16:9 Screen Vs. 2.37:1 CIH Screen - Page 5 - Home Theater Forum and Systems - HomeTheaterShack.com

Old 02-24-08, 07:42 AM
Shackster
Maikel

Join Date: Jan 2008
Location: Arnhem, The Netherlands
Posts: 77
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Quote:
Mark Techer wrote: View Post
Actually the ideal room also requires careful consideration for room acoustics as well.

For example, a room's length should never be greater than 3x times the height, which is why you see room ratios like 1.0:1.6:2.3.

Then you still have to take the screen height saeating distance into account...

Mark

OK Mark, we are getting closer....

So if the maximum room height is 8' (2.45m),
the maximum room depth should be 8'x3=24' (7.3m),
the maximum screen width 24'/3.68x2.37= 15.5' (4.7m)
the corresponding screen height (at 2.37:1 projection) 6.5' (2.0m)

I then would put the screen 1.5' up from the floor.
At a viewing height of 3.5' (eye level) I will be at about 1/3 of the screen height.
Believe that's OK?

What do you think?

Maikel.
maikeldepotter is offline

Old 02-24-08, 08:16 AM
Mark Techer

Join Date: Jan 2008
Location: Brisbane, Australia
Posts: 613
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Quote:
maikeldepotter wrote: View Post
OK Mark, we are getting closer....

So if the maximum room height is 8' (2.45m),
the maximum room depth should be 8'x3=24' (7.3m),
the maximum screen width 24'/3.68x2.37= 15.5' (4.7m)
the corresponding screen height (at 2.37:1 projection) 6.5' (2.0m)

I then would put the screen 1.5' up from the floor.
At a viewing height of 3.5' (eye level) I will be at about 1/3 of the screen height.
Believe that's OK?

What do you think?

Maikel.
I think the following would work really well (actually know this as I have built one in the past)

Room Ratio

1.0 : 1.6 : 2.3

Room Size

2445mm x 3912mm x 5624mm

Screen Size (MAX)
5624mm / 3.68 x 2.37 = 3622mm x 1528mm

Screen Size (MIN)

5624 / 5.18 x 2.37 = 2573mm x 1086mm

Seating Distances

MAX screen - Not less than 3056mm with 4584 being preferred.
MIN screen - Not less than 2172mm and not farther than 4344mm with 3258mm being preferred.

Surrounds to be at 3x image height...

Mark

PS You wil notice that even with the largest screen size there is roughly 150mm oneach side for the side masking curtains...
Mark Techer is offline
Old 02-24-08, 09:08 AM
Senior Shackster
muzz

Join Date: Nov 2006
Location: Raynham,MA
Posts: 368
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Never even considered CIH, because I also always felt that the lenses were WAY over my budget.

I now see that Mark has made this an affordable endeavor, that I may look into now.

Thanks Mark

Gary
muzz is offline
Old 02-25-08, 06:32 AM
Shackster
Maikel

Join Date: Jan 2008
Location: Arnhem, The Netherlands
Posts: 77
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Quote:
Mark Techer wrote: View Post
I think the following would work really well (actually know this as I have built one in the past)

Room Ratio

1.0 : 1.6 : 2.3

Room Size

2445mm x 3912mm x 5624mm

Screen Size (MAX)
5624mm / 3.68 x 2.37 = 3622mm x 1528mm

Screen Size (MIN)

5624 / 5.18 x 2.37 = 2573mm x 1086mm

Seating Distances

MAX screen - Not less than 3056mm with 4584 being preferred.
MIN screen - Not less than 2172mm and not farther than 4344mm with 3258mm being preferred.

Surrounds to be at 3x image height...

Mark

PS You wil notice that even with the largest screen size there is roughly 150mm oneach side for the side masking curtains...
Hi Mark,

I do not understand the 3x image height for the surrounds. Having a 9' wide and 3.8' high screen you would have to hang the surrounds 11.4' from the floor????

Maikel
maikeldepotter is offline
Old 02-25-08, 08:23 AM
Mark Techer

Join Date: Jan 2008
Location: Brisbane, Australia
Posts: 613
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Quote:
maikeldepotter wrote: View Post
Hi Mark,

I do not understand the 3x image height for the surrounds. Having a 9' wide and 3.8' high screen you would have to hang the surrounds 11.4' from the floor????

Maikel
No 3x the image height off the screen or 90 degrees to the seating positon of 3x the imaghe height if that makes sense...

Mark
Mark Techer is offline
Old 02-25-08, 10:56 AM
Shackster
Maikel

Join Date: Jan 2008
Location: Arnhem, The Netherlands
Posts: 77
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Quote:
Mark Techer wrote: View Post
No 3x the image height off the screen or 90 degrees to the seating positon of 3x the imaghe height if that makes sense...

Mark
It does.
Thanks, Mark.
Enough info to do some usefull calculations.

Maikel.
maikeldepotter is offline
Old 02-28-08, 08:17 PM
Elite Shackster

Ahmed

Join Date: Aug 2006
Location: Cairo-Egypt
Posts: 1,940
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

The only problem is with HD where a video scaler is required...That adds lots of money!

ASME AI
Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3
Important HT proverbs:
- "you can never have too big a screen" (talking about still pictures)

Projector selection basics
Epson TW 2000 review
Blaser is offline
Old 02-29-08, 03:59 AM
Mark Techer

Join Date: Jan 2008
Location: Brisbane, Australia
Posts: 613
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Thankfully now, some projectors do not need a scaler for HD...

Mark
Mark Techer is offline
Old 02-29-08, 09:55 AM
Shackster
Maikel

Join Date: Jan 2008
Location: Arnhem, The Netherlands
Posts: 77
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

Like the Panasonic pt-ae2000 for "only" 2700 \$ or Euro!
maikeldepotter is offline
Old 03-02-08, 03:03 PM
Elite Shackster

Ahmed

Join Date: Aug 2006
Location: Cairo-Egypt
Posts: 1,940
Re: 16:9 Screen Vs. 2.37:1 CIH Screen

OK and for projectors who do not have a scaler for HD, is there a cheep video processor to do do?

ASME AI
Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3
Important HT proverbs:
- "you can never have too big a screen" (talking about still pictures)

Projector selection basics
Epson TW 2000 review
Blaser is offline

 Bookmarks

 Tags 169 , cih , screen

Message:
Options

## Register Now

Random Question
Random Question #2

User Name:
OR

## Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.