Enclosure Design & Construction Help Post and discuss your car audio box construction, design, fiberglass and other fabrication questions here.

box with 2 ports?

Old 08-04-2007, 05:51 PM
  #1  
500 Watt CAFz'r
Thread Starter
iTrader: (16)
 
splescort's Avatar
 
Join Date: Feb 2006
Posts: 612
box with 2 ports?

hey all i am building a box for my 10" sub. i am gonna slot port it.
but i want to have 2 ports one on each side of the sub.

so my question is how do i design the box. is there such a thing of to much sq of port??? i would guess that each port would have to be the same. and is there any advantages of doing this?
splescort is offline  
Old 08-12-2007, 12:16 PM
  #2  
2000 Watt CAFz'r
 
maltesechicken's Avatar
 
Join Date: Jan 2001
Posts: 2,025
Get a boxbuilding program and it will help you determine the length of the ports
go to
www.linearteam.org and download winisd.
Win ISD allows you to adjust the number of ports, & shape of ports to your liking and then tells you how long they need to be and the cubic volume of the box.

If done right, there should be no problems with twin slot ports - just make sure that the box is the right cubic feet - cubic feet nneds to be calculated independant of port volume - the space the ports take up do not work towards the airspace that the sub is working with. Since you are looking at twin slot ports, you will need to consider this as they will likely take up a larger than average amount of port space.
maltesechicken is offline  
Old 08-13-2007, 09:08 PM
  #3  
500 Watt CAFz'r
 
Join Date: Oct 2004
Posts: 870
Multiple ports require slightly more length due to the increased friction, than a single port of the same area, and if in doubt, aim for a bit higher frequency.
Otherwise it sometimes looks better.
JL have some in-depth tutorials on the subject of slot ports, wall effect, and multiple ports.
http://mobile.jlaudio.com/support_pages.php?page_id=165

Last edited by Starterwiz; 08-13-2007 at 09:15 PM.
Starterwiz is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
05colorado
General SPL
3
04-07-2006 09:47 PM
sleboda
General Discussion
5
04-01-2005 04:37 PM
Juggernaut Sportage
General SPL
6
10-11-2004 12:38 PM
KingRukus
Enclosure Design & Construction Help
2
08-28-2004 01:27 AM


Thread Tools
Search this Thread
Quick Reply: box with 2 ports?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.