User Manual

www.redbackaudio.com.auRedback® Proudly Made In Australia8
Redback® A 4275C/85C 125/250W Mixer Amplier
Overview
1.6 LED STATUS INDICATORS
There are two led’s on the front panel which indicate when power is available and if there is a fault.
The fault led will turn on under the following conditions.
Overtemp
When the amplier reaches a dangerous temperature the unit will shutdown, preventing damage. If this occurs, check for
short circuits on the speaker line or objects blocking the ampliers air vents.
1.7 PROTECT MODE
If the amplier reaches a critical temperature or is over-driven it will shutdown.
The amplier has been designed with an in built protection mode which will throttle the amplifer back to 50% output if it
nears the shutdown temperature.
If the Protect Mode is active the amplier LCD will ash “ON” and “OFF” to highlight that there is a problem with the
amplier. The fault condition will be displayed on the screen.
1.8 LCD STATUS INDICATORS
The LCD is used to offer more detailed information about the status of the amplier.
The following elements can all be indicated on the display but may not be visible unless required.
• Signal presence
• Master Volume Level
• Amplier Output level in dB
• Remote volume level
• Current Limit Condition
• Voltage Limit Condition
• Heatsink Temperature
• 230V AC Presence
• 24V DC Presence
• Alert/Evac Activation
1.9 LCD OVERVIEW
Fig 1.9 shows the layout of the LCD.
1 Zone Label
The Amplier can be given a specic name so it is easily distinguishable. (Eg Sports Bar,Level 5 etc)
(see section 1.10 for more details).
2 Mains Status Indicator
Indicates when the unit has mains power.
3 24V DC Status Indicator
Indicates when the unit has a 24V DC backup supply connected.
4 Heatsink Temperature Indicator
Displays the temperature of the internal heatsink.
5 Protect Mode
If the amplier reaches a critical temperature the amplier will go into protection mode.
6 Current Limit Indicator
If the amplier goes into an over current status this indicator will come on. (see section 1.6 for more details)
7 Voltage Limit Indicator
If the amplier goes into an over voltage status this indicator will come on. (see section 1.6 for more details)