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Questions and answers
A question of home theatre room acoustics
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Home theatre basics
Q. What should I be aware of in when creating my home theatre room?
A. Bare surfaces such as gyprock walls can cause reflections. These can add harshness to the sound or make the dialogue in a movie indistinct. Carpeting, curtains and large well-cushioned carpeting and drapes help to keep them in check, but too much absorption on your room will make bass dominant and the midrange and treble recessed. The advice here is to make small changes until you arrive at the optimum.
If you have a choice avoid rooms those that are square or have one dimension twice that of the other. Either scenario can cause resonance (a howling sound) that can easily colour the sound and make it unacceptable.
Place your seating so the listeners are level with or slightly in front of the rear surround effect speakers. Experiment with speaker positioning - the closer a speaker is to a wall the more it will emphasize bass. The further away, the less bass there is. Experiment.
Remember that if the set-up of your room is ideal for one type of movie, it may not necessarily so for another.
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