• Re: Built-in Bass Traps - Ethan Winer 10:09:16 05/11/05 (5)
  In Reply to: Built-in Bass Traps posted by gcw on May 1, 2005 at 15:13:34:

  GC,

  > Can I build bass traps in 2 or 4 corners with OC 703/705 (2" or 4") installed diagonal in a corner - floor to ceiling and covered with cloth? <

  Yes, but make them four inches thick. Two inches is not enough for bass trapping.

  > I had asked in another forum about building soffets out of 703. <

  Sure, that will work fine. But again, use 4-inch thick panels.

  --Ethan
  
  

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  • Re: Built-in Bass Traps - dgainer 23:34:13 05/11/05 (4)
    In Reply to: Re: Built-in Bass Traps posted by Ethan Winer on May 11, 2005 at 10:09:16:

    

    Here's another alternative to a fiberglass corner bass trap (see URL) that's called several by several names like a membrane or resonant panel bass trap. It has a lower resonate (this one's <100Hz) frequency than a pressure zone fiberglass basstrap and doesn't remove any high frequencies from the room.
    
    

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    • Re: Built-in Bass Traps - Ethan Winer 11:29:33 05/12/05 (2)
      In Reply to: Re: Built-in Bass Traps posted by dgainer on May 11, 2005 at 23:34:13:

      DG,

      > Here's another alternative to a fiberglass corner bass trap <

      Most rooms will do better with plain rigid fiberglass. Tuned traps can work very well, but they affect a narrower range of frequencies. So you need to build several types to cover the entire low end.

      --Ethan
      
      

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      • Re: Built-in Bass Traps - dgainer 18:38:49 05/12/05 (1)
        In Reply to: Re: Built-in Bass Traps posted by Ethan Winer on May 12, 2005 at 11:29:33:

        Ethan,

        I appreciate your opinion but I don't think things are that simple. I've used both types and more to good effect but specific to the job, cost and difficulty of construction. There are several types of bass absorbers that might be apropriate given different circumstances.
        
        Since we have so many questions about bass absorbers maybe one of us (collectively) would like to start a thread on the merits and descriptions of different uses for different types. I'd contribute.
        
        
        

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        • Re: Built-in Bass Traps - Ethan Winer 09:48:03 05/13/05 (0)
          In Reply to: Re: Built-in Bass Traps posted by dgainer on May 12, 2005 at 18:38:49:

          DG,

          > I don't think things are that simple <

          It really is, in most cases anyway. Some peaks and nulls are determined by the room dimensions, but just as many others are related to placement of the loudspeakers and listener position. By the time you figure all of the low frequencies that need attention you'll have ten or even more frequencies to treat. And then you can fit only one trap of each type, which doesn't give enough absorption at any of them.

          This is why I always advocate broadband absorption that works to as low a frequency as possible. If a room has severe problems, such as when it's 16 by 16 by 8 feet, then perhaps a few tuned traps can be used in addition to the broadband LF absorption. But since tuned traps are no more effective than properly designed broadband traps, I still see no real advantage to using the tuned type.

          > maybe one of us (collectively) would like to start a thread on the merits and descriptions of different uses for different types. <

          Your input is certainly welcome. I have already written extensively about this, including my article from Electronic Musician magazine last year, now on my company's site here:

          www.realtraps.com/art_small_rooms.htm

          I'll be glad for you and I (and others) to continue the discusssion here if you'd like.

          --Ethan
          
          

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    • Re: Built-in Bass Traps - dgainer 23:38:52 05/11/05 (0)
      In Reply to: Re: Built-in Bass Traps posted by dgainer on May 11, 2005 at 23:34:13:

      Oopps! I put the link I the wrong place and no drawing showed up.
      

      • basstrap   (Open in New Window)

      
      

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