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    port area for a 07 RE XXX 15

    as the title states, how much cross section port area for a XXX 15



    Head installer for Hamilton Audio
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    Re: port area for a 07 RE XXX 15

    Depends on cubic feet of the box. It's usually like 16 sq inches of port per cubic foot. 15s that are ported usually have about 4 cubes, so around 60 - 70 sq inches.



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    Box: 3.85 @ 36 hz with 66 sq in of port

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    Re: port area for a 07 RE XXX 15

    Quote Originally Posted by SeanDub View Post
    Depends on cubic feet of the box. It's usually like 16 sq inches of port per cubic foot. 15s that are ported usually have about 4 cubes, so around 60 - 70 sq inches.
    That's the DD generalization method. The sub plays a HUGE role in determining port area. With my single 12" sub, I can get slight port noise in a 3 cubic foot enclosure with 25in^2 of port area but I don't with two 8s in it. Why? Motor strength, suspension, power handling, excursion, and cone area all play a part as well as enclosure volume. It's NOT just enclosure volume. If that's the case, I'm going to have terrible port noise from my 5ft^3 enclosure with only 36in^2 of port area!



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    Re: port area for a 07 RE XXX 15

    Quote Originally Posted by Immacomputer View Post
    That's the DD generalization method. The sub plays a HUGE role in determining port area. With my single 12" sub, I can get slight port noise in a 3 cubic foot enclosure with 25in^2 of port area but I don't with two 8s in it. Why? Motor strength, suspension, power handling, excursion, and cone area all play a part as well as enclosure volume. It's NOT just enclosure volume. If that's the case, I'm going to have terrible port noise from my 5ft^3 enclosure with only 36in^2 of port area!
    Then educate us on how to use sub specs to determine proper sub enclosures. I'd like to build better suited boxes, and was looking for this information last night.



    Deck: Pioneer Premier 880 w/ iPod
    In-dash: AudioControl Epic-150
    Sub: Digital Designs 9515e/f Dual 1.0
    Amp: Atomic 5000.1 @ 0.5 ohm
    Box: 3.85 @ 36 hz with 66 sq in of port

    Refs: fwb_1234, Hopes Audio, Louisiana_CRX, astrolade, nhustlar, teamquakecelica, walkychalky, negative3five, TypeRBass, jblanford (x2), massiveaudiocw, KnOkIn It 420, hoss, xtremebassjunky, trow100, MillzThaYungin, IonSQL, matrxx dude, yunvme666, vitveet, PWNED, Team H&K, jk32sho

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    Re: port area for a 07 RE XXX 15

    lots and lots



    ..no really, 16 square inches per cubic feet



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    Re: port area for a 07 RE XXX 15

    i just use this generic calculator.......it seems to jive pretty close with some others i've used. the biggest factor it uses, i believe, is the xmax.



    i just used the re optimal specs of 4^3@33 htz





    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

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    Re: port area for a 07 RE XXX 15

    thats an awful lot of port tho.....due to that insane 54 mm of Xmax



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

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    Re: port area for a 07 RE XXX 15

    You don't have to worry about that much excursion because it will be **** near impossible to drive the sub to full excursion around tuning, which is where port noise really becomes a problem. If the sub has low motor strength, you can cut back on port area even more. Drivers with high power handling, moderate excursion, and a strong motor will need more port area.

    185in^2 is way too much for a 15" XXX.



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    Re: port area for a 07 RE XXX 15

    Quote Originally Posted by Immacomputer View Post
    You don't have to worry about that much excursion because it will be **** near impossible to drive the sub to full excursion around tuning, which is where port noise really becomes a problem. If the sub has low motor strength, you can cut back on port area even more. Drivers with high power handling, moderate excursion, and a strong motor will need more port area.

    185in^2 is way too much for a 15" XXX.
    i was thinking that a ton of port area.....the fart box i built for whiteice's 18" mt had 200^2. i'd still put 80"-100" on the XXX tho.



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

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    Re: port area for a 07 RE XXX 15

    between 75-80 is what my 15 XXX had and it sounded great



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    Re: port area for a 07 RE XXX 15

    Quote Originally Posted by 90accordman View Post
    between 75-80 is what my 15 XXX had and it sounded great
    sell me that 10" now...



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  12. #12
    406er's Avatar
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    Re: port area for a 07 RE XXX 15

    Quote Originally Posted by 90accordman View Post
    between 75-80 is what my 15 XXX had and it sounded great
    what year of XXX did u have. i think ill aim for 80-100, cause the 168 thats called for is retarded



    Head installer for Hamilton Audio
    Macrom, Stetsom, RD and Sundown car audio

    1999 Jeep Cherokee Sport
    Eclipse CD3100 head unit
    Steg Audio System F4 380 4ch amp
    Macrom M2 6 1/2 comp set
    RE RE 10

    dB set up
    SD3000, SPL12 143.4dB (in my 91 Sonoma)
    http://www.sounddomain.com/ride/759285

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    Re: port area for a 07 RE XXX 15

    i think he was one of the first guys here to have the newer style like you have



    Quote Originally Posted by chase007 View Post
    if u need a box...I'l taked 3 years of shop class so i know what im doing.

    after i explained to him there's more to a proper box than boards and glue and he should practice before trying to sell boxes to others

    Quote Originally Posted by chase007 View Post
    yes personaly if it was some one elce that just starting making boxes but i'v taken shop for 3 years now...Making a lil box is nothing i don't need to pratice on a box to get it right i learned alot of stuff from 1 box and i can fix that in my next box
    after i told him that customers would care about the looks of the box

    Quote Originally Posted by chase007 View Post
    if u want some thing that looks pretty why don't u find a black guy with a big d*ck.

  14. #14
    406er's Avatar
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    Re: port area for a 07 RE XXX 15

    ahhh



    Head installer for Hamilton Audio
    Macrom, Stetsom, RD and Sundown car audio

    1999 Jeep Cherokee Sport
    Eclipse CD3100 head unit
    Steg Audio System F4 380 4ch amp
    Macrom M2 6 1/2 comp set
    RE RE 10

    dB set up
    SD3000, SPL12 143.4dB (in my 91 Sonoma)
    http://www.sounddomain.com/ride/759285

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