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Overlay Flush
If the device has been used in Module Groups, and still has an active Overlay (as indicated by the
Overlay indicator), these can be removed in the System Engineer application by selecting Modules
Overlays
mode and removing any modules for this device from all groups. See
.
Revert to Factory Settings
If you wish to erase all of your settings in the device and revert everything to factory settings, then
simultaneously press and hold for 5 seconds the Up button and the Mute 1 button, then follow the
prompts on the display. Only continue by pressing the Enter button if you are sure this is what you
want to do. Otherwise, press the Down button to escape. Alternatively, you can access this feature
from System Engineer application using the 'Hamburger' button on the bottom-right of the device
control panel, selecting 'revert to factory settings'.
Protection Systems
Comprehensive protection features preserve the longevity of the loudspeaker and amplifier by
continuously monitoring several critical parameters, and reducing the gain, or muting the amplifier
either temporarily or permanently depending on the nature and seriousness of the fault or misuse.
The amplifier will recover and restart if at all possible, but may remain in shut down if a serious fault
persists.
Limiters deal with routine over-driving of the amplifier, making sure that the driver(s) are not pushed
too hard. The limiter indicators will warn you when the driver is being driven into limit.
Minor faults are dealt with by 'dimming' the amplifier, reducing the level to a sufficient degree and for
a sufficient time that the amplifier is able to recover gracefully without any user interaction. When
the fault condition has passed, the amplifier will recover automatically.
When the protection systems are reducing the level, this is indicated by illuminating the left-hand
Amplifier channel protection indicator. This will also illuminate when the output voltage is 'clipping'.
This indicator will remain permanently illuminated if the channel has been muted by the protection
systems. The Mute button will also flash. Some types of protection affect all output channels, so you
may see the Amplifier indicator illuminated, and the Mute indicator flash, on every channel. Note that
the 'Locate' feature in System Engineer will also cause the Mute indicators to flash.
Summary of Protection Indication
The reasons for the protection indicators illuminating are summarised as follows:
Amplifier Indicator
Driver Indicator
Notes
Limiter 6dB over
Thermal limiting
Excursion limiting
Amplifier clipping
Amplifier clip limiting
Amplifier Current
limiting
Amplifier VHF limiting
34
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