tehbert0 Posted August 31, 2009 Report Share Posted August 31, 2009 how do you go about calculating the length of them http://motorcitydesignsaudio.com Link to comment Share on other sites More sharing options...
herbykw Posted August 31, 2009 Report Share Posted August 31, 2009 how do you go about calculating the length of them Im also curious about this. 06 300C 5.7 Hemi K&N CAI JVC KW-AVX640 6.1" DVD DC Audio 3.5k 6 DC Audio 8"s 6 cubes 8" aero port at 32hrtz http://www.stevemeadedesigns.com/board/topic/183798-chrysler-300c-8-build/?p=2731834#entry2731834 Link to comment Share on other sites More sharing options...
doug118 Posted August 31, 2009 Report Share Posted August 31, 2009 I have no true knowledge on this but I'd imagine it would be the same as if it was internal. the only difference is that its not taking up room inside the box 2001 Tahoe. Huge front stage and 55+ substage http://www.stevemeadedesigns.com/board/topic/196418-another-tahoe-build-huge-front-stage-and-155-substage/ Link to comment Share on other sites More sharing options...
banginAltima Posted August 31, 2009 Report Share Posted August 31, 2009 You calculate them the same way as internel ports. The only difference is you don't have to increase box volume when you lengthen the port to keep the same amount of cubic feet. If you build it, db's will come... NSPL World Record Holder Trunk 0-1800 watts---147.9 with 1722 clamped watts @ 40Hz(9-20-09). Competition Only Record Holder Trunk 0-500 watts---148.1 2006 Nissan Altima 3.5 SE Currently Rebuilding.... My 150db Plus Trunk Build I do box designs. [benH] 6:24 pm: clipping doesn't really hurt subs [benH] 6:24 pm: being an idiot is what blows subs Link to comment Share on other sites More sharing options...
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