Dumb Question: Where does the port begin?

[Jessica]

half way im surwe

With answers like this, you'll get to 150 posts in no time.

OP,

I would trust Joe x. He's got plenty experience with enclosures.

I saw that post and just chose to ignore it.

[Torres]

i think it's been mentioned, but just to reiterate: in a slot port, add half of the port width to the length of the port. that is the end correction that is added into port lengths that the sub will see. thus taking that small amount out of the net volume.

[Quiet]

What he said...