Hey guys i'm building my first my box for three fi bl 12's and want to tune it to 31-33 and was wondering which would be better? Sealed,ported, or banpass?? Any suggestions would be helpful

Ported.

Figure out your max dimensions and gross volume.

Figure out your max dimensions and gross volume.

Ported.

Edited October 9, 201212 yr by pmureika

would using sketchup 8 or torres box tuning help me out better and if so does anybody kno how to use it

ported for shure the bl's displace some air!!

You can definitely use torres calculator, then draw the design out in sketchup. I've never used the torres calculator, but it seems a lot of people have had good success with it.

You can also try this: http://www.bitpusher.in/?p=ported

It'll give you the net volume, and port length. You'll need to come up with the cutout dimensions.

would using sketchup 8 or torres box tuning help me out better and if so does anybody kno how to use it

Here is how to design in sketchup.