sps1989 Posted December 28, 2013 Report Share Posted December 28, 2013 I have 4 Sundown Sa-8 V2s that I am thinking about putting in a 4th order box and I have a few questions about how to design it. 1. Do I use the manufacturer's specs for the sealed part? 2. What is the best ported to sealed ratio for a box that I would like to have an output of 20s+ hz? 3. Would tuning the ported area to 45 hz give me the best range in frequency response? (Maybe 20s-60s or so) Link to comment Share on other sites More sharing options...
Akslowroller Posted December 30, 2013 Report Share Posted December 30, 2013 I am no expert as I have only built one fourth order box and had a member here design it. However I did read a shit ton before talking to sanitarium I think his name was. And from what I remember yes factory sealed spec and then typically double that for your ported side. I can't remember how he came up with port size but I know it was tunes to something like 47hz. It played really low. It didn't give me the sound I was looking for. But that was with 2 Orion 15's. May have also been the subs. I would recommend searching on here and reading more. Link to comment Share on other sites More sharing options...
matt14 Posted January 2, 2014 Report Share Posted January 2, 2014 I would get ahold of either Sundown or to get a good designer to get you a proper design. I have heard 2:1/3:1, but all will differ. 2006 GMC YukonPioneer HU SHCA ran throughout Crescendo BC3500 One 18 AA Mayhem in a 4th order ZED Levithian 6 channel Rainbow Dual 6.5 comps ran Activehttp://www.stevemeadedesigns.com/board/topic/155628-matt14s-yukon-mayhem-in-a-4th-ordernew-amps-and-bats/page-3 Link to comment Share on other sites More sharing options...
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