Sometimes the PA system is used to reinforce a conference or class, a debate with an audience, a roundtable discussion, or in a church. In this case, the selection of components, their location, and sizing are crucial. Important aspects to consider:
- Avoid dead zones, with insufficient audio level, to ensure intelligibility throughout the auditorium and prevent acoustic feedback, which results from increasing the system gain when trying to achieve a clear sound in poorly covered areas.
- Using multiple microphones to properly capture the conference involves a risk of reducing the system's gain margin until acoustic feedback occurs.
- The maximum gain depends on the location of the speakers, microphones, and the auditorium. Of course, the architecture and acoustic conditions of the venue are also important factors. Equalizers and feedback suppressors are used to ensure the system works properly.
