Personal Address Systems - also known as 'Loudspeaker' systems - broadcast a live event to a live audience. Room acoustics can make an average system sound terrible. Problems like echo, feedback and dead zones can be overcome with proper engineering. Larger systems can accommodate a live audience of thousands in a fixed auditorium. Smaller systems can be portable, hand held, and speak to a few listeners. Wireless microphones can be a source of constant frustration with potential problems such as static, fading, and signal loss. Wireless microphones can also be a great addition, giving the speaker freedom to move about an area. The difference is knowing how to implement beneficial technology to meet your needs.