Mustang2dakota Posted January 3, 2015 Report Posted January 3, 2015 Hey guys, im looking for a little help on determining the cross sectional area on an aero port. I am able to determine,and find the correct cross sectional area for a slot port (cubic foot of box * 12 to 16 = port cross sectional area) EX. 3.5 * 12 = 42in cross sectional area,so on a slot port i would need an opening ~12.5in by ~3.36in. But i do not know the correct formula for an aero port or how to determine how big of an aero port i would need to meet a certain cross sectional area. May sound like a stupid question but id appreciate some help because i cant seem to find much on the internet. 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
jk13 Posted January 3, 2015 Report Posted January 3, 2015 You mean pi times radius squared to find the area of a circle? Static drops are my bag.
Mustang2dakota Posted January 3, 2015 Author Report Posted January 3, 2015 You mean pi times radius squared to find the area of a circle? okay so for example the cross sectional area of my slot port in the box i have now is 86in, so if it were to magically turn it into a aero port i would need ~3 6in aero ports? because one 6in aero port is ~28.2in of cross sectional area (according to pi*r^2) and 86/28.2= ~3. I thinking that it was a little more complicated than that,but i guess that makes sense 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
Joe X Posted January 3, 2015 Report Posted January 3, 2015 If you are asking about the rule of thumb, for round ports is 9 to 12 square inches of port area / cube.
Mustang2dakota Posted January 3, 2015 Author Report Posted January 3, 2015 If you are asking about the rule of thumb, for round ports is 9 to 12 square inches of port area / cube. that is also kind of what i was asking,thanks for the reply 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
Triticum Agricolam Posted January 3, 2015 Report Posted January 3, 2015 What subs are you using and how many? The "X amount of port area per cube" rule doesn't always work out well. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
Mustang2dakota Posted January 4, 2015 Author Report Posted January 4, 2015 What subs are you using and how many? The "X amount of port area per cube" rule doesn't always work out well. im building a small ported box for a friend who wants an aero port,and its one alpine type r 12 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
Mustang2dakota Posted January 4, 2015 Author Report Posted January 4, 2015 instead of starting another topic maybe ill just ask my next question here,a buddy of mine just built a box for an american bass xfl 15 tuned to 35hz with 2 3in aero ports and winisd said his vent match was .07 but he still gets noticeable port "chuffing" at ~40HZ,so what is a good base for vent match,because winisd says anything below .15 is okay,but im starting to think thats not correct 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
Joe X Posted January 4, 2015 Report Posted January 4, 2015 instead of starting another topic maybe ill just ask my next question here,a buddy of mine just built a box for an american bass xfl 15 tuned to 35hz with 2 3in aero ports and winisd said his vent match was .07 but he still gets noticeable port "chuffing" at ~40HZ,so what is a good base for vent match,because winisd says anything below .15 is okay,but im starting to think thats not correct Something went wrong with the data you entered, to the very least a 6" port should be used on a 15", likely it would benefit with more.
Mustang2dakota Posted January 4, 2015 Author Report Posted January 4, 2015 okay,i kind of thought that 3in was on the small side,thanks for the help 2014 JKU Sound: pioneer xav-65 4 12in pioneer tsw3003d4 2 pioneer gm-d9601 (much more in route) General: 18in worx rims 33in tire stinger src bumpers light bars 6k hids 2in leveling kit 3.25in lift The Build Log: http://www.stevemeadedesigns.com/board/topic/195839-2014-jku-build-4-12s/
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