ok well that last post of mine was irrelevant! haha sry but what you can do it this bro...... instead of a traditional ported box roll with a tapped horn!
do everything this guy has done! u wont be disappointed!
I would advise against having no SSF in HT unless you're running sealed. Even mine tuned to 16 hz bottomed out occasionally with SSf set to 16hz, so I now have it set to 20 hz and don't have that problem anymore.