Sealed box for TS-W2000SPL

[Jonahdude]

I'm about to buy a Premier TS-W2000SPL subwoofer, and I'm not sure how to build the box. www.pioneerelectronics.com recommends 1.5 cu ft, but is that before or after displacement? It has two voice coils... do I need two terminal cups? How would changing the box size affect the sound? Should I use polyfill? I need to caulk the inside, right? How should the sides overlap? Blah blah blah? Blah, blah blah?

I'M SO CONFUSED! HELP ME!

[Matador]

dont lose notihn by sealing the inside.
box should be after displacement. 1.5cu feet is pretty big for sealed than usual
only need one terminal cup
box size: the larger, the less power it needs, n viceversa. it would affect sound too.