Cardboard Port???

Discussion in 'Archived Threads 2001-2004' started by Frank Kanyak, Apr 2, 2002.

  1. Frank Kanyak

    Frank Kanyak Stunt Coordinator

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    I have at my disposal a 7" diameter cardboard tube with the edges being 1/2 think making it 6" inner diameter. Can I use this for my 26"port??? Or should I go with a PVC???
     
  2. Patrick Sun

    Patrick Sun Moderator
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    As long as you seal it well where it mates with the endcap, this should be okay. Many speaker makers use cardboard tubes for their ports (but they usually have a nice plastic flared piece on the outside of the endcap/side to hide that fact).

    In fact, I used a Quikrete 8" wide tube for the port on my Sunosub I.
     
  3. Frank Kanyak

    Frank Kanyak Stunt Coordinator

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    Even though it is 1/2 thick? If so, great!!! I'm going to use the Grizzly Glue and maybe use (3) small "l" type braces to secure endcap to port with 3/4 particle screws. Great I just saved $15.
     
  4. Patrick Sun

    Patrick Sun Moderator
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    A tube's a tube. As long as it's functional, use it.

    And sonotube's thickness is around 1/4", and it'll be fine to use. Remember this stuff is used to form concrete structures, so it's strong.
     
  5. Kyle Richardson

    Kyle Richardson Screenwriter

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    I have used a 8" sonotube for a port before and it works just fine. Like Pat says, "A tube's a tube."

    Kyle Richardson

    Acoustic Visions
     

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