Jump to content
Second Skin Audio

ported box for (4) JL 12W7's


Recommended Posts

My friend is looking to put (4) JL 12w7's in a ported box in his 2003 Honda CRV. Each one running off a Slash 1000/1. 

I have a box drawn with the 12's mounted facing up along with the port facing up as well (his request).  I read along of threads with (2) 12w7's, and I can't quite get the 2.5 cuft that was recommended in them. 


I guess my question is about the port size and length. I can design a bridge fairly easy but I don't know enough about ports or box design to know what will work well. 


I've attached my sketch. Any help is greatly appreciated.  


Link to comment
Share on other sites

Since your tight on needed airspace for the subs, then you want to avoid a center port like that because that port will take up a bit more volume seeing as only 2 small pats of the box will be used for the port. 
Moving the port to one side of the box will use up 3 walls of the box as the port and allowing you to eliminate a bit of extra work while gaining some air space.

Also its worth mentioning that woofers up and port back is typically drastically louder in suvs.

This would be a bit better than what you have if you dont do sub up port back.





Link to comment
Share on other sites

You will need about 100-110 square inches of port area for those 4 drivers on rated power and a tuning in the mid to lower 30s and a net volume of 2-2.5 net per driver.


As for your box dimensions you should measure the trunk space yourself, besides your box height can be increased a little without breaking anything.

Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   0 Members, 0 Anonymous, 239 Guests (See full list)

    • There are no registered users currently online
  • Create New...