Riser Height Calculator - Page 6 - AVS Forum
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post #151 of 161 Old 04-07-2014, 07:36 PM
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Absolutely subscribing to this thread. Can't wait to run the calc when I finally know my room dimensions.
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post #152 of 161 Old 04-11-2014, 12:56 AM
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Yikes, according to my calculations, my riser has to be 18.5". I REALLY wanted three rows, but 3' of riser in a basement with a height of 85" isn't going to work frown.gif

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post #153 of 161 Old 05-25-2014, 02:56 PM
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In the variable plug ins, what is R defined as?

As in: R*D2=V2
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post #154 of 161 Old 06-04-2014, 08:37 AM
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All, I am trying to figure out what height my riser needs to be and I am kinda flying blind here. I know the following variables.

I plan on using a Benq W1070 for my PJ and I have mounting flexibility to place it between 11-17' from the screen. I know I will have a row of three Berkline Tangiers on a riser at roughly 18', the riser will be 7' long and 10' wide. I know the front row will sit as close to the front of the riser as possible so let's call it 11' for the front row. Based on BIG and other comments and I can verify this tonight at home I think my seated viewing height will be 38" (42" to top of heads seated, account for some sinking into the recliners). I also will have bar seating behind the riser that will not rest on the riser as my riser will simply be a "box" in the middle of the room to elevate the 2nd row seats. The bar will be most likely 42" tall and I'm not worried about folks at the bar having partially obstructed views as much as I am the second row.

I plan on using a 16x9 AT screen that will be 130" WIDE, not diagonal. Any help is appreciated as I need to get this done so I can order my carpet.
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post #155 of 161 Old 06-04-2014, 09:13 AM
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Quote:
Originally Posted by wraunch View Post

All, I am trying to figure out what height my riser needs to be and I am kinda flying blind here. I know the following variables.

I plan on using a Benq W1070 for my PJ and I have mounting flexibility to place it between 11-17' from the screen. I know I will have a row of three Berkline Tangiers on a riser at roughly 18', the riser will be 7' long and 10' wide. I know the front row will sit as close to the front of the riser as possible so let's call it 11' for the front row. Based on BIG and other comments and I can verify this tonight at home I think my seated viewing height will be 38" (42" to top of heads seated, account for some sinking into the recliners). I also will have bar seating behind the riser that will not rest on the riser as my riser will simply be a "box" in the middle of the room to elevate the 2nd row seats. The bar will be most likely 42" tall and I'm not worried about folks at the bar having partially obstructed views as much as I am the second row.

I plan on using a 16x9 AT screen that will be 130" WIDE, not diagonal. Any help is appreciated as I need to get this done so I can order my carpet.


There is a riser calculator somewhere on here, but couldn't find it off hand.  One other input is the "height of of bottom of screen", and this I believe is the screen itself (not the black velvet surround material).  The higher the bottom of the screen, the lower the riser and lower the bottom of the screen, the higher the riser. 

 

A 130" wide makes for an ~ 73" image height, so, depending on your ceiling height and whether you are using a stage, that could make for a higher riser!   A question out of curiosity, will you use the 130" wide for 16:9 reasons... or, use 130: wide for 2.35:1 and then when viewing 16:9 material, be able to use more 'height' on the screen.

 

I am leaning towards a 130" wide, 2.35:1, but don't like that it makes the 16:9 max image smaller, I was thinking of doing a DIY that could make the screen 'taller' so, I could have a larger 16:9 image, but maybe an easier way is just ordering the 130" wide 16:9, of course, causing larger bars on top/bottom of the 2.35 image at 130" wide.

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post #156 of 161 Old 06-04-2014, 09:41 AM
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Quote:
Originally Posted by kmhvball View Post
 


There is a riser calculator somewhere on here, but couldn't find it off hand.

 

It is a sticky at the top of the forum. Which happens to be this very thread we are posting in ...


It appears my hypocrisy knows no bounds.

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post #157 of 161 Old 06-04-2014, 09:46 AM
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Yeah I know about the calculator website. I will check it tonight. I am beginning to think I will have to shrink to a 120" wide 16:9 screen or go 2:35 in order to avoid a 20" tall riser.
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post #158 of 161 Old 06-04-2014, 11:00 AM
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Quote:
Originally Posted by kmhvball View Post


There is a riser calculator somewhere on here, but couldn't find it off hand.  One other input is the "height of of bottom of screen", and this I believe is the screen itself (not the black velvet surround material).  The higher the bottom of the screen, the lower the riser and lower the bottom of the screen, the higher the riser. 

A 130" wide makes for an ~ 73" image height, so, depending on your ceiling height and weather you are using a stage, that could make for a higher riser!   A question out of curiosity, will you use the 130" wide for 16:9 reasons... or, use 130: wide for 2.35:1 and then when viewing 16:9 material, be able to use more 'height' on the screen.

I am leaning towards a 130" wide, 2.35:1, but don't like that it makes the 16:9 max image smaller, I was thinking of doing a DIY that could make the screen 'taller' so, I could have a larger 16:9 image, but maybe an easier way is just ordering the 130" wide 16:9, of course, causing larger bars on top/bottom of the 2.35 image at 130" wide.

I am going to play around with the riser calculator at home, can't access it now. When I used BenQ's throw calculator it says the screen will be about 20" from the floor. I am going to do a DIY 16:9 screen that will be about 73" tall. I did the calculation using the Carlton Bale v3.3 calculator and it tells me I need a 19" riser. That seems a bit crazy.
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post #159 of 161 Old 06-04-2014, 12:46 PM
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In the variable plug ins, what is R defined as?

As in: R*D2=V2

R is the only variable not defined above.
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post #160 of 161 Old 06-04-2014, 01:20 PM
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V1/D1=R
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post #161 of 161 Old 07-24-2014, 09:11 AM
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my only question is around the projector in how that factors into the riser height. At some point my riser raises my head into the picture.

I really wish I could figure out a cheap and dirty way to build a temporary riser so I could play with different heights. I suppose a stack of drywall with a sheet of plywood on top would probably do the trick. But that's not necessarily cheap or easy to deal with.
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