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Channel-to-Channel Failover
All amplifiers support Channel-to-Channel failover. This is configured in the Vocia Software in the
amplifiers General Setting as 1:1 Failover. In this configuration, channel pairs can be specified and
adjacent channels will act as a redundant backup.
Channel failover is triggered by one of the following conditions:
Over temperature
Short Circuit fault
Channel Failure fault
ELD-1 / PLD-2 speaker line fault if enabled in software
The primary amplifier channel will resume control after the fault condition is cleared and the unit is re-
powered.
Amplifier Output connections
2
1
-
-
-
-
+
+
+
+
Failover
Primary
Channel
Channel
3:1 and 7:1 Failover
The VA-4300CV amplifier supports 3:1 channel redundancy. This is configured in the Vocia Software in
the amplifiers general setting as 3:1 failover. In this configuration channel 4 will act as a redundant
backup for channel 1, 2 or 3.
The VA-8150CV amplifier supports 2 x 3:1 or 7:1 channel redundancy. This is configured in the Vocia
Software in the amplifiers general setting. In 2 x 3:1 configuration, channel 4 will act as a redundant
backup for channel 1, 2 or 3 and channel 8 will act as a redundant backup for channels 5, 6 and 7. In 7:1
configuration channel 8 acts as a redundant backup for channels 1 to 7. The first channel to fail will take
priority on the redundant channel.
The primary amplifier channel will resume control after the fault condition is cleared and the unit is re-
powered.
4
-
+
+
Redundant
Channel –
No Connection
Amplifier Output connections
2
Speaker
-
-
+
+
Failover
Channel
Amplifier Output connections
3
-
-
-
+
+
1
Speaker
-
-
+
+
2
-
-
+
+
C
B
Amplifier Output connections
2
1
Redundant Speakers
-
-
-
-
+
+
+
+
A
Failover
Channel
1
-
-
+
+
A
B
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