Connecting the Unit - Audio Inputs & Outputs
PAGE 6
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
AMP. BYPASS
ADD
LINK
OPEN
IN
OUT
IN
OUT
AMP1
AMP2
IN
OUT
IN
OUT
AMP3
AMP4
IN
OUT
IN
OUT
AMP5
AMP6
IN
OUT
IN
OUT
AMP7
AMP8
IN
STDBY
DC 24V
-
+
+IN
GND
-IN
+OUT
GND
-OUT
AMP1
+IN
GND
-IN
+OUT
GND
-OUT
AMP2
+IN
GND
-IN
+OUT
GND
-OUT
AMP3
+IN
GND
-IN
+OUT
GND
-OUT
AMP4
+IN
GND
-IN
+OUT
GND
-OUT
AMP5
+IN
GND
-IN
+OUT
GND
-OUT
AMP6
+IN
GND
-IN
+OUT
GND
-OUT
AMP7
+IN
GND
-IN
+OUT
GND
-OUT
AMP8
+OUT
GND
-OUT
STDBY
A B
1
8
16
8
4
2
1
32 64 128
FAULT
NO
CONTACT
RS 485
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
LINK
OPEN
BALANCE AUDIO SIGNAL
Audio
input 1
Audio
input 2
Audio
input 3
Audio
input 4
To
amplifier
input 1
To
amplifier
input 2
To
amplifier
input 3
To
amplifier
input 4
To
amplifier
input 7
To
standby
amplifier
input
Link
Switch
1
Link
Switch
2
Link
Switch
6
The above connections illustrates connections between input signals from BGM sources such as Pre-amplifier mixer or
Matrix controller to the inputs of power amplifiers.
Audio source 1 shall feed to amplifier 1 :
- Link switch 1 shall be switched to OPEN position
Audio source 2 shall feed to amplifier 2 - 5 :
- Link switch 2, 3 and 4 shall be switched to LINK position
- Link switch 1 and 5 shall be OPEN to for isolation from audio input 3
As power amplifier 6 does not share the same audio source from BGM 3 and 4, both link switch 5 and 6 shall be in
OPEN position.
There is no incoming connection at the last connector for standby but the input at standby amplifier shall be connected
to STANDBY terminal.
Standby amplifier
terminal
If only a single audio source is used to cater for all amplifiers :
In this case, only connect the input at terminal Amplifier 1 and switch to LINK at all link switches.
Input and output signals from AX3800 shall have unity gain. Every output to amplifiers has been buffered and therefore
signal degradation due to multiple looping shall not occur from AX3800.
However, a single output from this terminal should not be fed to more than 6 amplifier to avoid signal drop. We recom-
mend that all outgoing outputs are used.
AX3800 Auto Amplifier Fault Changeover
