Please help: Room size?

Hi,
Should I do a this kind of sloped ceiling? The room will be no slope for 8' long and then it starts to slope for the rest of 14' long (8' is the lowest and 9' is the highest).
Like I said, my new room will be 22'L x 10'W. For the non slope session, the media center is 2' deep and I leave 2' open space behind the media center. I plan to place my speaker 4' from the media center. So, the main speakers will be placed right on the place where the ceiling starting to slope.
Is this safe with this kind of slope? or should I go all like normal with 8' ceiling height for the whole room?
Please help. Thank you very much. DT
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I'm not familiar with your particular speakers. With that said, I usually prefer speakers set up along the long wall. While moving your entertainment center back from the main wall will probably help soundstage due to early center side reflection elimination, having an open cubby may(?) effect inroom bass response. Videophiles usually recommend bringing the monitor (standard) out from the back wall and having some soft light reflecting off the back wall behind the video monitor. Our eyes were designed to see reflected light not direct light, so this will ease eye strain. The area behind the monitor (and ideally the whole room) should be a neutral grey color to avoid apparent color abberations. Am I correct in assuming that you are planning on a two channel home theatre sound system?

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

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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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"