Diffusors (Manufacturer Comparisons)

Discussion in 'Recording/Live Sound' started by Glide, May 10, 2008.

  1. Glide

    Glide Member

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    I am finishing up a studio in my basement and I have started looking into diffusors for the back wall. I have absorption covered using Owens Corning 703's in clouds and wall panels, and I'll have it in the corners for bass traps. All of that is pretty straight forward, but in the realm of diffusion there are so many options (and costs). Most of these below have an open back where you can insert 703 for low end absorption (below 500 hz) but that's not the case with doing the homebuilt version at the bottom. Also, the Space Coupler methodology seems interesting - thoughts?
    If any of you have reasearched or know more about which method of diffusion works well please let me know.
    Here are some manufacturers.

    GIK (http://www.gikacoustics.com/gik_d1_diffusor.html):
    [​IMG]

    Real Traps (http://www.realtraps.com/diffusor.htm):
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    Auralex Metro Fusor (http://www.auralex.com/sound_diffusor_metrofusor/sound_diffusor_metrofusor.asp):
    [​IMG]

    Auralex T Fusor (http://www.auralex.com/sound_diffusor_tfusor/sound_diffusor_tfusor.asp) :
    [​IMG]

    Auralex Space Coupler (http://www.auralex.com/partscience/spacecoupler.asp):
    [​IMG]

    RPG Skyline Diffusor (http://www.rpginc.com/products/skyline/index.htm):
    [​IMG]

    Here you can see it on the back of a listening wall:
    [​IMG]

    RPG Qrd Diffusor (http://www.rpginc.com/products/diffractal/index.htm):
    [​IMG]

    Here is a home-built. I am thinking about doing this myself, on the entire back wall.
    [​IMG]

    What makes any one of these better than the others? Which would you stay away from?
    Thanks for any help.
     
  2. Glide

    Glide Member

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    Also guys, have a look at Blackbird Studio C Control room in Nashville. I believe there are 133,000 sticks. This is John McBride's studio (husband of Martina McBride) and her recording takes place here. Also, in studio "A" I believe the ceiling is motorized so you can raise or lower it to your liking.
    http://www.blackbirdstudio.com/

    [​IMG]
     
  3. MichaelK

    MichaelK Member

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  4. drfrankencopter

    drfrankencopter Member

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    Note that in John McBride's studio there are also polycylindrical diffusors on either side of the front wall. Oh, and nice monitors too (ATC's...looks like 150SL's)

    What kind of diffusion do you want? 1D (horizontal or vertical), or 2D (horizontal and vertical)? What frequencies do you want diffused? This affects the depth of the wells. How far away are you going to be from it? Diffusors need some breathing room in order to fully 'mix' the sound...too close and it can sound a little like comb filtering.

    In my room I'll be going for a home built QRD, but with wider wells....not optimum, but really I don't need tons of diffusion, just a way to break-up the reflections from the back wall. You can stuff lots of insulation behind QRD's to make em help with bass absorbtion. For ceilings I'd look at omni-fusors, or skyline type designs...2D makes sense there.

    Cheers

    Kris

    PS: The Auralex space coupler is not a diffusor per-se, it's intended to split a room into two sections, and give a smooth reverb tail. It might work a bit like a diffusor, but not an efficient one. The Space Array is the auralex product worth looking at...it's their take on an RPG omni-fusor.
     
  5. Glide

    Glide Member

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    Thank you Kris - I appreciate the insight.

    The back wall will be about 17 feet behind me. I am thinking about doing a home-built skyline with owens corning 703 behind it across the back wall. I'll have absorption covered in panels and clouds along with traps in the corners.
     

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