PDA

View Full Version : octogon port vs rectangle port!!



deathpenalty18
12-08-2009, 08:54 PM
omg yes a vs thread i wanna see what would be louder no one has really talked about the octogon ports so i wanna see whats up with them. they louder than slots?? quieter or what let me know!!

basscort2009
12-08-2009, 08:55 PM
PV audio should have a good answer for this. he is very smart on airflow and wat not.

Johnny Law.Lulz
12-08-2009, 08:56 PM
Octagon WTF.

jmanpc
12-08-2009, 08:56 PM
An octogon port is twice as loud as a rectangle port. On the other hand, a hexagon port is only 1.5 times louder, and a triangle port is just unfortunate.

deathpenalty18
12-08-2009, 08:57 PM
An octogon port is twice as loud as a rectangle port. On the other hand, a hexagon port is only 1.5 times louder, and a triangle port is just unfortunate.

awsome does anybody know how to build octogon port??

Ray21
12-08-2009, 08:59 PM
Octagon = dBz yo

jdawg
12-08-2009, 09:00 PM
awsome does anybody know how to build octogon port??

yea, cut angles and glue it together

RAM_Designs
12-08-2009, 09:01 PM
Octagon ports attract octamoms....no thanks, I'll stick to my aeros.

basebalz13
12-08-2009, 09:02 PM
there is someone on here with a pic in the avatar as a hexago port

dvldogyut
12-08-2009, 09:04 PM
yea, cut angles and glue it together

^^^this

should be 45 degree cuts i think?

deathpenalty18
12-08-2009, 09:04 PM
there is someone on here with a pic in the avatar as a hexago port

they look pritty bad *** huh?

dvldogyut
12-08-2009, 09:06 PM
there is someone on here with a pic in the avatar as a hexago port

pv audio?

deathpenalty18
12-08-2009, 09:07 PM
pv audio?

IMA CHECK IT REAL QUICK

thehardknoxlife
12-08-2009, 09:16 PM
^^^this

should be 45 degree cuts i think?Lol, NO! It will be 22 1/2 degree or 67 1/2 depending on how you look at it.

**** an octagon. Go dodecagon or go home!

dvldogyut
12-08-2009, 09:34 PM
Lol, NO! It will be 22 1/2 degree or 67 1/2 depending on how you look at it.

**** an octagon. Go dodecagon or go home!

oh my bad, lol

mlstrass
12-09-2009, 12:56 AM
Lol, NO! It will be 22 1/2 degree or 67 1/2 depending on how you look at it.

**** an octagon. Go dodecagon or go home!

15 degrees for the dodecagon......I say go for it.

orangecounty1
12-09-2009, 02:18 AM
debating on building this for my jeep

http://i7.photobucket.com/albums/y290/mobeious/4thfromhell.jpg

thehardknoxlife
12-09-2009, 02:35 AM
debating on building this for my jeep

http://i7.photobucket.com/albums/y290/mobeious/4thfromhell.jpg
That's not an octagon.

stangman67
12-09-2009, 02:42 AM
14gon ftw

thehardknoxlife
12-09-2009, 02:58 AM
14gon ftw Tetradecagon :D


Here I'll help a bit. designing a box with a octagon port is the same as designing a box with a square port, round port, **** shaped port, etc. find the area of the octagon and go from there.
To obtain the area of a regular octagon (equal sides) use this formula.

Area = a^2( 2 + 2√2 )
a= length of one equal side

Note:
"a" will be the length of the side on the inside of the port, when determining the displacement "a" would be the length of the side on the outside.

orangecounty1
12-09-2009, 03:38 AM
That's not an octagon.

same conceptsauce

thehardknoxlife
12-09-2009, 04:06 AM
same conceptsauceHexagon<octagon<**** shape.:fyi:

zack1442
12-09-2009, 04:36 AM
or just aero port :confused: maybe

x1le
12-09-2009, 08:37 AM
spltuscon probably knows a good amount about them

ngsm13
12-09-2009, 09:11 AM
It doesn't ******* matter you fegtard...

nG

spltuscon
12-09-2009, 09:17 AM
Wow, a thread about the Octoport!! Cool :cool:

I came up with the Octoport as a way to have a flared port that I could build to any diameter and length I needed. I could also use left over wood instead of buying 6" aeros at $37 a pop. By making it myself I can control port diameter, flare radius, overall flare size, etc...
I also like to be creative and come up with new/ better ways to do things. I'm not interested in copying what everyone else does...successful or not.

