Originally Posted by audiovideoholic
First off forget budget name brand subs all together. A good sub from a reputable brand will be a few grand minimum. Just build yourself one or two and plan to upgrade lol. It's never ending with subs or at least around these parts it isn't. For your size room a tuned sub or horn loaded sub should give you quite a bit of output. And remember placement is key, well after 2,3,4,5,.... that is. Seriously. I'd start out with either two vented 18s or one horn loaded 15-18. Getting down to 15-20hz with vented is a lot easier than loaded when all things are considered, eg- space, ease of building, placement, WAF, etc.... A clone amp would be more than enough to start off with and probably can find one here in the classifieds.
Plan for more dedicated circuits than you ever plan on using. Can never have too much power on tap.
Run conduit everywhere you think a possible future speaker/cable could be needed and put a couple pull strings in them.
I wouldn't want that back row so crowded personally. How many people will be using the theater regularly? Plan for that amount and see what the optimal layout should be. If need to switch the room 90* way you can get that extra seat in there if will have that many regularly. Bean bags and cheap folding chair/table sets come come in handy when extra seating is needed for that once in a 3-4 month period. You would be surprised how many folding chairs can be cramped into a space when seating is sparse.
If switch the room 90* the surround sides/back/width channels will sound better than being overly close to them. That's one of only two things I would have done differently on my build. I would have built wider and higher. A down side is PJ throw being shorter but with today's options that shouldn't be a problem. Just a thought.
You have a nice little space to work with and can make it quite nice if plan correctly.
Yeah, a few grand is out of the budget for a sub, and I barely have time to work on the theater, let alone build a sub. I have looked into it, but not sure I'm there yet. This whole project is because of the WAF. My current room is getting taken over my baby toys, and little ones like to pull cables. She is getting a dedicated play room, and I get a theater. I also can't watch anything over -35 because the room is right next to the nursery, hence all the soundproofing. I still doubt it is enough to hold in any of those subs at reference levels.
I have already found a problem with the big subs. I am planning a 120" 16:9 tab tensioned motorized screen. Most of the time i would keep it in a 2.35 ratio, but could extend it for big TV events. With my finished ceiling, I will only have 78" floor to ceiling. The screen comes down about 62" from the ceiling, meaning my sub can't be taller than 16" or it will be blocking the screen. Most of the 15" subs are 18" wide, so even laying them on their side they would block the screen. I guess I could place it along the side of the wall, but if it is a dead spot, I don't have a lot of options to move it. I'm thinking I might start out with two SB-2000's to start things off, since they will tuck in nicely under the screen.
I am also thinking three dedicated circuits, two by the equipment rack, and one for the rest of the room. I am planning on running conduit as much as possible, and running multiple HDMI and Cat6 runs.
I thought about the 90* turn, but the two projectors I have been looking at, epson 5040 and sony 45ES, both have a throw distance of 11' or more.
The wife asked why I needed to bar in the back too. "How often will you have that many people over?" That will be a later add on, if needed.
Thanks for the advice!