Help with Box Info.

I have no idea what half this sh*t means...so if Sr20 or Haibane or anyone else could help me with the info for my sub on this page http://www.mtx.com/caraudio/archive/T8154A.pdf thatd be great. Im mostly wondering which enclosure and such of those listed would provide the highest DBs, by looking at that info. I cant convert that info into reality, so any help would be possible. I almost want to stay sealed though, cause the box I have barely fits in the back of my Neon, and if I were to take the dimensions of it you could probably tell me if its ok or not...right? Thanks.

All those numbers are called Thiel Small parameters. Those numbers are what is needed to properly design the enclosure. Now scroll down on that page it gives you info for some boxes designed by MTX. The box I would choose for SPL would be the 2.5 ported enclosure. Or the 2.00...comes down to space available. There are designs there for larger lower frequency enclosures but if you plan to use this everyday you will not likely enjoy those enclosures. Also they get very big. Even at 2 cube per driver that is not a small box.

Yeah Im sure I would stick to the sealed boxes then. High SPL never sounds musically good does it? Im assuming that since the comp CDs are usually only single tones and such.

Well what "sounds good" is a matter of opinon really. Personally I like the sound of a sealed enclosure when it comes to sound quality. But I have built and heard many good sounding ported enclosures. Both enclosures have ups and downs. One of the most benificial points of a sealed is the size. But a ported enclosure will yield more output and handle more power. It is a give and take and comes down to what you like. The most important thing is really that whatever enclosure you decide on is that it is built correctly.

each enclosure type has strengths and weaknesses ... most ported boxes get a bad name cuz they were not built correctly

Yeah... I honestly can't build a proper ported enclosure, but I don't think you can get the perfect accuracy I really want from a subwoofer from a ported... could be wrong

I dont have the money to be doing experiments with different boxes, yet that would be fun. Which of those sealed boxes on that list would be best for the subs...and I have the 1501D amp that gives them, according to the test wattage...555 a piece. I was wondering what polyfill might do for it too since I have good wattage for those subs now.

polyfill is only needed when you want to make your subs "think" they are in a bigger enclosure than they really are. Most people use polyfill if the sub needs a 1.25 enclosure and they can only fit a 1.1 enclosure. Polyfill is then used to try to get the enclosure up to 1.25. There is a mathimatical formula for how much to use but I do not know it.