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    New enclosure! Need help!

    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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    Re: New enclosure! Need help!

    Quote Originally Posted by Demi
    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.



    What it do?
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    2005 F150 Reg Cab Long Bed
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    Re: New enclosure! Need help!

    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.




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    Re: New enclosure! Need help!

    Quote Originally Posted by 96civ
    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



    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
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    Re: New enclosure! Need help!




    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
    http://www.sounddomain.com/ride/2385548

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    Re: New enclosure! Need help!

    http://www.caraudio.com/forum/showth...ht=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?




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    Re: New enclosure! Need help!

    Quote Originally Posted by 96civ
    http://www.caraudio.com/forum/showth...ht=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......



    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
    http://www.sounddomain.com/ride/2385548

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    Re: New enclosure! Need help!

    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.




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    Re: New enclosure! Need help!

    tis true, but the issue is very controversial nonetheless.



    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
    http://www.sounddomain.com/ride/2385548

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    Re: New enclosure! Need help!

    Quote Originally Posted by 96civ
    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.




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    Re: New enclosure! Need help!

    Little help? Box plans anybody?




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    Re: New enclosure! Need help!

    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?



    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
    http://www.sounddomain.com/ride/2385548

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    Demi's Avatar
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    Re: New enclosure! Need help!

    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.




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    Re: New enclosure! Need help!

    Quote Originally Posted by Demi
    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.



    What it do?
    always abide by this simple installation rule
    a larger wire=a cooler wire

    2005 F150 Reg Cab Long Bed
    Headunit: Panisonic c5300 mp3
    Front Speakers: Rockford fosgate FRC-3257 5x7
    Rear Speakers : Rockford fosgate FRC-3257 5x7
    Sub amp: Power Acoustic LT1440/2
    Subs: (2) 12" Kicker 05CompVR's
    Not metered yet!!!1

    My truck
    http://www.sounddomain.com/ride/2385548

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