Closed Thread
Results 1 to 3 of 3

Reload Thread: Quick Port Question Please HElp

  1. #1
    NoPh33rRaCiNg's Avatar
    NoPh33rRaCiNg is offline CarAudio.com Elite



    Join Date
    Aug 2006
    Location
    Kent, WA
    Age
    24
    Posts
    1,548
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Quick Port Question Please HElp

    What happens to the tuning of the box when the first port width area (the width of the port area where the air exiting the box) is about an inche wider than the 2nd port width more toward the inside of the box.

    im using this diagram

    http://www.subwoofertools.com/forum/...&Vas=&Fs=&CE=0

    the pink side to the black side, that width is about an inch smaller than the green to teal sides.



    Team DC Audio : Team NWSPL : Team Shok





  2. #2
    profundus-sanus's Avatar
    profundus-sanus is offline CarAudio.com Veteran



    Join Date
    Dec 2006
    Location
    wilmington, NC
    Age
    27
    Posts
    2,969
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Quick Port Question Please HElp

    you definitely want to maintain a constant port area.

    You would have to calculate the tuning of the smaller area part then just guess hwo much lower it might be tuned.

    Since its just a step, the tuning is really calculatable, with common knowledge i'm aware of anyway. It may act somewhat like a horn tho. Just having two tuned frequency instead of a tuned range that a horn has.

    If it was a linear and constant change or exponential change in area then it would be a horn, but just stepping up the size from what i can conjur up would just make it a useless waveguide, that would only possibly help phasing.

    Simple answer, don't do it.




  3. #3
    NoPh33rRaCiNg's Avatar
    NoPh33rRaCiNg is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Aug 2006
    Location
    Kent, WA
    Age
    24
    Posts
    1,548
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Quick Port Question Please HElp

    **** alright i kinda ****ed up on the cut. ill short the first port wall. its my first box build



    Team DC Audio : Team NWSPL : Team Shok


Closed Thread

Posting Permissions

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

1e2 Forum