Home Cinema Installations and Sound Transmission Through Doors

The reference amount of a soundtrack is 105db and 115db for the LFE channel. A lot of people would find these levels quite high, but not so difficult to hear, in a correctly designed home cinema room.

An issue occurs though, when we face the task of keeping the noise inside the cinema room. In a residential installation, quite often we find bedrooms and other living areas to be right next to your home cinema room. Special room construction techniques allow us to construct a sufficient noise barrier, in order to reduce any sound transmission to the adjacent rooms.

However, doors have been the weakest point, in this multi room audio installation  kind of attempt. The mass, damping and stiffness of the house cinema door will determine its resistance to the passage of any sound waves. A door’s ability to lessen noise is given by its Sound transmission Class. This implies, the higher up the Class the higher the efficiency.

Yet another problem arises though; Sound waves can travel through any opening with almost no loss. And to top it off, a tiny hole in a barrier would transmit almost the maximum amount of sound as a much bigger hole. This acoustic property of sound might be a serious issue in a home cinema installation, where good quality construction is required. That’s where acoustical gaskets enter into play. A property cinema door, in order to be effective, the seals around the pinnacle, jamb and sill must certanly be complete and air-tight.

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