home theater sub enclosure

Yeah, I realize that is a fairly difficult budget.  Especially for the bass output I'm imagining in my head.  I was gong to get the 12"s super cheap, I might have to toss in a little more money.  Another thought just crossed my mind, 4 6x9s. 

I'm not really sure how any of these 'small sub' combinations will turn out, so if anyone has experience using smaller subs in the home, feel free to comment.

dont use 6x9's. seriously

Actually, the orange line is just right.  That is the response you want in your room.  The sub will be filtered at about 80 Hz and will slope sharply on the high freq side, so what you are looking at is a classic 6 db / octave slope from 100 Hz down.

Take a look at this Tang Band or some of the other offerings at Parts Express.

Edited to say, I just looked at the link in haemphyst's post...TB as well.  How 'bout that?

Funny, thats exactly what I was looking at when I made that post. =P 4 of them together might have decent output, but I don't think I can get myself to except those $ for some 6x9 subs, so its not likely to happen.

I don't understand why I would want a 6 db / octave slope from 100 Hz down on the subwoofer.  Am I missing something here? =D

My problem is more about the width of the area, not the depth.

Yes, what he said.  If you were to complete the design and build with such a slope and then tested response with an SPL meter, you'd likely find somewhat of an increase at the ~40 Hz region and probably less than -6 db/oct below that.  Your room size, being small, will provide more gain than a large room would.

Keep your eye on woofers designed for home use, not car subs.  There are bargains to be found.

I can see the logic in that.  Thanks for the input.

Now, I'm about to argue a couple points, not because I think you guys are wrong, but I'm always up for learning something new, and this brain of mine always has plenty of questions to go around.

I guess the only real 'arugement' I have to that, is the fact that it seems the ideal enclosure for HT would then be sealed.  From the little I've read about it, it seems ported is usually desired, and most of the home subs I've seen are in fact ported.  Should I just be tuning it different, with more slope, rather than a flat line?  I thought the flat line was desired, and the port does help take that 'flat line' a little farther to the left. but like I said, I do understand what you guys are saying.  I guess without measuring the acoustics of the room it will be somewhat difficult to accurately predict the bass response. 

Concerning the size size of my room, and general expectations for room gain, well, I think this room is fairly unique and I dont really know what to expect.  3 of the 4 corners are basically hallways.  The fourth corner is a door way.  Looking at the wall with the front speakers, immediately to the left is a bar, that is open to the kitchen, then a hallway, and to the right is an opening that leads to the kitchen.  Basically my point is, this room is full of holes, and I'm having this feeling all the bass is going to 'leak' out, and I might not benefit much from the room gain.  Of course, maybe it won't make a difference and I'm making this all up in my head!  I wouldn't mind hearing some thoughts on how these 'holes' in the room might affect the bass response, or room gain.