well, my problem started a couple of weeks ago - i'm trying to design a
sub's enclosure...
the sub is SPL's splw-12 (a 12" 2200W sub).
i am trying to stick to the manual's specs (they recommend a 2.4 cu.ft with
dual 4"x16.75" ported enclosure ), and even if i disregard my physical
limitations, i can't seem to find valid dimensions to a real enclosure...
the physical dimensions of the sub itself and the tubes for the ports
allways lead me to a total volume equal or greater than twice the
recommended one.

what do i do ? am i too stupid for calculations of this kind or it is just
that i miss something ?