What type of interior door is best for keeping the sound in?

Discussion in 'Home Theater Projects' started by Dan Brown, Sep 8, 2004.

  1. Dan Brown

    Dan Brown Auditioning

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    What's being used out there?

    Thanks
     
  2. ChrisWiggles

    ChrisWiggles Producer

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    The heaviest and best sealed m-fing door and frame you can find.
     
  3. Wayne A. Pflughaupt

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    Elaborating on what Chris said, you want a solid core door. Fully sealing it all the way around with weather stripping, including an airtight threshold, will make a noticeable difference as well. However, that will also get you some air conditioning issues – i.e., you will have to have both an air outlet and return vent in the room.

    Regards,
    Wayne A. Pflughaupt
     
  4. Jay Mitchosky

    Jay Mitchosky Producer

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    This will be the weakest link in most rooms as it's such a big hole to "close". Wayne brings up a great point - the tighter the room is the more important your ventilation system will become. With a few bodies in an enclosed space (and equipment if that's where your rack is located) it will get stuffy and uncomfortable quick if there's nowhere for the air to go.

    I attended an HTF meet a couple of years back where we went to the Widescreen Review office and had a demo of their reference theater. The door they are using is probably a foot thick. When that thing is shut there is ZERO sound coming out of the that room. At best I heard a very subdued thump from the subs, about as intense as dropping a balled up sock on a solid floor. When the door opened Air Force One was blasting at reference level. It was amazing. That is a room where no corners were cut and essentially no limitations were placed so it can be perfectly isolated from the rest of the building.
     
  5. chris_everett

    chris_everett Second Unit

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    I'm using a solid wood commercial type exterior door. Even with a totally sealed door jamb, It's the weak point in my sound isolation. It's not bad, but it's not as great as I'd like either. I might add a layer of Mass Loaded Vinyl to the inside of the door to help further. I'm getting about 27dB of isolation right now.
     
  6. Dan Brown

    Dan Brown Auditioning

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    Thanks for the info, guys. I'm going to look into getting a solid-core fiberglass exterior door. The weather stripping should really help too. The HT has 4 large registers and a return air. The HT and garage will be sharing a 2.5 ton Bryant Puron heat pump.
     

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