First time builder needing help

[bmd107]

I have a box that I am building tuned to 30. Its outer dimensions are 36 in. wide 18 in. tall and 15 in. deep. My port is 16.5 in. tall 2.5 in. wide and 29 in. long. This is for a PG Ti15d. The speaker disp is .2 cu ft. My question is did I do the figuring correct. This is my first box and I would rather have it correct before I get to cutting. All help is appreciated.

[ramos]

My turn to ask a question :D How thick is your wood for the box and for the port ? :)

[bmd107]

I will be using 3/4 MDF

[ramos]

Let's see here

your looking at net 5.01 cuft
minus .69 cuft port displacement
minus .2 basket displacement

for 4.1 cuft after displacement :)