View Full Version : CAN'T get my box measurements to add up

06-05-2010, 12:25 PM
ok guys this is going in a tahoe. It's 2 type-r 12" sub's, which i wanna do a box crx style for. the subs on top and the port facing back towards the tailgate. so here's the problem, with winisd i figured a port with 14 sq. in's of port per cuft. (2.6 net box) will equal a displacement of .693 cuft. the subs together are a displacement of .142 cuft. , so if you add that together i need a box of 2.742 gross cuft. how the hell do i fit the port in my max measurements? my max measurements are 48" across X 19" back X 20" high.

sorry for the book i just wrote

thanks chris

06-05-2010, 01:25 PM
Pay someone to give you a design, use one of the inaccurate box calculators, or study (http://www.caraudio.com/forum/enclosure-design-construction-help/414622-how-design-ported-box-using-pencil-paper.html). You can also beg for a free design.

06-05-2010, 07:45 PM
U have all that room to go with and u only figure 14" per cube?? I would go for way more than that.

06-05-2010, 08:33 PM
i know i have all the room i just don't know where i am figuring wrong. i'll beg for a free one.

06-05-2010, 08:45 PM
2.6 net for both subs?

06-05-2010, 10:05 PM
alpine recommends 1.3 per sub

06-05-2010, 10:15 PM
Since you have plenty of room id go with atleast 2 cubes for each sub.

06-05-2010, 10:28 PM
you would know better than me so, i am going to go by your advice mazda.

06-06-2010, 12:08 AM

06-06-2010, 12:10 AM
mazda fixed my problem.

06-06-2010, 01:57 AM
so ur good now?

06-08-2010, 11:07 AM
yeah, just figured on 4 cuft. net instead of 2.6cuft.