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Discussion Starter · #1 ·
Hello everybody,


I'm new to these forums, but I've been searching and reading them for quite a while. I'm in the process of building my house and I have a dedicated 20x20' theater room in the basement. I've drawn over the architecture plans my thoughts on how it should be built, but I'm coming to you guys for suggestions or gotchas or what the heck where you thinking



I'm attaching the drawing to this post but I'm looking specifically right now for:


1. Speaker system - I plan on using closed box bookshelf speakers built into the columns/pilasters with speaker grills. Potentially the Klipsch RB-61 II for both the front L/R and side L/R. I'm also looking for the center to be built into the wall/ unfinished window opening using the Infinity Primus PC351. Finally for the back I'm looking at doing Bipolar Surrounds such as the Klipsch RS-42 II. I plan on throwing a sub in one of the corners, I'm thinking initially the back left corner. I "think" I'll be ok with just one sub, let me know if you think otherwise.


2. Projector and Theater Seating - I plan on having a 1' riser with a set of Pallisar theater chairs. The front row I'm estimating to be about 9' away from the screen. The screen will be a cinescope 2.35:1 screen I'll DIY build with acoustic screen material. The back row will sit about 16.5' away from the screen. The back row will be at about a 38° field of view angle, while the front row will be at a staggering 68°. I'm a little concerned this will be too much but look to you guys for thoughts. If I shrink the screen size the back row gets even smaller.


3. Atmosphere - I plan on including a star field and "crazy led" rope lighting in the tray ceiling and also in the riser lip.


Anyways lets start here and see what suggestions you have.


Thanks!


Josh

 

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I think 68 degrees is too much, unless you never plan on sitting in the front row.


The recommendation is 2-4 screen heights so you want to be in that range for both rows. Your front row would be under 2 screen heights.


I'm guessing you will be sitting in the back row...do you need the front row? Seems like a waste. Put the money into equipment instead
 

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Hi Josh, I love the Imax feel, but even I think that 68 degrees is a bit too much. I would ditch the front row and have a slightly bigger screen for the back row. Or see if you can push the two rows back a bit for better angles.


Below is a viewing angle chart with the various recommendations for screen to seating distance.




Good luck, and I look forward to watching your build.
 

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If you intend to use reclining home theater chairs you only need to plan 6 1/2 ft chair back to chair back. That means you can move the front row back to 10 ft from the screen. That puts your viewing in the 4th row of that diagram.


It that was my space and I had to have two rows, I flip the room 90 degrees CCW, I hate walking in to the back of raised seating. You just need to deal with the door to the server room, Raise it to riser height and put a step down in the server room. Or eliminate it, you already have another door.


If you do one row, than walking into the back is better.


I would be tempted to figure out an alternative to the sever room and claim that extra space for the theater.
 

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Discussion Starter · #5 ·
Thank you all for the feedback. I do want to continue to have two rows of seating. I do think I'm going to move the whole riser back another foot. That would leave 2 feet for a walk way which is a little tight but I think it should work. My riser platform is 7 feet deep so this should give plenty of walking room when the front and back rows are reclined.


Unfortunately, there are not two ways into the server room. The other door drawn is a utility door for underneath the stairs. So rotating it is probably not going to work. Plus it is a load barring wall so it cannot be moved



Anyways if I recalculate the front viewers position at 10 feet, I get a viewing angle of 57.6°. The screen height at a 2.35:1 would be 11/2.35 = 4.68'. Keeping with the 2X distance would put me at about 9.36'


Does this seem reasonable?


Also any thoughts on using bookshelf speakers in a room this size, what about doing bipole surrounds in back of the room, any potential problems you see on speakers?


Thanks so much!


Josh
 

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Quote:
Originally Posted by GimpMaster  /t/1468321/new-home-theater-design-opinions-wanted#post_23204645


20x20' theater room

That's a gotcha right there - if possible, avoid room dimensions that are an even multiple of each other, as they will reinforce modes (peaks/dips in LF frequency response).
 

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Quote:
Originally Posted by BIGmouthinDC  /t/1468321/new-home-theater-design-opinions-wanted#post_23205040


It that was my space and I had to have two rows, I flip the room 90 degrees CCW, I hate walking in to the back of raised seating. You just need to deal with the door to the server room, Raise it to riser height and put a step down in the server room. Or eliminate it, you already have another door.

+1. I'm with BIG on that, too. If that door is needed, deal with it at riser-height and step down into the server room.
Quote:
I would be tempted to figure out an alternative to the sever room and claim that extra space for the theater.

+2. That's a big server room - you mining bitcoins?



Or is there other mechanicals in there you're not showing? Adding that length to the theater gives you more choices... Perhaps the area under the stairs is big enough for a rack? If the wall is load-bearing, replacing it with a beam should be possible, certainly at this stage.


Also, those pocket doors may look nice, but really are the worst solution for a theater. They'll leak sound in and out terribly, and will rattle like hell whenever that sub lights up...


Jeff
 

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Discussion Starter · #8 ·
All very good and valuable advice, I'll definitely be looking at how to rework layout.


Any suggestions on speaker setup? Or should I post to a different section of forums?


I'd be interesting in hearing peoples opinion on 7.1 vs 7.2 in this room size. The rear surrounds. Suggestions on speakers for a $2-3K budget for speakers.
 

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My 2c:

- I wouldn't go above 50 degrees viewing angle

- If you are going to hide the bookshelf speakers in columns I'd likely just go for in wall units. The newer ones from many manufacturers are pretty good and in my experience you can get better performance for the price tag than speakers designed to be placed out in the room because you are not paying for the enclosure.

- For consistent bass across two rows of seats you are going to need 4 subs placed in specific locations. 2 subs you can get consistent bass across each row but row to row the bass will be different.
 
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