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Please help: Room size?

Hi,
I'm going to build a room for hometheater and music in the next two weeks. However, I'm having problem to decide the room length. The new room will be 8'H x 10'W x 17' to 22' in length.
The room will be in rectangular shape, and I can't change the height and width of the room. If I go with 22' length, I'll save a lot of money because I don't have to modify the room a lot.
So, will 22'L x 10'W x 8'H be ok? What's kind of problems should I expect with the sound (base problem???)and is there anyway to fix the problems? Please help.
Thank you very much.
DT
worldcup86
bufus
149 posts
 
I think you should go with 22 feet length. It's a big benefit that it will save you time and money, but even if that weren't the case, you should still go with 22 feet. If you put the speakers on the short wall, you will really need to put good sound absorption at the first reflection points on the side walls. Also, the speakers should probably sit about 4 1/2 feet off the rear wall.

If you center the speakers on the long wall, you won't have a problem with side wall reflections but you will not have good depth in your soundstage because your speakers will have to be so close to the rear wall.

Go to

http://www.cardas.com/insights/index.html

and click on "Room Setup"
sean
6,231 posts
 
What type of speakers do you have or intend to run ?

Personally, i'd rather see you go with something around 19' long if you plan on placing the mains on the short wall. While i think that 10' is too narrow ( you'll need MAJOR room treatment ), especially if you plan on using a center channel speaker or have large floorstanders, 19' would work better than 22'. This would allow you to build suitable component racks into the wall and sink your big screen TV ( if you have one ) into the 3' false wall. You have now gotten rid of the "clogging" in the soundstage and imaging "artery" that lies between the mains AND reduced the potential for reinforced room nodes. 17' would also work for doing this and allow more room to work behind the wall in terms of plumbing the electrical cables that connect the components, but it also eats up 2 more feet of space. There are a LOT of things to consider, so take your time and don't jump into something that you didn't plan for. Sean
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worldcup86 OP
68 posts
 
Hi,
I have a JM Lab 926 floors standing speakers that can go down to 35Hz.
Like Sean said, I'll make the room 22' but I'll build a entertainment center that is 2' deep plus 2' free space on the back of the entertainment center. So, my new room will be 18'L x 10'W x 8.5'H.
Do you think the new dimension is ok? How far should I put the main speaker from the entertainment center, and from the sidewall? I need to know roughly where to put the main speaker so that I can decide where to place the main door that won't hit the speaker when I open it.
Thank you very much.
DT
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