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  1. #1
    Join Date
    Oct 2002
    Posts
    1,252

    Studio duct work

    I need info on designing duct system to supply studios. Needs to isolate sound. Any hints or links.

  2. #2
    Join Date
    Mar 2003
    Posts
    7,321
    really depends on how critical noise is. There are many ways to do this. for example, in tv studios, we often see very large ductwork and virtually no static pressure. lots of air changes, but almost zero noise. lots of diffusers to simply allow air to drop to the conditioned space near the news desk. with a very large return on the opposing side of the room. cooling is staged on by return air temp in many cases we see, and usually on a reset schedule to prevent overcooling. due to the widely varying loads, you typically also see electric reheat for humidity control.

  3. #3
    Join Date
    Jul 2011
    Location
    East coast USA
    Posts
    960
    a few other ideas are, insulated lined supply and return ducts, if this is a plenum return Z boot returns. As duct work goes through the walls add flex collars, use duct board (least favorite) but if your concerned with the sound of "air" Flange is right on.

    But much also depends on the design of the space, walls, floor, etc..

  4. #4
    Join Date
    Dec 2002
    Location
    Arizona
    Posts
    4,334
    You can also buy sound deadening flex for your last 6' to 8' of connection. Talk to your supplier, as this is made for what your looking for.
    Make your expertise uniquely valuable.

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  5. #5
    Join Date
    Apr 2006
    Location
    mechanical room
    Posts
    1,255
    what about that cloth duct ? starting to see it more in supermarkets .

  6. #6
    Join Date
    Oct 2002
    Posts
    1,252
    Jimi- Have a product name. I'm not having any luck finding.

    Cool... Link to this product. Doesn't sound like a flag flapping in the breeze...does it?

  7. #7
    Join Date
    Jan 2005
    Location
    Detroit Michigan
    Posts
    53
    I think he was referring to Duct Socks
    http://www.ductsox.com

  8. #8
    Join Date
    Feb 2012
    Location
    San Jose, CA
    Posts
    18
    I agree with the suggestions from flange, dlove, and jimj .

    Don't forget to also consider the noise from fans and compressors. Large systems use different design approach than a small system. Not sure what you have.

    And don't forget the structure and architecture affects. And location, location, location of the noise making items.

  9. #9
    Be careful when using the fabric ductwork - although it is forgiving with regard to noise generated in the duct compared to sheet metal, it is terrible at keeping noise inside the duct. Any noise you have in your duct path when you hit the fabric will pass through the duct wall so you'd better knock the noise down before the metal-fabric transition.

  10. #10
    Join Date
    Sep 2007
    Location
    Boise, ID
    Posts
    4,250
    This topic has been discussed several times on this forum. Do a search.
    If a nation expects to be ignorant and free, in a state of civilization, it expects what will never be. (Thomas Jefferson 1816)

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