Help with box for Dual 12L7's

[peridigm]

I am trying to build the maximum size box that will fit behind the rear seat of my caravan. I have two 12L7's/Dual 4ohm and a KX1200.1 amp. The pic below is an idea I came up with but I don't know jack about designing a box. The construction of the box is no problem, I make furniture. It's cuft, port sizes, etc that has me baffled. Could someone tell me if the design I have is shit, needs to be bigger, or whatever.

Each chamber is about 1.6 cuft. 13" square and 16.5 long. The ports are 2.5" wide. Basically the subs will point to the sides of the van, this is necessary to get the cross section of the box to fit in the space behind the seat. The port can go up, or front or back. I know it shouldn't go down but that is how the drawing shows it right now.

I hope the drawing is attached.

Thanks.

Click to read more...

 

[bcarpenterfhl 10+ year member]

what tuning frequency are you trying to acquire?

 

[peridigm]

Not sure what you are asking but I'm not competing. Just street base I guess.

 

[bcarpenterfhl 10+ year member]

yea man, you just cant have a bunch of wavy slots and expect the box to sound right. theres a lot of calculations involved with designing a ported box.

 

[Shyne151 10+ year member]

http://www.project04.net/2L7.pdf

try that...

 

[bcarpenterfhl 10+ year member]

http://www.project04.net/2L7.pdf
try that...

it looks to me like that was done on bbp6. i havent double cheked that design, but its almost never a good idea to let bbp6 design yuo a slot ported box. round ports it does fine, but not slots.

 

[Shyne151 10+ year member]

it looks to me like that was done on bbp6. i havent double cheked that design, but its almost never a good idea to let bbp6 design yuo a slot ported box. round ports it does fine, but not slots.

That's not a "slot" port of sorts it's jsut a square port, same way I did my box. Just like a circle port only square, well I did that one rectangular.