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Bandpass Plexiglass thickness

Discussion in 'Subwoofer Box and Custom Fabrication' started by jcurry05, Mar 12, 2007.

  1. jcurry05

    jcurry05 Full Member

    I got a bandpass box with two Infinity perfect 10.1s and throughout the use I noticed that a crack in the plexiglass began to form. It did not sound any different so I was not in any rush to replace it but then yesterday I noticed that my woffers sounder really bad, bad enough that I thought I may have blown one of them. I saw that nerly half of the screws that held the plexiglass on were not tight anymore and the glass was vibrating It even broke one of the screws. I was wondering it the plexiglass I used was oo thin because it does vibrate alot even when the screws are tight but it was the thickest I could find (about 1/8 to 1/4 an inch). Does anyone have any suggestions as to what thickness glass or use and what type of screws?
     
    jcurry05, Mar 12, 2007
    #1
  2. pedro quiroga

    pedro quiroga Well-Known Member

    maybe double up on the glass.or brace it some how.
     
    pedro quiroga, Mar 12, 2007
    #2
  3. DMP

    DMP Full Member

    If you can find 3/4" or 1" thick plexiglass it definately wont vibrate or crack. Maybe look through your local yellow pages to see if you can find someone who sells it. Its definately out there though. ;)
     
    DMP, Mar 12, 2007
    #3
  4. aznboi3644

    aznboi3644 Full Member

    1/8-1/4 is way too thin...it would flex too much.

    try to get some 3/4 or thicker
     
    aznboi3644, Mar 12, 2007
    #4
  5. TheViking

    TheViking Well-Known Member

    Yep, at least 3/4, and 1 inch if its a very large area.


    Pedro, your thought on doubling up the plexi is well intended no doubt, but i have to disagree with that idea due to the fact that the two layers would resonate and create a nice buzz sound I am wilingl to bet!
     
    TheViking, Mar 13, 2007
    #5
  6. jcurry05

    jcurry05 Full Member

    Yea I think Ill go with 1 inch thick because the area I have to cover is 22 3/4 x 11 inches. Thanks for the info.
     
    jcurry05, Mar 14, 2007
    #6
  7. jtdouglas

    jtdouglas Full Member

    There is a company on ebay that sells acrylic and plexi. I have bought a ton of plastic off of them they are great. Their names are estreetplastics. They have a ebay store.
     
    jtdouglas, Mar 28, 2007
    #7