Wednesday, March 14, 2012

The CAVX Approach To Room Design Part 2

In a previous post on ROOM DESIGN, I discussed screen sizes but didn't really provide any visual reference as to how the screen sizes actually look in a room. So the purpose of this post is to show just that.

I am still using the same method of taking the room length and dividing that by numbers between 5.18 and 3.68. In the image below, I have created two identical rooms and placed Scope [2.40:1] screens in each based on dividing the room length the numbers in bold. I also rounded the numbers for ease of calculation. The image gives a better representation of how each size could look in your room.

Minimum and Maximum Comparisons
For the room on the left, I divided the room length by 5.18 to find the screen height and I divided the room length on the right by 3.68. This method can be used regardless of Aspect Ratio and does not mean you must have a Scope screen.

The lines on the floor in both rooms are multiples of each room's screen height and are good places to start for seating locations. The front line in both rooms is just 2x the screen height and is the closest you would want to sit for either screen according to SMPTE. The farthest you would want to sit is 4x [3rd line in the room on the left]. Obviously you can't sit that far back in the room on the right due to the fact the 4 is a larger number than 3.68 so if the screen was too large, you would have to reduce it.

In regards to the room on the right, the screen would have to be Acoustically Transparent as there is simply no space left for speaker placement. The room on the left is probably more typical of size used in many Home Theaters and would allow placement of floor standing speakers.

My personal preference would be the room on the right, however the room itself would have to be deeper to allow the construction of the baffle wall behind the AT screen. 



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