View Full Version : finally a design... hows it look?

07-05-2006, 08:36 PM
ok, so i have finally came sat down and sketched out what i am going to build this weekend for my subs. its will have external deminsions of 40" wide x 21" tall x 26" deep, which i calculate to be 10.64 cubic feet internally. after removing the sub displacement(0.1 cubic foot each), leaves me with 10.44 cubic feet internal. i then figured that the diving wall(to chamber off each sub) .75 x 21 x 26, will take an additional .23 cubic foot away, leaving me with 10.21 cubic feet.

the only thing i now need is help with the port, i know this is about the 394857834th post about ports by me, but i really want to understand them. i just would like to know what size port(slot port) i need to tune each side to 33 Hz, and more importantly, how to figure it out.

thanks for everyones patience with me on this.

07-05-2006, 09:12 PM

07-05-2006, 09:43 PM
http://mobile.jlaudio.com/support_pages.php?page_id=165 theres a lot about ports there

07-05-2006, 10:33 PM
ok... im really trying here... do these look correct?




if you're wondering about the third one, im subtracing the volume of the internal brace to seperate the box into two chambers

07-05-2006, 11:03 PM
what program is that?

07-05-2006, 11:06 PM
bassbox pro 6... im new to ported boxed, and i hope im doing that right... there are nothign but port geniuses floating around here, i know someone will kindly take a look at the figures and see if they seem right for me, pleeeease, haha