To answer you questions about what is louder....in my personal testing the Octo was around 2.5 db louder than a rectangle port with the same tuning. I can't do a direct comparison against a normal PSP aero because they only go up to 6" and all the Octo's I've built were larger than that. I did test vs. a 10" tube with custom flares and the Octo was a couple of tenths up.

I'm not going into how to build them since the way I do it has a lot of steps and most people are never gonna bother anyway.

I have also built a removable version also so I can switch tuning for SPL or daily. Here is a pic of a very loud SPL box for (2) 15's. Does a 154 legal with (1) 5k amp for one of my customers.

http://c1.ac-images.myspacecdn.com/images02/64/l_1ac23db01fe44db78c6d207511ffa2fc.jpg

spltuscon
12-09-2009, 09:21 AM
A pic of the removable version on my single 15 test box.


http://c3.ac-images.myspacecdn.com/images02/94/l_d58fbafb86ef443f8154b96f1b4123aa.jpg

A pic of a finished version. This one was doing 149.8 legal off only 2500w clamped watts.


http://c3.ac-images.myspacecdn.com/images02/90/l_39d2cff9c8c0465f993359270d362132.jpg

SPL Blazer
12-09-2009, 09:38 AM
I wondered how long it would take you to find this thread.

PV Audio
12-09-2009, 09:42 AM
PV audio should have a good answer for this. he is very smart on airflow and wat not.


pv audio?:laugh:
I'm flattered, but I'm far from one of the more talented members on here. The only difference is that instead of listen to second hand stories, I actually like reading books on theory. While theory is good, such as how ported boxes actually work physically, real world experience and tricks can trump theory. And besides, spltuscon actually builds those for income, so listen to him on the octagon port :)

amartin_72
12-09-2009, 09:46 AM
Anything to reduce "turbulence" will help. If you were a sound wave would you rather take a 90 degree corner or a nice smooth bend

PV Audio
12-09-2009, 09:51 AM
It doesn't ******* matter you fegtard...

nG
:laugh::laugh: I love all of the helpful and inquiring replies then jizm just comes in with this

PV Audio
12-09-2009, 09:59 AM
Anything to reduce "turbulence" will help. If you were a sound wave would you rather take a 90 degree corner or a nice smooth bend
No, I'd rather take this:
http://my-funspace.com/wp-content/uploads/2009/06/hot-***-wallpapers.jpg

deathpenalty18
12-09-2009, 10:06 AM
No, I'd rather take this:
http://my-funspace.com/wp-content/uploads/2009/06/hot-***-wallpapers.jpg

Nice! Ahah I'm proably going to build two boxed rectangle port for mabey dialy and octo for comps? Or should it be bothe octoport daily and comps

basebalz13
12-09-2009, 10:08 AM
daily and comps

deathpenalty18
12-09-2009, 10:10 AM
daily and comps

Awsome! I can't wait to build one!

sciullo779
12-09-2009, 10:20 AM
A pic of the removable version on my single 15 test box.


http://c3.ac-images.myspacecdn.com/images02/94/l_d58fbafb86ef443f8154b96f1b4123aa.jpg

A pic of a finished version. This one was doing 149.8 legal off only 2500w clamped watts.


http://c3.ac-images.myspacecdn.com/images02/90/l_39d2cff9c8c0465f993359270d362132.jpg

thats so ****

spltuscon
12-09-2009, 10:56 AM
Why thank you:)

Although, not as **** as the *** pic PV posted :p:

Bumpin Taurus
12-09-2009, 06:46 PM
Why thank you:)

Although, not as **** as the *** pic PV posted :p:
I completely agree.