New enclosure! Need help!

[Demi 10+ year member]

Alright ive been talked into (by MANY members of this forum) into porting my 3 10" type-Rs. Fine, im sold. But here is the question. I have read the recommended box size for the subs ported, but with three do i let them share the enclosure? Do i seperate the subs? Can someone give me some plans? I would like the port to be under or above the subs for trunk size sake. Can someone hook me up?

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[draarong2004 10+ year member]

Alright ive been talked into (by MANY members of this forum) into porting my 3 10" type-Rs. Fine, im sold. But here is the question. I have read the recommended box size for the subs ported, but with three do i let them share the enclosure? Do i seperate the subs? Can someone give me some plans? I would like the port to be under or above the subs for trunk size sake. Can someone hook me up?

could do the port along the top, but port on one side or the other of the 3 subs would be more efficient, and if you are porting them, its better to keep them all in the same chamber, simple fact its harder to have 2 chambers ported to the exact same frequencies than it is one, opposite of sealed, which is better to keep them seperated, otherwise they end up "fighting" for air space, reguardless of if the box is the correct size or not.

 

[96civ 10+ year member]

and if you are porting them, its better to keep them all in the same chamber

What about cancellation? As long as you use your head and have the ability to cut wood decently well, you'll be fine putting them into separate chambers.

 

[draarong2004 10+ year member]

What about cancellation? As long as you use your head and have the ability to cut wood decently well, you'll be fine putting them into separate chambers.

yea but when was the last box you seen that had sperate chambers and was ported other than a prefagricated box? name one person who custom built a dual chamber or more ported enclosure, efficiency is key, and so long as the subs aren't aimed at each other, explain where the cancelation would be...i'd really like to know

 

[HAFFEY]

if u need help hit me up at jh7047@yahoo.com for box plans

 

[draarong2004 10+ year member]

if u need help hit me up at jh7047@yahoo.com for box plans

and your sources/people that'll back up your credibility are?

 

[96civ 10+ year member]

http://www.caraudio.com/forum/showthread.php?t=158570&highlight=ported+pics

I don't see any problem with a separate chamber. There is debate as to whether or not a shared chamber will actually produce cancellation. Since pointed subs towards each other produces cancellation due to the front waves interfering somewhat; why then couldn't the rear waves do the same in a shared ported chamber?

 

[draarong2004 10+ year member]

http://www.caraudio.com/forum/showthread.php?t=158570&highlight=ported+pics
I don't see any problem with a separate chamber. There is debate as to whether or not a shared chamber will actually produce cancellation. Since pointed subs towards each other produces cancellation due to the front waves interfering somewhat; why then couldn't the rear waves do the same in a shared ported chamber?

in that same instance, an improperly designed ported box, single sub or dual, can still produce cancelation through the port if the inside of the box is designed wrong......

 

[96civ 10+ year member]

in that same instance, an improperly designed ported box, single sub or dual, can still produce cancelation through the port if the inside of the box is designed wrong......

Assuming this person uses any work from any credible designer that would not be the issue. I could design him a box with separate chambers, and as long as he takes time and has patience in the construction, the outcome will be advantageous.

 

[draarong2004 10+ year member]

tis true, but the issue is very controversial nonetheless.

 

[Demi 10+ year member]

Assuming this person uses any work from any credible designer that would not be the issue. I could design him a box with separate chambers, and as long as he takes time and has patience in the construction, the outcome will be advantageous.

Well with a port for each sub thats gonna make a really really big box. I have three tens i want to put in the trunk of my 1990 audi 100. A shared port will be fine, but i dont know what i should tune it to, or how to figure out what size it should be.

 

[Demi 10+ year member]

Little help? Box plans anybody?

 

[draarong2004 10+ year member]

could give you 20 different plans, that doesn't mean they are gonna fit, what kind of vehicle do you have? what are your max dimesions you have to work with?

 

[Demi 10+ year member]

1990 audi 100. Ill haqve to measure. I have a ported dual 10 box right now and i have at least a foot on each side. Ill measure. The optimum size for one ported 10 is in the manual on alpines website, but i dont know how i should do it for three, and i dont know what size to port it to or why.

 

[draarong2004 10+ year member]

1990 audi 100. Ill haqve to measure. I have a ported dual 10 box right now and i have at least a foot on each side. Ill measure. The optimum size for one ported 10 is in the manual on alpines website, but i dont know how i should do it for three, and i dont know what size to port it to or why.

the simplest calc i know of thats pretty accurate for any port http://www.carstereo.com/help2/Articles.cfm?id=31

and just multiply the ported space for one sub x 3 and thats how large you should make the box

to figure on the cubic feet of a box, take the Length x height x width in inches, and divide by 1728 and that'll give you cubic feet of whatever your measurements are, best get out notepad on your computer, or a piece of paper, unless you get lucky and choose the right numbers.....

or you could cheat and use this calc found on the12volt.com

http://www.the12volt.com/caraudio/boxcalcs.asp#rec

which will save you alot of time, paper, and ink....lol

idk bout the port calc on there though.