what size box do i need?

i have called all the shops in the Richmond area and they say they haven't done any interchangeable ports and that it would throw off the tuning of the box what should i do?

well your best bet would be to build your own box.   I will post some pics of a varible port box later pn today when I can go out and take some2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

Anybody mind if I throw something in here? It sounds to me like you are interested SPECIFICALLY in SPL. If this is indeed the case, forget the transmission line. That is an SQ enclosure, exclusively. Having built several of them, three for the home and one for my '86 Civic, I can tell you with all certainty, you will NOT get SPL from one. They are designed for exceptionally low tuning frequencies, and do not augment the Fs of (pretty much) any SPL designed driver (woofer). Stick with the vented enclosure.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

well i know i dont want a transmission box  because i want a interchagleable port fo a DD/SPL set up, i contacted steve meade to see if he could help on this prob, incase yal dont konw who this is heres his site http://www.stevemeadedesigns.com/ i think yall should chek out the vids anyway

http://www.woodlawncabinetry.com/Resonant_Engineering_Custom_Boxes.html on this link the picture on the top right side has a stret/smaller port. on the left you can see where that inner port has been removed from a bigger port. the smaller port is just sitting on the top of the box for show Basically you will build your SPL port.   then build a smaller port to fit inside that port which is smaller in diameter and longer in length, but it will fit inside the bigger SPL port and will bolt into place. I hope this helps you out a little, I know Meade has done some interchangable boxes for his tahoe, I know he had one for finals 2 years ago. 2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

yea that helps alot, i might send them the specs once i get the sub i want. thanks man