School PA and bell systems are often thought of as simple everyday tools.

• The bell rings
• Announcements are made
• Students move between classes
• Staff communicate across the campus

But when that system becomes unreliable, schools quickly realise how important it is. A PA and bell system is not just background infrastructure. It supports daily operations, student movement, staff coordination and emergency communication.

Masters Voice Technology recently published a case study on the PA and bell system redevelopment delivered for Leichhardt Public School, where failed legacy infrastructure was replaced with a modern Q-SYS-based communication platform. The upgrade restored school-wide paging, automated bell scheduling, emergency alert functionality and clearer audio coverage across classrooms, corridors, administration spaces and outdoor zones.

Moving beyond traditional school bell systems

Older school PA systems often rely on separate pieces of equipment for bells, paging, tones, amplification and manual control. Over time, this can create a system that is harder to manage, harder to troubleshoot and less flexible when the school needs to expand or change.

Modern school environments need more than a basic timer and loudspeakers.

They need:

• Reliable scheduled bells
• Clear school-wide announcements
• Zoned paging for different areas
• Emergency alert and evacuation messaging
• Simple staff control
• Networked audio distribution
• A platform that can grow with the school

For Leichhardt Public School, the system needed to support both everyday communication and safety-critical operation. The project challenge included restoring reliable paging and bell operation, improving speech intelligibility, replacing failed legacy PA infrastructure and providing a simple interface for administration staff.

A more integrated approach

The Leichhardt Public School project shows how school communication can be brought into one connected workflow.

Instead of treating bells, paging, emergency tones and audio distribution as separate systems, the redevelopment connected them through a Q-SYS control and processing platform with Dante audio networking, commercial-grade amplification and distributed loudspeakers.

This type of design allows school staff to manage core functions from a simpler control environment while still giving the system enough technical depth to support a live campus.

The workflow can be understood in four practical steps:

Step 1 — Manage bell schedules
Daily bells, start times, finish times, special timetables and holiday exclusions can be scheduled through the system.

Step 2 — Make targeted announcements
Staff can send announcements to selected areas or the whole campus, depending on the message.

Step 3 — Prioritise emergency alerts
Lockdown, lockout, evacuation and all-clear messages can override normal operation when urgent communication is required.

Step 4 — Deliver clear audio
Networked audio, amplification and distributed loudspeakers help deliver bells, announcements and alerts across classrooms, outdoor zones and shared areas.

Why Q-SYS suits school communication

A school PA and bell system needs to be easy for staff to operate, but it also needs to be technically reliable. This is where platforms such as Q-SYS can be useful.

Q-SYS can combine audio processing, control logic, user interfaces and networked audio into one software-based environment. In the Leichhardt Public School project, the platform was used to manage paging, bells, audio routing, emergency alerts and staff control interfaces from one integrated system.

For schools, the benefit is not just technical flexibility. The real value is operational simplicity.

Administration staff do not need to understand the complexity behind the system. They need a clear way to manage bells, make announcements and activate emergency messaging when required.

School audio is also about intelligibility

A PA system is only effective if people can clearly hear and understand the message.

In schools, this can be challenging. Audio needs to reach classrooms, corridors, administration spaces, playgrounds and outdoor areas. Some areas may need routine bells. Others may need voice paging. Emergency messages may need to be heard clearly across the entire campus.

The Leichhardt Public School upgrade focused on improving speech intelligibility and delivering consistent audio coverage across school zones, supported by Dante audio networking, commercial amplification and TOA distributed loudspeakers.

The bigger lesson for AV Integrators

This project highlights an important point for the AV industry: school PA and bell systems should be treated as critical communication infrastructure, not just audio hardware.

A well-designed school communication system can improve:

• Daily school operations
• Staff communication
• Bell reliability
• Emergency readiness
• Speech clarity
• Future expansion
• Long-term supportability

For AV integrators, this creates an opportunity to design systems that are practical, scalable and aligned with how schools actually operate each day.

Read the full case study

Masters Voice Technology has published the full Leichhardt Public School case study, including the project challenge, system workflow, Q-SYS solution, Dante audio networking, technology delivered and final outcomes.

Read the full case study:
Leichhardt Public School — PA & Bell System Redevelopment