port Orchard, WA, USA
Registered: Oct 2002


 - posted 06-28-2003 01:52 PM      Profile for Jack Ondracek   Author's Homepage   Email Jack Ondracek   Send New Private Message       Edit/Delete Post 
quote:
A better method is to fold the acoustically transparent masking over on itself several times and then sew it in place or around a pole to provide that nice crisp edge.
Wouldn't you wind up with the acoustical characteristics of velour by doing that?

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 06-28-2003 02:02 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
You only fold it over a small band to make a dark leading edge
I often use a framed leading edge of comando cloth and then the accoustic material off from that

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