shadowcaster Posted February 21, 2014 Report Share Posted February 21, 2014 Hello guys so i got my design done now im having issues with port extension length.here is the torres which when i do a quick sketchup i see this where im lost now is the extension length.torres says port length is 22in physical port is 17.75in. i have 16.5in from the front of the baffle to the rear of the box leaving 1.75in from the rear wall(half the 3.5in port width)which leaves 1.25in remaining..when using the physical port number.or do i need to use the port length i entered 22in-16.5in= 5.5in thanks guys and on a side note while putn this together the mailman came 2000 blazer LS 240 mechman 2 b2 HN v3 15s crescendo bc5500 @.5 1/0 ebflex ofc d680/g31 kenwood deck mb quart components crescendo pwx 8s lots more to come blazer build http://www.stevemeadedesigns.com/board/topic/204432-shadowcasters-2k-blazer/ 142.8db MECA 2016 PA state champ mod 1 class Link to comment Share on other sites More sharing options...
oldsoundguy Posted February 21, 2014 Report Share Posted February 21, 2014 I just went through this. I had to do some searching but you only use the port length not physically length. So like you did measure front to back down the center line and subtract half the port. Then measure from the centerline to the right and left the remainder of the port length. Also you don't divide it both sides will be 22 " long measured from each centerline of the port. 80prs Arc Audio Xdi 1200.6 (using active crossovers) Freaking awesome amplifier Incriminator IA 10.1 Focal PS 130v 5.25 (doors) 4" Faital pro Neo (kick panels) 3" Faital pro Neo and focal tweets( dash) DC Audio level 3 12" custom box designed by joex built by me AGM front, XS 750SE batteries rear DC 180 alt 99 Toyota Tacoma extra cab http://www.stevemeadedesigns.com/board/topic/179476-my-small-build-turned-into-the-ongoing-build/ Link to comment Share on other sites More sharing options...
shadowcaster Posted February 21, 2014 Author Report Share Posted February 21, 2014 Thanks alot sir. if i understand your answer correctly i have to subtract 16.5in(front to back)from 22in(port length)leaving 5.5in(length of extension)to the left and right sides? im thankful for the help.math was never a strong subject 2000 blazer LS 240 mechman 2 b2 HN v3 15s crescendo bc5500 @.5 1/0 ebflex ofc d680/g31 kenwood deck mb quart components crescendo pwx 8s lots more to come blazer build http://www.stevemeadedesigns.com/board/topic/204432-shadowcasters-2k-blazer/ 142.8db MECA 2016 PA state champ mod 1 class Link to comment Share on other sites More sharing options...
kicker8940 Posted February 21, 2014 Report Share Posted February 21, 2014 Hello guys so i got my design done now im having issues with port extension length.here is the torres which when i do a quick sketchup i see this where im lost now is the extension length.torres says port length is 22in physical port is 17.75in. i have 16.5in from the front of the baffle to the rear of the box leaving 1.75in from the rear wall(half the 3.5in port width)which leaves 1.25in remaining..when using the physical port number.or do i need to use the port length i entered 22in-16.5in= 5.5in thanks guys and on a side note while putn this together the mailman came I have noticed from your screen shots that you are doing a double baffle,so you need to add that to Torres under "# of extra baffles" as that will change your net volume and tuning. Link to comment Share on other sites More sharing options...
shadowcaster Posted February 21, 2014 Author Report Share Posted February 21, 2014 yes i am 2- 3/4in MDF making some changes 2000 blazer LS 240 mechman 2 b2 HN v3 15s crescendo bc5500 @.5 1/0 ebflex ofc d680/g31 kenwood deck mb quart components crescendo pwx 8s lots more to come blazer build http://www.stevemeadedesigns.com/board/topic/204432-shadowcasters-2k-blazer/ 142.8db MECA 2016 PA state champ mod 1 class Link to comment Share on other sites More sharing options...
oldsoundguy Posted February 21, 2014 Report Share Posted February 21, 2014 Yes that is correct. Your ext. Left and right will be 3" long each. Add that to .75 + half your port which is 1.75 . Add them together and you have 5.5" then + 16.5 = 22 " port length. Hopefully that makes sense. 80prs Arc Audio Xdi 1200.6 (using active crossovers) Freaking awesome amplifier Incriminator IA 10.1 Focal PS 130v 5.25 (doors) 4" Faital pro Neo (kick panels) 3" Faital pro Neo and focal tweets( dash) DC Audio level 3 12" custom box designed by joex built by me AGM front, XS 750SE batteries rear DC 180 alt 99 Toyota Tacoma extra cab http://www.stevemeadedesigns.com/board/topic/179476-my-small-build-turned-into-the-ongoing-build/ Link to comment Share on other sites More sharing options...
shadowcaster Posted February 21, 2014 Author Report Share Posted February 21, 2014 makes complete sense now thank you guys for all the help and to kicker8940-yes it did change a bit but not by to much 2000 blazer LS 240 mechman 2 b2 HN v3 15s crescendo bc5500 @.5 1/0 ebflex ofc d680/g31 kenwood deck mb quart components crescendo pwx 8s lots more to come blazer build http://www.stevemeadedesigns.com/board/topic/204432-shadowcasters-2k-blazer/ 142.8db MECA 2016 PA state champ mod 1 class Link to comment Share on other sites More sharing options...
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