Specifications

Multi Room Audio Matrix Switcher and System Installation Instructions
25
Symptom Possible Explanation
Dynamic labels don’t work on a
C-Bus DLT wall switch.
There are several options that need to be
selected for labels to function. These options
are located:
on the More panel accessed by clicking the
“More....” button on the amplifier’s C-Bus
Control tab in Toolkit.
on the DLT wall switch’s Global tab in
Toolkit.
on the Zones branch of the Project tree in
MARPA.
An amplifier switches off,
particularly when the volume is
loud.
If insufficient current is available for the
Amplifier, it will switch itself off. This may
occur if the amplifier receives its power from
a matrix switcher. The amplifier may need its
own external power supply unit.
An Amplifier emits a high-pitched
screeching sound when a
particular source is selected.
This may occur if an output of an amplifier is
connected to the input of the matrix
switcher. Such a connection should be
avoided as it can cause a feedback loop.
Audio is not broadcast via the
matrix switcher’s high priority (HI)
broadcast input.
The level of the audio connected to the
broadcast input may not be sufficient to
trigger the broadcast.
Cannot hear any sound when
using the optical input
The digital audio source may be connected
to the optical output instead of the input (on
a matrix switcher). Some digital audio
formats (such as surround sound) are
incompatible with the MRA system.
Table 11. Troubleshooting symptoms and possible causes