After seeing you and a few others get the seats I cant believe it took me this long lol!!!and with that said I am leaning more towards the additional HT seating since the new room will support 2 or 3 more but with that a riser is needed . Ahh!! you picked up on the couch reference, yes I spent some time childhood in the Brooklyn area and I still spend alot of time there working.
That new space you are getting sounds massive are you green gluing and whisper clipping this room for sound?? I was not able to do my room as part of it was built already but I am making some changes to help.
Just out of curiosity, what changes are you currently making to help with the soundproofing? But alas, here's the deal with soundproofing the rooms. The 11x27 room is unfinished, so I can do the whisper clipping and green-gluing to my heart's content (this is actually one of the reasons I hope to be able to use this room.) The 27x18 room is already finished and would also be impossible to soundproof unless I build a "room within a room" because there's an opening to the right into another section of the basement. I'd like to avoid using the uber-large room if I can, but if I can't make the 11x27 room work (which is probably unlikely--it's just so narrow), then I'll be going that route.
I don't know if you are planning on using any kind of "consultant" to assist in your room design and I am not suggesting you should or should not. But, you may want to do some research on room sizes.
The theater I am in the midst of building started out at 19'3" by 27 feet and it is now 19.3" x 22 feet. If you have never used one of the spread sheet programs to determine what frequency issues you might have, I recommend it. I am attaching mine which started out as one from SGTHT. There are those who don't buy into these programs but I am not one of them. The concept of this program is that if two modes are within 5% of one another ( Bonello) then that is a bad thing. At the top you enter the length, width and height and the graph at the bottom will show you the problem frequencies and you can also determine which dimensions of the room are involved.
Multiple subs and very much assist with the lower frequencies but not above those frequencies.
Use (play with) at your own risk.
GerlachRoom.xls 83k .xls file
PS: The 4.5 feet I took away from the room (1/2 foot used up by studs and double drywall) will contain all of my equipment as well as the back part of the enclosure of the center speaker (and storage for my media)
Man, I planned on hiring a acoustician and a theater design consultant initially......and then the down payment and closing costs were placed before my eyes and everything changed. lol...I definitely appreciate the info on the tool; I'm going to explore this extensively. That research could make things much easier too, as the better room dimensions will help me make the best overall decision. I'm going to follow your new thread very closely (after I scrub the drool off my desk from your first thread) and hopefully I'll be able to learn some things from your build. Thanks again, Chuck.