Several parameters must be taken into account when selecting speakers. Depending on the final application (speech, music), we will require speakers with a specific frequency response, which in turn will affect the number of speakers required, since a uniform sound pressure level must be guaranteed throughout the entire room. The polar diagram of the chosen speaker also influences acoustic coverage, since omnidirectional speakers cover more surface area with fewer units, but typically with lower sound pressure.
The room itself imposes physical parameters regarding the size and format of the speaker. Mechanical criteria, in turn, will determine whether they should be surface-mounted or flush-mounted, or whether they should be mounted on the floor, wall, or ceiling.
The above factors allow for the selection of the most appropriate type of speaker, which will lead to the specific model once the aesthetic and economic aspects have been analyzed. It will then be time to determine the power required to achieve the required sound pressure level and consider the final physical distribution of the speakers, their installation height if required, or the advisability of creating clusters to ensure uniform acoustic coverage.
