need help building a box.

[04prixgt04 10+ year member]

i have 2 subs they are cvr 12 2 ohm. the require a mininum of 1.75 sqft. the box they are in is

side to side : 2ft 8 in

top to bottom : 1ft 2.5 in

front to back : 1ft 5 in

port is 3in. wide

http://i455.photobucket.com/albums/qq271/ducatidrew/yep%20yep/IMAG0457.jpg

there is a pic.

if i want to add 2 more cvrs do i need 3.5 sqft per chamber since each 1 needs 1.75sqft or can i just cut two holes out on top of the box and be fine?

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[Buck 5,000+ posts]

You'd need a whole new enclosure. They will work better in more than 1.75 each.

 

[RAM_Designs 5,000+ posts]

You'd need a whole new enclosure. They will work better in more than 1.75 each.

Agreed

 

[04prixgt04 10+ year member]

what kind of program/calculator can i use to make a design for a ported box tuned at a certian hzt that will fit 4 12's .

 

[GeekSquad 10+ year member]

I just built a box for 4 of the cvr 12s for my co-worker in a blazer. The port was 100 square inches 12.5 x 8 and was 34 inches long. The box was tuned to 30hz. It plays low and LOUD

 

---------- Post added at 01:18 AM ---------- Previous post was at 01:17 AM ----------

 

Go to ajdesigner.com for a free vented box calculator plus all the formulas to do it by hand.