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 […]
Redback Audio will be in attendance at this years ENTECH Roadshow presented by CX Magazine. The compact and convenient local venues make ENTECH Roadshow the perfect opportunity for integrators, designers and end-users to get face time with the best suppliers and manufacturers in a vibrant one day event. Rather than having miles of aisles to wander […]
When designing PA systems, especially those for fire/evacuation announcement systems, SPL at a given distance can be a critical measurement. This handy calculator allows you to determine the dB level at a given distance by inputting SPL rating 1W/1m, listening distance (such as distance to bedhead) and power tap selection. This can be used with […]
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 […]
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 […]
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 […]
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 […]