Accoustical Treatments

Discussion in 'Home Theater Projects' started by Adam Smasher, Oct 21, 2004.

  1. Adam Smasher

    Adam Smasher Extra

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    Has anyone made accoustical treatments that actually work well. I would like to treat my HT, and need some ideas to get started. Thanks Adam
     
  2. ThomasW

    ThomasW Cinematographer

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  3. Adam Smasher

    Adam Smasher Extra

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    Thanks. Anyone else?
     
  4. Ethan Winer

    Ethan Winer Stunt Coordinator

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  5. AndyF

    AndyF Agent

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    I know that Owens Corning 703 and 705 are popular components of DIY panels. As I was strolling through the local BORG, I found some acoustic ceiling tiles with a backing that looks similar but is 5/8" thick. Having never seen 703/705, can you stack two or three of these ceiling tiles to get something similar? (I think you can peel off the white covering.)

    The tiles (2'x4'x5/8") were USG Ceilings R2310 Radar tiles.
    Data sheet: http://literature.usg.com/pdf/SC2288.pdf


    The price was $30 for 8 2'x4' panels.


    Wrong stuff?
     
  6. Ethan Winer

    Ethan Winer Stunt Coordinator

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    Andy,

    That's the right stuff, and you can peel off the plastic facing and stack them together. The only downside is it's pretty expensive if you plan to make many panels. And those ceiling tiles are so thin you'll need 4-8 of them to make each final panel.

    --Ethan
     
  7. AndyF

    AndyF Agent

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    Yikes!!!

    Probably just stick with the regular fiberglass until the money tree grows back...

    thanks.
     
  8. Chris White

    Chris White Second Unit

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    Go to my website (click on signature), then to the HT DIY Projects page. There you will find links to half a dozen DIY pages (including my own) on acoustical treatment.
     
  9. Nat Ward

    Nat Ward Agent

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    I know that thicker is better (at least for helping reduce lower frequencies), but how thick is necessary for a room that fails the "clap test?" My room is horrible, and dialog from my center channel is getting messed up from reflections off my back wall. Due to the room shape I've got the couch placed right against the rear wall which can't be helping either. I'd like to have 2" thick panels when finished, how much can you compress fiberglass? Will 2" thick panels provide any help in the mid/upper frequencies? This looks like a simple fun project I'd like to try. Thanks.
    Nat Ward
     
  10. ThomasW

    ThomasW Cinematographer

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    It's called 'slap echo'

    The first thing to do is what's called "the mirror trick" to locate the first reflection points.

    Yes you can compress the fiberglass. The standard R-11 could be compressed into a 2" space. And yes that will certainly absorb midrange and higher
     
  11. Ethan Winer

    Ethan Winer Stunt Coordinator

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    Nat,

    > Will 2" thick panels provide any help in the mid/upper frequencies? <

    Yes, absolutely.

    --Ethan
     
  12. Dan Magnin

    Dan Magnin Stunt Coordinator

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    Is there any benefit to using roxul insulation instead of fiberglass insulation for acoustic panels?
     
  13. Hank Frankenberg

    Hank Frankenberg Cinematographer

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    I'll throw in a tip here. One of our DIY "meeets" was in my garage where we made some panels. For outer covering, we used burlap, which is very acoustically open material. I went to a Hobby Lobby store and found they had burlap in about a dozen colors! So, it's possible to have a WAF-friendly acoustic absorber (let her pick the burlap color). Also, it's a far better looking material than I thought it would be. I had imagined the look of an old burlap potato sack when I heard of it being available as yard goods.
     

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