Blog

May 11, 2017

School Lockdown Systems Explained

Schools in Australia are now required to have protocols in place for conditions that require the campus to be locked down. These types of events are unique in that they require students and staff to remain within the confines of the school rather than be evacuated. The definition of a lockdown would be a situation [...]
March 20, 2017

Balanced vs Unbalanced Audio – What’s the difference?

  Public address systems typically feature two types of signals, commonly known as balanced and unbalanced. In order to minimise signal path noise and get the right output level for your system its important to choose the right lead for the right job. First lets discuss the types of signals, balanced and unbalanced. Unbalanced Signals […]

Guides
March 13, 2017

Programming the Redback Yearly School Timer.

  The A 4510 Yearly School Timer has been designed to keep schools running on time by providing scheduled announcements through the PA system. We have put together a quick guide here to help with setting up a new installation in a school. This is ideal for the installer to use, or as a reference […]

Guides, How To
October 14, 2016

Hearing Loop Systems Explained

What is a hearing induction loop?  An induction loop or otherwise known as a “hearing loop” or “t-loop” assists the hearing impaired by providing sound directly to a hearing aid via an induced magnetic field. This is done by looping copper around the room. Induction loops can be the size of a small meeting room […]

Guides
September 16, 2016

Basic Redback Amplifier Troubleshooting

  As installers know, the variables involved in any installation can number in their thousands and any single one of those variables represents a possibility of a fault. Typically these system issues are down to genuine errors, often made in the rush to get the job done for client who doesn’t want to wait. In […]

How To
August 18, 2016

Choosing the right cabling for a 100V line speaker system

A 100V line speaker system is tremendously flexible when you consider the distances over which speaker signals can be transported. Each speaker circuit is capable of being run over huge distances, but it is still important to consider cable losses. With all electrical connections the loss of power increases as the length of the cable […]

Guides
August 18, 2016

What is ‘100V Line Monitoring’?

Line monitoring is an essential part of 100V line speaker systems which form the part of a fire and evacuation system. It allows monitoring of each speaker zone circuit for open and short circuit faults by measuring the impedance of the line. This allows the user to centrally monitor the status of each speaker zone [...]
July 19, 2016

Understanding 100V Line Distributed Speaker Systems.

Commercial audio installations often require large numbers of speakers to be powered from a single amplifier. These systems often called “100V line” or less common in Australia “70V line” are found in most large buildings including shopping centres, schools, offices etc. These audio systems are typically used for general announcing, public address, background music and […]

Guides