Public Address system — the microphones, amplifiers, and speakers used to deliver sound to the audience.
A PA system is the core audio infrastructure of any event. It typically consists of microphones (handheld, lapel, or headset), a mixing console, amplifiers, and main speaker stacks plus delay speakers for larger rooms. The front-of-house engineer operates the mixing desk during the event to balance volume and quality. PA system specifications must match the room size and acoustic properties of the venue.
AV
Audio/Visual — the equipment and services covering sound, video projection, screens, lighting, and related technology.
Load-In
The process of bringing all equipment, staging, and décor into a venue before an event begins.
Strike
The process of dismantling and removing all equipment and décor from a venue after an event ends.
Sound Check
A pre-event test of all audio equipment with performers or presenters to confirm levels and quality.
Line Check
A quick technical check of each audio input to confirm it is connected and functioning before a full sound check.
Tech Rehearsal
A run-through of the event programme focused on technical elements — lighting, sound, video, and transitions.