Closed Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 20

Reload Thread: too much port area?

  1. #1
    rain377's Avatar
    rain377 is offline Senior VIP Member



    Join Date
    Dec 2002
    Location
    Detroit, Michigan
    Age
    30
    Posts
    316
    Post Thanks / Like
    Images
    2
    Mentioned
    0 Post(s)

    too much port area?

    I'm bilding a box that is 6.2 cuft after displacement that will have 129.5 sqin of prt. Is that too much or is there anything such as too much?







  2. #2
    AudioXtremes's Avatar
    AudioXtremes is offline Team FatStig



    Join Date
    Nov 2006
    Location
    Indianapolis, IN
    Posts
    1,857
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    There is a thing as too much. It is sub and application dependant IMO. But you should be fine.



    TEAM FATSTIG
    Cause I just gotta be me!


  3. #3
    mlstrass's Avatar
    mlstrass is offline Shaggy DOA



    Join Date
    Jul 2006
    Location
    Illinois
    Posts
    10,488
    Post Thanks / Like
    Mentioned
    28 Post(s)

    Re: too much port area?

    Seems a little high. What sub and intended application?




  4. #4
    miker's Avatar
    miker is offline CarAudio.com Veteran



    Join Date
    Oct 2007
    Location
    Wayzata, MN
    Posts
    5,327
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    seems like a lot... But it could be good depending on your sub.




  5. #5
    SeanDub's Avatar
    SeanDub is offline CarAudio.com Veteran



    Join Date
    May 2006
    Location
    Kansas
    Age
    25
    Posts
    3,528
    Post Thanks / Like
    Images
    4
    Mentioned
    19 Post(s)

    Re: too much port area?

    What are you running?



    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

  6. #6
    rain377's Avatar
    rain377 is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2002
    Location
    Detroit, Michigan
    Age
    30
    Posts
    316
    Post Thanks / Like
    Images
    2
    Mentioned
    0 Post(s)

    Re: too much port area?

    I'll be running 2-15" fi bl off a dd z1. Its going in a grand cherokee. Port will be tuned to about 33Hz.




  7. #7
    crzystng's Avatar
    crzystng is offline Member



    Join Date
    Dec 2005
    Location
    Somewhere over the Rainbow
    Posts
    109
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    Quote Originally Posted by miker View Post
    seems like a lot... But it could be good depending on your sub.
    How so?



    H/U: Alpine 9815-Alpine PXA-H800 DSP
    Front Stage: Boston Acoustics Pro 6.53X, SPX-107R Type X 4" + Pioneer PRS 720 Tweets, Faital Pro 10" MidBass
    Front Stage Amp: (X3) JBL 80.4
    SUB: JBL 1200.1 on a 15" RE SX in 3.837^3 @26.62hz W/ 64.75^2 port area
    ELE: Custom wound 270 Amp alt - 1/0 Knu Konceptz Power/Ground - Custom milled D Blocks - Custom Built RCA's
    220+^3 RAAMmat - 100+^3 Damp Pro - 20+ cans of Expanding Foam

  8. #8
    galacticmonkey's Avatar
    galacticmonkey is offline Wants a button like that.



    Join Date
    Sep 2006
    Location
    Tampa, FL
    Posts
    7,675
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    Personally, Id stick with around 80 sq inches. You dont need a ton of port to be loud.




  9. #9
    rain377's Avatar
    rain377 is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2002
    Location
    Detroit, Michigan
    Age
    30
    Posts
    316
    Post Thanks / Like
    Images
    2
    Mentioned
    0 Post(s)

    Re: too much port area?

    What adverse effect would a larger port have? With the room i have to work with it's hard to design a box with the right tuning and airspace for these speakers. Or if someone could design me a center port box. Max dimensions are 40" wide 27" deep and 20" tall. I want tuning around 32-33.




  10. #10
    miker's Avatar
    miker is offline CarAudio.com Veteran



    Join Date
    Oct 2007
    Location
    Wayzata, MN
    Posts
    5,327
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    Quote Originally Posted by crzystng View Post
    How so?
    A sub with a higher Xmax will require more port area, also larger cone area requires more port area.




  11. #11
    rain377's Avatar
    rain377 is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2002
    Location
    Detroit, Michigan
    Age
    30
    Posts
    316
    Post Thanks / Like
    Images
    2
    Mentioned
    0 Post(s)

    Re: too much port area?

    so would this setup for for 2- 15" woofers with 21mm of xmax




  12. #12
    SeanDub's Avatar
    SeanDub is offline CarAudio.com Veteran



    Join Date
    May 2006
    Location
    Kansas
    Age
    25
    Posts
    3,528
    Post Thanks / Like
    Images
    4
    Mentioned
    19 Post(s)

    Re: too much port area?

    It's a little much, but it should work out fine. But you need more volume!
    Last edited by SeanDub; 04-14-2008 at 10:25 AM.



    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

  13. #13
    bad @SS chevy's Avatar
    bad @SS chevy is offline CarAudio.com Veteran



    Join Date
    Jan 2008
    Location
    ohio
    Posts
    2,739
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    It will be fine.. wang away.



    2011 Grand Cherokee Limited
    2 12" RD Alpha Weights v2's
    2 12" Atomic ELE's
    2 12" AQ Hdc3's
    1 12" Atomic. APX
    ARC 2500.1

  14. #14
    crzystng's Avatar
    crzystng is offline Member



    Join Date
    Dec 2005
    Location
    Somewhere over the Rainbow
    Posts
    109
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    Quote Originally Posted by miker View Post
    A sub with a higher Xmax will require more port area, also larger cone area requires more port area.
    Any kind of "rule of thumb" for that? like how much should be used with a 15" One-Way 22 mm VS. 12" One-Way 4mm?



    H/U: Alpine 9815-Alpine PXA-H800 DSP
    Front Stage: Boston Acoustics Pro 6.53X, SPX-107R Type X 4" + Pioneer PRS 720 Tweets, Faital Pro 10" MidBass
    Front Stage Amp: (X3) JBL 80.4
    SUB: JBL 1200.1 on a 15" RE SX in 3.837^3 @26.62hz W/ 64.75^2 port area
    ELE: Custom wound 270 Amp alt - 1/0 Knu Konceptz Power/Ground - Custom milled D Blocks - Custom Built RCA's
    220+^3 RAAMmat - 100+^3 Damp Pro - 20+ cans of Expanding Foam

  15. #15
    bamaboy's Avatar
    bamaboy is offline War Eagle!!!



    Join Date
    Oct 2004
    Location
    Auburn, Alabama
    Age
    25
    Posts
    7,206
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: too much port area?

    usual rule is 12-16sq in per cubic ft of box your going to use

    you should be fine, but it would hurt to bring it down to say 90sq in or so

    also, you cant get any more room out of the deminisons ? (havnt looked at them)

    i would do 4cubes apiece and then you could run 130sq in if you wanted, just seems like a small box for 2 15s




    04 Explorer
    Kenwood DDX812
    RF 3Sixty.2
    T6004
    T4002
    T40001bd
    Hertz MLK-2 running Active
    Hertz HCX165
    4x DC Audio LVL 4 12"s

    Summer 09' Build...Operation:Pull Wall out, put new subs in DONE!
    Build
    Photobucket
    now with video

Closed Thread
Page 1 of 2 1 2 LastLast

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum