Gatorcity Posted December 2, 2010 Report Share Posted December 2, 2010 Hey guys, What is the correct formula to figure port length for ported boxes? Just for my own kicks I like to sit down and draw up ported boxes and do the math for them. It helos keep my mind busy...I have found 2 formulas that are completely different, im not even sure if they are correct. http://www.carstereo.com/help/Articles.cfm?id=21 http://www.calculatoredge.com/new/ventlength.htm Im on my phone so I hope the links work. Can someone help me out? Thanks in advance! comic on tv: I got a concussion from playing t-ball when i was younger, we dont really have time to go into that! . . . . 15 seconds pass . . . . . my girl: no one pitches to you in t-ball, do they??? Link to comment Share on other sites More sharing options...
fecupe2001 Posted December 2, 2010 Report Share Posted December 2, 2010 Well, i used a lot of pencil and paper until i saw Torres calculator, that´s the formula i always used with great succes, now it´s all way faster and easier hehe, you can find it on a sticky in here. I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion! 2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/ 8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/ Link to comment Share on other sites More sharing options...
Gatorcity Posted December 2, 2010 Author Report Share Posted December 2, 2010 You would use which one? The first one? Or second? I have seen the torres calculator, never used it but I just like the pencil and paper method lol I find it fun comic on tv: I got a concussion from playing t-ball when i was younger, we dont really have time to go into that! . . . . 15 seconds pass . . . . . my girl: no one pitches to you in t-ball, do they??? Link to comment Share on other sites More sharing options...
Torres Posted December 2, 2010 Report Share Posted December 2, 2010 the first one is for vance dickasons port formula. made primarily for round ports. the one fecupe and i use is this one Link to comment Share on other sites More sharing options...
Gatorcity Posted December 2, 2010 Author Report Share Posted December 2, 2010 Awesome man! Thanks a lot! Quick question...i see that LV (length of vent) is in the actual formula, so will that equation give me the actual tuning frequency of the port? comic on tv: I got a concussion from playing t-ball when i was younger, we dont really have time to go into that! . . . . 15 seconds pass . . . . . my girl: no one pitches to you in t-ball, do they??? Link to comment Share on other sites More sharing options...
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