Posted by shiitakexxx (A) on September 22, 2006 at 06:27:32

What are the drawbacks of covering corning 703 with fabrics that are not entirely acousticly transparent? Speaker cloth is expensive and not all that attractive. Thankyou.

• Re: covering rigid fiberboard - Ethan Winer 14:00:06 09/22/06 (2)
  In Reply to: covering rigid fiberboard posted by shiitakexxx on September 22, 2006 at 06:27:32:

  > What are the drawbacks of covering corning 703 with fabrics that are not entirely acousticly transparent? <

  For bass frequencies it probably doesn't matter what fabric you use. But when the goal is to absorb mid and high frequencies, for example at first reflection points, you don't want fabric that's reflective. However, this does not mean you need "acoustically transparent" fabric either. It's not like cloth in front of a tweeter! If a fabric over 703 absorbs a little more on its own no harm is done.

  --Ethan
  
  

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  • Re: covering rigid fiberboard - Tippy 16:39:13 10/11/06 (1)
    In Reply to: Re: covering rigid fiberboard posted by Ethan Winer on September 22, 2006 at 14:00:06:

    Just for clarification: what do you mean by "that is not reflective"? For example, how about a woven wool (Navaho) rug, a cotton print fabric, burlap, a tightly woven wool or polyester fabric, a very loose batik fabric, etc.?
    
    

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    • Re: covering rigid fiberboard - Ethan Winer 13:30:06 10/12/06 (0)
      In Reply to: Re: covering rigid fiberboard posted by Tippy on October 11, 2006 at 16:39:13:

      Reflective fabrics are those like silk or synthetic equivalents. One standard test is to hold a proposed fabric to your face and try to blow through it. If air passes easily then it's probably okay. A much better test is to "talk into" it and see how it sounds. Though it helps to know what different amounts of reflectivity sound like.

      --Ethan
      
      

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