2 l7 12s box help

[bbrownderville 10+ year member]

I am looking to build a new box in my colorado for 4 12in. L5s. i am gonna be taking the backseat out this weekend. The box limits are 50 wide x 20 tall x 20 deep. im wanting to tune around 40hz(i know its high, but i want it tuned high so i can compete a lil and then still have some good daily bump). how should i do the port and stuff? any one got any good box designs? this will be going into a 07 colorado crew cab

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[dkmesa 10+ year member]

I would tune it between 34-38 if it were me.

Beyond that, search for box designs

 

[rpfuror 10+ year member]

Heres one I built for a forum member. I can design you one if you give me your MAX parameters. This one was built to kickers specs.

http://www.caraudio.com/forum/showthread.php?t=200869

 

[bbrownderville 10+ year member]

bump to the top with new measurements

 

[rpfuror 10+ year member]

Here you go:

Desired Tuning Freq: 40 Hz

Width= 50.00 inches

Height= 20.00 inches

Depth= 20.00 inches

Port Length= 3.52 inches

Driver Volume= 8.99 cu/ft

Let me know if you want a drawing.

 

[rpfuror 10+ year member]

here a pic'