View Full Version : Box for 4x 8" JL Audio W3's Ported @ 36hz

03-22-2010, 08:59 PM
Have a customer that wants a box for 4x 8" JL Audio W3's.

Heres what i came up with


Port is 3X13X21.75

Equals out to be 3 cubes after all displacement.

They are going in a civic trunk so im just doing this subs back port back.

Let me know if all looks good :)

03-22-2010, 09:55 PM
How is your port opening 3"x13"? Are you not using any of the walls for the port? I figured the box would be 14" tall and the port would be 12.5" or something...and you have 3.51ft^3 before any displacement.

03-22-2010, 09:57 PM
Looks like the box will be closer to 2.5ft^3 after displacements and tuned in the upper 30's.

03-22-2010, 09:58 PM
nvm reading > me

03-22-2010, 09:59 PM
nvm reading > me

What sides of it have MDF taking up space in the box?

03-22-2010, 10:00 PM
nvm reading > me

it's cool

03-23-2010, 01:00 AM
Hey sorry,

its 14.5 tall 16 deep and 35 wide.

so interior would be

13x14.5x33.5 = 3.65cubes

port = 13x3x21.75 = .49 cubes

3/4 MDF is being used for this

03-23-2010, 01:12 AM
3.65ft^3 gross
-.59ft^3 for port(13"x3.75"x21" is what's actually inside the box, right?)
-.25ft^3 for subs
2.81ft^3 net

Then you have to factor in bracing if you're doing any. But yeah, pretty close. I thought the subs would take up more space, that's why I said close to 2.5ft^3 in my first response.

03-23-2010, 01:14 AM
hmm maybe ill add another inch onto the height i didnt think the subs would take up that much room but i guess there are four of them. And yeah thats interior dimensions of the port