Slaughter House Cinemas (Project Thread) - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com
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post #11 of 345 Old 07-16-08, 07:46 PM Thread Starter
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Re: New basement HT Posting progress photos

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I think that screen will be to big for your viewing distance ... here is a calculator to get the recommended size
Based on that, it looks like about 13.5 feet would be best for 120" screen? If I am reading that right then I should be able to adjust for that. Thanks!
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post #12 of 345 Old 07-16-08, 07:50 PM
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Re: New basement HT Posting progress photos

Please do things in the correct fashion. Determine seating position first for best sound. Then determine the proper screen size based on that position. Moving seats to fit a screen is 100% backward - sorry.

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post #13 of 345 Old 07-16-08, 08:35 PM
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Re: New basement HT Posting progress photos

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Please do things in the correct fashion. Determine seating position first for best sound. Then determine the proper screen size based on that position. Moving seats to fit a screen is 100% backward - sorry. Bryan
I think he already did ... he used the 62/38 rule, he meant to write 15.5' as the viewing distance from first row ... Right, Carls64???
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post #14 of 345 Old 07-16-08, 08:46 PM
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Re: New basement HT Posting progress photos

OK. Sorry - must have misread things. The 62% is not hard and fast, it's just a starting point but will usually be in the ballpark.

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post #15 of 345 Old 07-16-08, 11:17 PM Thread Starter
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Re: New basement HT Posting progress photos

Your right, I did do it backwards I guess. I simply eyeballed up what the max size screen I could fit in that area and have about a 2 foot space below the screen. I have up to 24 foot of space to work with from the screen to the back wall. The calculator says 12-19'. I guess I can place the seating all the way back 1 foot from the back wall and then we have a viewing distance of about 16' & 21' for the 2 rows of seating.
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post #16 of 345 Old 07-17-08, 07:19 AM
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Re: New basement HT Posting progress photos

24' would put the first row optimal starting position at approx 15' or slightly less. Put the 2nd row as far from the rear wall as you can get it and still have clearance to the front row considering the reclined positions.

Seated front row eye position should be approx 1/3 of the way up the viewable area of the screen.

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post #17 of 345 Old 07-17-08, 12:58 PM Thread Starter
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Re: New basement HT Posting progress photos

My math is never been very good, and my eyes are rolling around in my head with this, so let me see if I can spill this out without it being too complicated.

The 120" screen is probably going to give me grief, and I think the 106" is going to be too small. I have already order the screen (120") but if I am convinced I will send it back and get a 106".

Option A:
The unfinished room dimentions are 13'2" x 29'7 1/2" and 7'7" High. I have a drain pipe that is on the same wall as the screen, I was able to prop it up so the soffit will be about 8" from the ceiling finished and about 11" extened out. Furing up the celining up to the ibeam I will get a 7'5" Height. The screen location on the way will give me a maximum height of 6'11". So with that figure of 89" If I place a (120") 120"x59" screen (not sure if that counts the screen only and the 2" border) on that wall, that then gives me only 13" from the floor, unfinished floor. I want to eventualy if not sooner place a stake made up of 2x4 and 3/4 board, that will be 4" (give or take for the carpet finish). Then I am only 11" from the botom of the screen, but the first row will still be the 13" from the bottom.

Given that I need about 1/3 from the bottom of the screen for viewing, I eyballed up that I will (me personaly) be about 44" eye level. 1/3 of the screen would be about 19.7" and 19.7 - 44 = 24.3" is what I need from the floor well above the 13" I have.

Option B:
With that said, if I come out about 12" (finished) with my wall I can clear the drain and gain back 7.5" this will make my figures come out to 21" which will be closer, but I will loose 1 foot off the length of the room. And the screen will be up close to the ceiling. Then I am not sure if my projector height will be right as the projector should be about 7.6" from the ceiling to the projector (lens) to the top of the screen. and the soffet around the i beam and return/supply duct will reduce my height in that area to at least 10" giving me about 6'7" height there to mount the camera. (No tall people allowed) ;-) The camera distance leaves the area below the i beam and air ducts for placement.

Now with the depth, Finished area of room will be (Option A) 12'9.5" x 24'11.5" (Accounting for the 4' I will be taking for storage at the end of the room. It has a sump pump and need access to it).

Option B will give me about 23' 11.5" I may be able to squeeze an even 24' out, so I don;t know I am very frustrated, and should I know have come here first before ordering but is it going to make a big difference if I go either way?

I am open to opinion and suggestions please.

Carl
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post #18 of 345 Old 07-17-08, 01:28 PM
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Re: New basement HT Posting progress photos

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... Finished area of room will be (Option A) 12'9.5" x 24'11.5" (Accounting for the 4' I will be taking for storage at the end of the room. It has a sump pump and need access to it).

Option B will give me about 23' 11.5" I may be able to squeeze an even 24' out, so I don;t know I am very frustrated, and should I know have come here first before ordering but is it going to make a big difference if I go either way?

I am open to opinion and suggestions please.

Carl
I think you can make it work ... I'm assuming your "sweet spot" will be in the front row, Right????, in that case the second row won't get the best of the sound (but if you won't seat there, let your guests miss some of the audio ) ... Bryan is right (he is the expert on accoustics ), on my HT the second row is just one feet from back wall, I did some test with REW and the sound changes there, but I'm able to save in my receiver different setups ... so I saved one for the best spot in the front row and another for the back row (even if is not the best option, we have to work with what we have )

I said go ahead, make the front row your sweet spot and loose a little in the back row.

Remember to use the calculator for the riser, the screen distance from bottom to floor will help determine the height of the riser ... here is the calculator http://www.theater-calc.com/riser.cgi ...
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post #19 of 345 Old 07-17-08, 02:17 PM Thread Starter
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Re: New basement HT Posting progress photos

Next question is speaker placement. Then I need to place my IR Repeater somewhere up front, its a wall plate I plan on painting the same color as the wall. Would you place this under the screen close to the center channel or to the left or right of the screen. Possibly on either side wall, but I do not know the dispersion that it will accept.
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post #20 of 345 Old 07-17-08, 02:21 PM Thread Starter
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Re: New basement HT Posting progress photos

My contracted called me today finally, so maybe this project will get rolling soon and I will have some construction photos.

Last edited by akakillroy; 07-17-08 at 02:26 PM.
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