7
AUDIO IN / OUTPUT PORTS
Audio output from pre-amplifier mixer is connected to this port at "Input" terminals before link it to the
amplifier audio input via "Output" terminals. Signal ground shall be joint together as they are
common. If all amplifiers share a common source, terminate only at channel 1 and utilise the signal
link switch to join all the input terminals. Please refer to the chapter " Connecting Input Source ".
8
SIGNAL LINK SWITCH
Switching the switch on shall link the input source from one channel to the other. Use this only when
two or more amplifiers share common input source. For matrix system, some zones may have
different sources, thereby please disable the switch to break the joint to the adjacent channel.
9
STANDBY AMPLIFIER INPUT SOURCE
Connect the input source of standby amplifier to this port. Whenever a faulty channel is detected and
a changeover takes place, the input source of the standby unit shall be directed to the source of the
affected channel.
10
FAULT CONTACT PORT
If a changeover takes place or a fault is detected, this shall provide a dry contact and be connected to
external devices for monitoring purpose.
11
POWER INPUT SOURCE
This equipment operates under 24V DC. Please use recommended power supply - Amperes PS9400
or regulated power adaptor. Please observe polarity when connecting.
12
AMPLIFIER OUTPUT TERMINALS
Connect outputs from amplifiers to the "Input" and the "Output" terminal shall then be connected to
speaker zone selectors.
continued ...
13
STANDBY AMPLIFIER OUTPUT TERMINALS
This port is connected to the output from standby amplifier.
14
CHANNEL / AMPLIFIER DETECTION SWITCH
If any of the channel is not used, (less than 6 duty amplifiers), the corresponding channel switch
should be turned off to avoid false detection.
15
CASCADE LINK
Two or more of AX3700 can be used when only a standby amplifier is available to serve more than 6
duty units. Use this link in criss cross connection. Please refer to the section " Cascading more than
one unit ".
16
RS485 PORT *
This is for external monitoring purpose via RS485 protocol.
Note :
This feature is for future upgrade and shall be available soon.
PAGE 3
AMPERES AX3700
