View Full Version : Triangle Port

fasfocus00

05-20-2009, 04:13 PM

so, i'm deciding on a triangle shaped port for a box. i've always stuck to square/round/rectangle shaped ports. I had a thought for a design and was wondering does anyone have a way to calculate the port length. Or can I just calculate it the same as a square port since a square is pretty much just 2 triangles?

SHOnOFF

05-20-2009, 04:21 PM

a square is NOT two triangles dude unless both were right triangles and then your port would look wierd. use an equalateral triangle port that would look original and sweet especially with beveled edges. look up triangle volumes on google for area

dumple

05-20-2009, 04:23 PM

i could be wrong but i think the triangle port idea will have some crazy turbulence issues and sound like poopy

DB-Audio

05-20-2009, 04:25 PM

isnt the volume of a triangle base times height

fasfocus00

05-20-2009, 04:26 PM

a square is NOT two triangles dude unless both were right triangles and then your port would look wierd. use an equalateral triangle port that would look original and sweet especially with beveled edges. look up triangle volumes on google for area

a square is 2 triangles no matter how it's done, no matter what kind of triangle b/c a square cut from one corner across to the next makes 2 triangles. so you can quit being a smart *** with your total of 20 post. maybe next time you can just save your sarcasm for someone else. I just want to know about calculating port length.

fasfocus00

05-20-2009, 04:27 PM

isnt the volume of a triangle base times height

base x height x 1/2 = Y

Y x depth = Volume

aaronrchr

05-20-2009, 04:27 PM

isnt the volume of a triangle base times height

no thats area

a=1/2bh

fasfocus00

05-20-2009, 04:40 PM

i could be wrong but i think the triangle port idea will have some crazy turbulence issues and sound like poopy

you may be right but I would still like to build it and that still hasn't answered my question about calculating the length

jmanpc

05-20-2009, 04:41 PM

I'd say calculate it as a square with the same area as the triangle. It's the area that matters, not the shape.

thegreatestpenn

05-20-2009, 04:42 PM

I saw someone with a triangle-shaped port at a USACI event last year and his mojo 15 put up some serious numbers in it. Almost 170db doing port wars, in the mid 140's in the kick.

jco1385

05-20-2009, 04:43 PM

a square is 2 triangles no matter how it's done, no matter what kind of triangle b/c a square cut from one corner across to the next makes 2 triangles. so you can quit being a smart *** with your total of 20 post. maybe next time you can just save your sarcasm for someone else. I just want to know about calculating port length.

which would be 2 right triangles, as a square has 4 right angle corners.

a rhombus is not a sqaure, although it has 4 equal sides. and two of the same tiangle will not always make a square :fyi:

********

Supergumby5000

05-20-2009, 04:44 PM

I'd say calculate it as a square with the same area as the triangle. It's the area that matters, not the shape.

this

iamamp3pimp

05-20-2009, 04:45 PM

i think the triangle would be okay, the length would be the same as a rectangle port with the same area.

-Robin

fasfocus00

05-20-2009, 04:49 PM

which would be 2 right triangles, as a square has 4 right angle corners.

a rhombus is not a sqaure, although it has 4 equal sides. and two of the same tiangle will not always make a square :fyi:

********

i don't care what you ******* have to say but if you take 2 equal triangles and put them together you'll either make a rectangle or a square end of that discussion. i just want to know about port length for a triangle shaped port. thanks for those that actually contributed something to this.

jmanpc

05-20-2009, 04:51 PM

i don't care what you ******* have to say but if you take 2 equal triangles and put them together you'll either make a rectangle or a square end of that discussion. i just want to know about port length for a triangle shaped port. thanks for those that actually contributed something to this.

the word you're looking for is quadrilateral :fyi:

93dakota

05-20-2009, 04:51 PM

To calculate the port length of a triangle pot all you have to do is find the area of the triangle and plug it in to a port formula like this one

http://mobile.jlaudio.com/support_pages.php?page_id=165

djman37

05-20-2009, 04:52 PM

make a square then, or a rectangle.

http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Green_equilateral_triangle_point_up.svg/600px-Green_equilateral_triangle_point_up.svg.png

jco1385

05-20-2009, 04:53 PM

i don't care what you ******* have to say but if you take 2 equal triangles and put them together you'll either make a rectangle or a square end of that discussion. i just want to know about port length for a triangle shaped port. thanks for those that actually contributed something to this.

i bit pissy?

i was just stating the geometrical facts :fyi:

and you are still wrong, btw

djman37

05-20-2009, 04:54 PM

here's some already together

http://wpc.puzzles.com/history/tests/2000wpc/images/triangles-1.gif

no squares, no rectangles. I see some parallelagrams though.

sorry for teh hugeness.

Supergumby5000

05-20-2009, 04:56 PM

in terms of area, two triangles will make a square (duh)

in terms of geometric shapes, not so much

djman37

05-20-2009, 04:56 PM

Volume is area*length, get to building and make a buildlog with pics.

fasfocus00

05-20-2009, 04:57 PM

the word you're looking for is quadrilateral :fyi:

none the less.

area is what matters and I can calculate length from there?

jco1385

05-20-2009, 04:58 PM

1/2 base x height x length :fyi:

mlstrass

05-20-2009, 05:12 PM

I saw someone with a triangle-shaped port at a USACI event last year and his mojo 15 put up some serious numbers in it. Almost 170db doing port wars, in the mid 140's in the kick.

Sounds like major turbelance/restriction to me which is good for port wars, but not so good for SPL or sounding good...

Assuming this is a daily box then I'd probably do a little more port area then normal just to be safe. Maybe 14^2 per cube if your sub normally requires 12^2 per cube.

Throw up some pics when it's done...

SSS 18734

05-20-2009, 05:44 PM

jmanpc answered this question on the first page; what are we discussing?

Triangle ports work fine, there aren't any turbulence/noise issues just like any port thats designed properly.

grimreper912003

05-20-2009, 05:55 PM

Remember all squares are a rectangle but not all rectangles re a square.

isnt the volume of a triangle bass times height

Fixed :cool:

SHOnOFF

05-21-2009, 05:54 PM

a square is 2 triangles no matter how it's done, no matter what kind of triangle b/c a square cut from one corner across to the next makes 2 triangles. so you can quit being a smart *** with your total of 20 post. maybe next time you can just save your sarcasm for someone else. I just want to know about calculating port length.

hey ******, since you think you know what the fawk ur squakin about, take your two equalateral triangles (which has 3-60degree angles in case you don't know)

and you tell me how in the fawk you make a square (which has 4-90 degree angles in case you didn't know that either)

go play in traffic somewhere azzwipe (on the freeway preferably):laugh::laugh:

18lexusowner

05-21-2009, 10:40 PM

I think we should all go back to geometry class....

DNick454

05-21-2009, 11:16 PM

Some of the arguments on here are just plain retarded. It will be IMPOSSIBLE to curve a triangle port, but if it's a straight port, as long as it has the same area as a round or slot port. That's it.... period,it will perform the same. However, most ports that have large areas must be curved. Either way, you can get by with less port area if you take a 5/8ths roundover bit and run it along the inside of the triangle port on both ends for a flared effect. Just prove people wrong, I suggest you build this, or I will have to :D

RAM_Designs

05-21-2009, 11:22 PM

United States school system FTMFL.