alright this is my first box im building and its sealed its a 2x4 mdf board. its for a 12inch cvr kicker. i think it needs 1.5 cubic feet. neways i made the height 20icnes, width is going to be 8inches, and the width of the front of the box is 16inches. this is a 2x4 wood and i need 2 more pieces of wood though for 2 more 8 inch panels, or should i get plexiglass instead

 

make sure the spk fits and does not fall trough

 

lol i mad the hole 10.4 inches

 

nice.
10char

 

by the way the dimentions are good. will 20" fit tough make it 16" square all the way round.

 

hmm makes sense, i think my trunk is 22 inches from the floor to the deck but i could also place it long way

 

the only thing is that shee i bought could only make 4 panels, should i use plexiglass for the other 2 sides? would it sound as good?

 

If you made sure the plexiglass was sealed to the wood properly, it probly wouldnt cause too much of a problem, and it could also make it look pretty cool. If its not too expensive, go for it, and if its expensive, just get s'more mdf.

 

well if you don't have the wood available just take one board and do a behind the seat deal where here it a ported box since the trunk is your box.

 

If it's your first box make it easy on yourself and make it all out of MDF. Leave the fancy stuff for later on after you've got more practice. Are you really sure you need 1.5ft^3 for a single 12? Seems kinda big. Where did you get this info.?

 

thats the original size for 12s.

 

and that plexi, unless you know how to work with it do it, but if you don't leave it alone. plexi does not cut like you think. never mind drilling trough it, it cracks and ****. its tough to work with.

 

i found the info on the sub on crutchfield. i guess ill buy some more mdf then. and tommorow or monday ill start cutting. later on ill buy some carpet

 

im deciding to make my box 20 inches wide and 14 inches high, the depth would be 8 inches. now my ques is, is this too big of a box for a 12? the bigger the box equals more bass right?

 

don't forget to subtract the thickness of the wood to find out the real interior air volume.

 

omg this thread is crazy. 1.5ft^2 is too big. sealed boxes are not as easy to design as you may think. i had the sub in 1.2ft^2......i recommend between 1.0 and 1.3ft^2 but no bigger....keep in mind that power handling goes down as volume goes up...a smaller box will allow the speaker to handle its rated power but go any bigger and power handling will drop.

 

so what to do,? how much inches in lenght, width, depth and height? for it to be 1.0 foot? make a 13 inch box all around? im confused and im not good at math

 

hmm think i could make a box like this eric lol http://polo.lxanyc.com/2002MaximaSE/AudioProject/SubBox/PortedBox(Take3)/sexy.jpg

 

if the wood was 3/4 inch then outside demensions would be 13.5" all around to equal 1 cu/ft box.

 

1.2ft^2? I thought we were working with volume here? LOL

 

im confused what to dooo???!!! so 13.5 all around?

 

wtf i did my math and i got 37450 cu ft 3 l x w x h x d rite?

 

WTF?! Man you need to convert everything to feet before you multiply the terms together. And it's Volume = Length*Width*Height. Right now you have 37450 in^4.

 

ok so to make a 1.0 box i must have 13.5 inches all around? even the depth?

 

How 'bout external dimensions 15x15x12, gives you 1.1ft^3 and avoids the perfect cube.

 

http://www.bcae1.com/
click on #110 and have fun.

 

Based on this 1^3 ft box design from eD, you need the following:
2 boards 20x15 (front and back)
2 boards 20x8 (top and bottom)
2 boards 13.5x8 (sides)

-Robert

 

man that box looks skinny, btw should i put cotton in the box to make it put out more bass?

 

Here's a great article by THE sub guru himself, Tom Nousaine - link. As for adding it to the box design, I don't know. I gave you a link to another site earlier that explained the relationship between box size and frequency response. Have you tried any of the modeling software like UniBox or WinISD?

-Robert

 

i tried bae1

 

ok so im going to get the fiber fill. uhm guys i did something stupid at homedepot when i went to go get my mdf, so uhn im banned from homedepot for a year. so i just want to know if sears sells mdf and filleruper thing

 

what did u do?

 

+1 How do you get banned from the Depot?

No, Sears will not sell MDF or polyfill...Try Lowes or other local lumber yards for the MDF. For polyfill try the fabric stores, it's used for pillow stuffing.