Help with making a box for 2 18" SMDs

[Jagraj7870]

so i wanna fit 2 18s in my jeep wrangler i currently have 1 right now, i wanna be able to do hairtricks easily and also to hit around 150dbs

heres the box idea i came up with

im gonna be powering it off a Kicker warhorse and i wanna be able to hair tricks

if someone can help me that would be appreciated

each SMD will be getting 5000 watts

[RAM_Designs]

The SMD's work well in smaller boxes, and you have a ton of power on tap, so you reallymight not need that large of a box. And I would also try to double-up the entire box...maybe flush mount the subs as well. Those port specs are wrong as well. Four 6" aeros in an 11.5ft^3 box are going to need to be 22.5" long each to achieve a 32hz tuning.

Edited March 13, 2011 by RAM_Designs

[RAM_Designs]

I figured out why it's suggesting 17", because it's finding port length based on the GROSS volume before any displacements, not with the NET volume after all displacements(14.6ft^3 vs 11.5ft^3)...a very big flaw to have, especially in a calc that other people are using to build boxes. Torres needs to find out a way to fix this, and quick.

Edited March 13, 2011 by RAM_Designs

[Jagraj7870]

can you suggest me a box using my dimensions this port thing is so confusing i thought if the port area was within the port range your good

[RAM_Designs]

The problem I see is your depth limiting the amount of port length you can use. If you want to use four 6" aeros they're going to be too close to the back wall once installed. I came up with something that's 9.5ft^3 with a 33hz tuning, doubled up all around, but port length needs to be 26" each.

Edited March 13, 2011 by RAM_Designs

[Jagraj7870]

the max length of the aero ports is 17inch

[RAM_Designs]

the max length of the aero ports is 17inch

You can make them longer using your own thin-wall PVC, which you're going to have to do...you could do a slot port, but it would take up too much volume.

[RAM_Designs]

And actually, if you want to just do a double baffle and have it one layer everywhere else(with adequate bracing), you can do something like 11.5ft^3 at 33hz with 21" long ports. That will give you 4.25" from the back wall once installed, which is fine for an aeroport.

[Jagraj7870]

And actually, if you want to just do a double baffle and have it one layer everywhere else(with adequate bracing), you can do something like 11.5ft^3 at 33hz with 21" long ports. That will give you 4.25" from the back wall once installed, which is fine for an aeroport.

the bracing im gonna use is gonna be a 2x2 steel tube and also ima resin the inside and make the 45 degree angles

but you keep forgetting the max length of the aero ports is 17"

[RAM_Designs]

but you keep forgetting the max length of the aero ports is 17"

I said before that you're going to need to make them long by going out and buying your own thin-wall PVC...contact psp-inc about getting just the flares and coupling rings, and buy the PVC yourself. 17" port length is going to give you a 36hz tuning.

Edited March 13, 2011 by RAM_Designs