Generally, detailed information about their products can be found on each manufacturer's website, and test results are also available online.
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There are rooms that have a lot of echo which can be detrimental to the audio experiences of some concerts or video conference meetings and can have a negative effect on the comfort of the audience. Such a room may require a professional acoustic tests and the use of acoustic panels as well.
A too bright room can have a detrimental effect on image quality and the viewer experience, so dimming should be considered part of the AV solution, as should the hardware.
The effective operation of a projection system may depend on the direct light of the projected surface as well as the overall ambient brightness of the room. This may require higher lumen value systems.