jeffrm Posted February 12, 2012 Report Share Posted February 12, 2012 ok so heres the deal, i came up with what i thought were good dimensions, built the box, and tada tuned waaaaaaayyyy too high i guess. finally got to get torres and punched in the specs per side ( divided box, both sides ported) and when i punched in the specs 60hz is what i got. i want mid 30s. this one has 16in tall by 6in wide port. this one i come up with after using torres 16in tall by 3 in wide give me 36hz what im trying to figure out is if there was any way to modify the box i just built to be tuned right Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 by the way this was my first box build Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
bkolfo4 Posted February 12, 2012 Report Share Posted February 12, 2012 How wide is the opening inside the box? Looks like it is ~6". Are you adding the length created by that corner into the port length calculations? Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 the way ive been told to figure port length is: start of port to back wall+side wall to end of port-width of port and the port is currently 6in all the through Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
bkolfo4 Posted February 12, 2012 Report Share Posted February 12, 2012 What are the external dimensions of that box? Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 51.5in long x 17.5in tall x 22in deep Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 im wanting the tuning to be best for musical. down and dirty wicked bass Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 ok tell me if these seem right. the picture of the box is 6in longer than my original and different port design. Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
97Jetta1637 Posted February 12, 2012 Report Share Posted February 12, 2012 (edited) Thought the port area are had to be within the port area range? Then again idk how the calculator box works Edited February 12, 2012 by 97Jetta1637 Quote #teamihop Two 12 inch DC XL's Carbon Fiber Cap Stetsom 7k Shell of box / baffle built by me Port / sealing the box by John Hone Fuck midrange Alpine-9886 http://www.stevemeadedesigns.com/board/topic/177428-97jettas-sql-trunk-wall-loudest-99-buick-century-custom-with-a-one-legged-owner/ price has no influence on how something sounds I told him to move the fucking port. they see me hoppin they stoppin they can't believe im so white and dirty It looks like you got so drunk, that someone came up and stole your leg. Link to comment Share on other sites More sharing options...
jeffrm Posted February 12, 2012 Author Report Share Posted February 12, 2012 i think it is supposed to. i didnt realize that but i did some changes and its now in between the port area range. i had to add an inch to the width and 10" to the length and it gave me 34hz. Quote 03 tahoe z71 4 death penalty 18s 2 ampere audio 3800s @ .5 each 18v 156.7 @ 35hz 158.5 @ 50hz Link to comment Share on other sites More sharing options...
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