User Tag List

Closed Thread
Page 1 of 3 1 2 3 LastLast
Results 1 to 15 of 37

Reload Thread: 15" bl box port too small

  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)
    Tagged
    0 Thread(s)

    15" bl box port too small

    i built a box for a 15" bl but like an idiot forgot about port area and i only have about 29 sq in. i'm building a new box today how do these specs look correct any if wrong. 20" wide 25" tall 25" deep port is 3.5 tall 18.5 wide about 37" long . box is 4.2 cuft tuned to 30 hz. speaker up port across the bottom facing back. looks like about 64 sqin of port.







  2. #2
    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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    someone help me out with the math i'm not that great at box design.




  3. #3
    themommyvan's Avatar
    themommyvan is offline Special Olympics winner



    Join Date
    Jan 2007
    Location
    Belleville,MI
    Age
    37
    Posts
    1,504
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    Why not just make the port all the way across the bottom?



    refs: silver02alty,gordos420,hc3_cuz,bad @SS chevy ,Wkbdkid,Kingdell91,Lax916,Viveet,hoodkid, skilla22,profundus-sanus, Rashaddd,99grandprixGT,BigPimpin91 .More I cant remember.

    Quote Originally Posted by Eugenics View Post
    What you're getting with a ca.com poll is a consensus from a large number of wealthy, attractive, successful young men -- who are morally and ethically dignified.
    Quote Originally Posted by MoTs MothernLaw View Post
    MoT likes it when I **** him with the strap on.

  4. #4
    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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    thats what i'm doing. box is 20" wide so with 3/4" wood port would be 18.5 wide.




  5. #5
    themommyvan's Avatar
    themommyvan is offline Special Olympics winner



    Join Date
    Jan 2007
    Location
    Belleville,MI
    Age
    37
    Posts
    1,504
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    My bad looked at it wrong



    refs: silver02alty,gordos420,hc3_cuz,bad @SS chevy ,Wkbdkid,Kingdell91,Lax916,Viveet,hoodkid, skilla22,profundus-sanus, Rashaddd,99grandprixGT,BigPimpin91 .More I cant remember.

    Quote Originally Posted by Eugenics View Post
    What you're getting with a ca.com poll is a consensus from a large number of wealthy, attractive, successful young men -- who are morally and ethically dignified.
    Quote Originally Posted by MoTs MothernLaw View Post
    MoT likes it when I **** him with the strap on.

  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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    does that look like it will work though. dimensions, cuft, port area? i'll be buying the wood i a few hours maybe i'll post a biuld log.




  7. #7
    themommyvan's Avatar
    themommyvan is offline Special Olympics winner



    Join Date
    Jan 2007
    Location
    Belleville,MI
    Age
    37
    Posts
    1,504
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    I used the RE calc and came up with something different. 34 port length and 4.6 before sub displacement. Tuned to 30.5



    refs: silver02alty,gordos420,hc3_cuz,bad @SS chevy ,Wkbdkid,Kingdell91,Lax916,Viveet,hoodkid, skilla22,profundus-sanus, Rashaddd,99grandprixGT,BigPimpin91 .More I cant remember.

    Quote Originally Posted by Eugenics View Post
    What you're getting with a ca.com poll is a consensus from a large number of wealthy, attractive, successful young men -- who are morally and ethically dignified.
    Quote Originally Posted by MoTs MothernLaw View Post
    MoT likes it when I **** him with the strap on.

  8. #8
    profundus-sanus's Avatar
    profundus-sanus is offline CarAudio.com Veteran



    Join Date
    Dec 2006
    Location
    wilmington, NC
    Age
    28
    Posts
    2,969
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    that doesn't come out right..

    comes out to about 3.6 net tuned to 35hz




  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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    so sould someone throw me a design that will work. i can go 20" wide because i want to eventually add a second sub and i have 40" wide to work with. i want about a 30 hz tunning and i can go about as high and deep as i need.




  10. #10
    profundus-sanus's Avatar
    profundus-sanus is offline CarAudio.com Veteran



    Join Date
    Dec 2006
    Location
    wilmington, NC
    Age
    28
    Posts
    2,969
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    you trying to make it so you can just build an identical box for another 15 to put in next to it?




  11. #11
    themommyvan's Avatar
    themommyvan is offline Special Olympics winner



    Join Date
    Jan 2007
    Location
    Belleville,MI
    Age
    37
    Posts
    1,504
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small




    refs: silver02alty,gordos420,hc3_cuz,bad @SS chevy ,Wkbdkid,Kingdell91,Lax916,Viveet,hoodkid, skilla22,profundus-sanus, Rashaddd,99grandprixGT,BigPimpin91 .More I cant remember.

    Quote Originally Posted by Eugenics View Post
    What you're getting with a ca.com poll is a consensus from a large number of wealthy, attractive, successful young men -- who are morally and ethically dignified.
    Quote Originally Posted by MoTs MothernLaw View Post
    MoT likes it when I **** him with the strap on.

  12. #12
    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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    yeah basically




  13. #13
    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)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    i've done the re calculator the only thing with that though is i have to make the height the width because port will be across the bottom not the side.




  14. #14
    profundus-sanus's Avatar
    profundus-sanus is offline CarAudio.com Veteran



    Join Date
    Dec 2006
    Location
    wilmington, NC
    Age
    28
    Posts
    2,969
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    well, do you have any desired height?




  15. #15
    themommyvan's Avatar
    themommyvan is offline Special Olympics winner



    Join Date
    Jan 2007
    Location
    Belleville,MI
    Age
    37
    Posts
    1,504
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Re: 15" bl box port too small

    yea Ive done that with my last box. It was for 4 18s



    refs: silver02alty,gordos420,hc3_cuz,bad @SS chevy ,Wkbdkid,Kingdell91,Lax916,Viveet,hoodkid, skilla22,profundus-sanus, Rashaddd,99grandprixGT,BigPimpin91 .More I cant remember.

    Quote Originally Posted by Eugenics View Post
    What you're getting with a ca.com poll is a consensus from a large number of wealthy, attractive, successful young men -- who are morally and ethically dignified.
    Quote Originally Posted by MoTs MothernLaw View Post
    MoT likes it when I **** him with the strap on.

Closed Thread
Page 1 of 3 1 2 3 LastLast

Posting Permissions

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