home theater sub enclosure

Simply by virtue of being placed close to the floor, you will have boundary gains. I think you will be very impressed with your overall response. While anechoically, you DO want a flat line as far to the left as possible, without any kind of EQ to tame the room gain, you will end up with a boomy response. The extension indicated by the left line will be ideal in a REALLY large room, but the larger the room to more accentuation you can end up with. I have a pair of 12" Gen1 Dayton Titanics in 2.2 cubes each, sealed, in a VERY oddly shaped room, with doorways on both ends of the room, with a plot that was giving me an F3 of (IIRC) 32Hz, but an ideal Q of right spot-on .707. In the room, I don't notice any flab or boom; it's a VERY nice response, but they'll still rattle the rafters if I ask 'em to. For the money you might drop on a pair of those six-bys, (for experimentation purposes) it'll probably be worth it for you. Give it a shot.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."