Port

Discussion in 'Archived Threads 2001-2004' started by Rick Thomas, Apr 10, 2002.

  1. Rick Thomas

    Rick Thomas Agent

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    WinISD tells me to use a 4" X 17" port to tune my 130L sono

    to 19hz.Is that a straight port or flared in the program? I have a 4" flared port coming from PE so if thats not calculated in WinISD how do i find out the correct length with flared port?.thanks alot
     
  2. Ron D Core

    Ron D Core Stunt Coordinator

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    The dimensions of the port flare are negligible. If the flare is huge then you would have something closer to a horn. I would just worry about the lenth of the straight tube. Maybe add a centimeter or so, but it won't make much of a difference with a port thats already 17" long.
     
  3. Patrick Sun

    Patrick Sun Moderator
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    Rule of thumb: add one inch to the end-to-end length of a flared port to arrive at the length of a "straight" port. So if the program tells you that you need a 17" long port, you'll need an 18" flared port (measured from end-to-end).

    But one inch isn't going to kill your subdesign.
     

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