Attempting first box

[darkdrake 10+ year member]

im back again and this time im attempting to create a box for my two s12l5 to fit in the back of my cavalier. but im not good great or anything at designing a plan... and was wondering if any of you could help meaning this is my first box.

ive got dimensions:

30 1/2 width

12 depth

13 1/4 height

i would really love this to be vented and tuned somewhere about 37-40... but i have no clue how to do this... i would post my diagram so far but im telling you its very pathetic.

Click to read more...

 

[darkdrake 10+ year member]

here ill post my cruddy plans anyway... dont laugh to hard....

 

[jacko 10+ year member]

alrite... are the measurements accounting for the size wood your using? what wood are you using by the way? 1", 3/4"? I assume you are going to have a divider in between the airspaces? Venting: is this the 02-04 model L5's or the new 05's? go to the kicker website and look at their maunuals, or look at the ones on the kicker website. In them it tells how big the port opening needs to be, and how long it needs to be. length is done by just putting a piece of wood that just extends the port opening, but the inside port area can be no bigger in hieght and width than the port opening. okay does this help?

 

[darkdrake 10+ year member]

02 model l5's and im planning on using 3/4 mdf. divider im not sure yet. but more than likely meaning i have 2 ventes and i dont want the subs pshing against each other. but i still dont understan the port part.

 

[SPL140.2 5,000+ posts]

02 model l5's and im planning on using 3/4 mdf. divider im not sure yet. but more than likely meaning i have 2 ventes and i dont want the subs pshing against each other. but i still dont understan the port part.

Why not have 1 large port and the end?

 

[jacko 10+ year member]

okay to determine port size, you first have to figure out your box size, taking into account the airspace the divider will take up(the divider is good also for structual integrity... i reccomend it), and the wood size, and the volume the back of the sub takes up. Then we figure out port size. altho it would be much easier to make a big middle port, you'd have the actual ports be acting as the structual support.

 

[darkdrake 10+ year member]

so im guessing one big vent in front would be the best

but how do i figure the measurements.

 

[darkdrake 10+ year member]

bump please help im a newb i admit this but i thought of 2 more questions.

1. is building your own box cheaper than buying one.

2. can someone help me with diagrams as you can see im not the best renderer

 

[bcarpenterfhl 10+ year member]

bump please help im a newb i admit this but i thought of 2 more questions.
1. is building your own box cheaper than buying one.

2. can someone help me with diagrams as you can see im not the best renderer

yes, and probably, just as long as you post all the dimensions.

 

[darkdrake 10+ year member]

i did that already my dimensions are:

30 1/2 width

12 depth

13 1/4 height

right?/

 

[swimfreak26 10+ year member]

I do designs, so does bcarpenterfhl, they run $10 from me at least ( I think about the same for him)...figuring out vent length and proper size is quite a bit more complicated than someone can just explain in a few words.

To answer your questions though. As long as you've got the tools, it is generally MUCH cheaper to build your own box. MDF costs about $20, $5 for some screws and glue, $10 for some carpet, $10 for a design and you've got just under $50 wrapped up in a box that would cost $250+ at most shops.

PM me if you're interested.

 

[darkdrake 10+ year member]

ok im not sure about this but i was thinking that maybe something like this might fit me best it looks like the same dimensions and idea i had to begin with tell me what you think and can someone please tell me what this box is tuned too.

http://www.sonicelectronix.com/item_2908.html

 

[bcarpenterfhl 10+ year member]

tell me your sub displacement, and i'll figure it out real quickly

 

[darkdrake 10+ year member]

displacement???

 

[darkdrake 10+ year member]

could you explain displacement like can i find it in my manual