is this right

[ToNasty]

its a center console box for a sa12. rear firing sub and rear port. the only reason i ask is because the sub says 1.75-2 cubes. Now is that gross or net volume.? i have the gross volume at 2.6 cubes and with the port displacmemt and sub displacment , the net volume is 1.9. is this right

[Neckbeard]

you dont include the port volume in the total volume

[ToNasty]

so im way off then.

[Neckbeard]

haha, no need to take it like that. but ya. just make sure to include the displacement of the port (the wood) and all the braces and what not

[ToNasty]

see thats what im not sure how to do. i just got torres and i dont really understand port displacment . i have only built sealed enclosures

[Neckbeard]

look at it this way. If your building a box, say the sub requires 3cubes. The sub still needs that 3cubes, and the sub puts a displacement of .5 cubes and the port provides .75 displacement. so your box needs to have 4.25. BUT the you need see the air in the port as a solid, so you dont need to include it in the total cubes. If that makes sense?

[ToNasty]

yes. so i got it down to 2.1 cubes. displacement of the sub and baffle for the port ads up to .21. which leaves me with 1.89. am i correct?

[Neckbeard]

yes. So you need to increase the total to 2.31

[ToNasty]

why is that

[Neckbeard]

how many cubes does your sub need?