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View Full Version : I need help on building a box for my 18



playyamxz550
07-10-2011, 11:15 PM
I made another post before nobody responded I wanted to build a box 7.5 cubic ft before displacement and tune it around 35hz and then add in everything which i no will change the tuning alittle now i got like 36L22H23W something small like that does that sound like a 7.5 cubic ft box, if anyone has any basic slot ported out the back sub facing up desigins, im also willing to pay now someone please get back to me

basscort2009
07-10-2011, 11:23 PM
its about 7-7.3 depending on how big of port you use and what u tune it to

GeekSquad
07-12-2011, 01:06 AM
What kind of 18 is it? You don't have 7 cubic feet there, no matter what box you build. Depending on the EBP of the sub though, you may be able to go with a smaller sealed enclosure and still get low bass.

playyamxz550
07-12-2011, 04:07 PM
its a dc level 4 xl and i dont do sealed lol

cheeseburger35
07-24-2011, 11:03 AM
What kind of 18 is it? You don't have 7 cubic feet there, no matter what box you build. Depending on the EBP of the sub though, you may be able to go with a smaller sealed enclosure and still get low bass.

are you really an idiot? or did you read a speaker book memorize some words and acronyms and think you can give advice now?

db138
07-24-2011, 11:21 AM
You don't have 7 cubic feet there, no matter what box you build

:confused: 36x22x23 is 10.5 ft^3

hispls
07-24-2011, 11:38 AM
:confused: 36x22x23 is 10.5 ft^3

10.5 gross. Figure a cube and a half for 1.5 sheets of 3/4 and bracing. Then knock out another cube and a half to 2 cube for port displacement and it's about 7-7.5 cube.

If you have all that space, use it. Keep in mind if you have the port too close to a wall inside your cabin it won't function properly. I could do up a cutsheet for you if you have EXACT outside dimensions.