A SYSTEMS DM434, User Manual

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6
DM434
English
REAR PANEL DESCRIPTION
12. Power Cable Receptacle
This is a standard IEC power cable receptacle� Plus the
power cable in here and connect the other end of the cable
to an appropriate AC mains power supply�
13. 24V DC Control
This terminal black input accepts an external 24V DC
regardless of the position of the positive and negative
poles� It will activate the emergency function, which will
route the external emergency message to all zone and
utility outputs� It provides an override control for emergency
use�
14. Emergency Audio Input
The 3-pin phoenix/euroblock input jack accepts input by
balanced or unbalanced connections� This input works in
conjunction with the 24V DC CONTROL� When the circuit
is activated by the 24V DC power supply all other audio
input sources will be terminated� The source connected to
this emergency audio input will be routed to all zones and
the utility output� The grounding and positive and negative
connections should be wired as indicated by the G, + and
– markings below the connector�
15. Utility Output
This is a standard line-level 3-pin phoenix/euroblock output
for balanced or unbalanced connections� The grounding
and positive and negative connections should be wired as
indicated by the G, + and – markings below the connector�
16. Zone Outputs
These are standard 3-pin phoenix/euroblock connectors�
The zone outputs include left (L) and right (R) channel
outputs (zone 4 only has mono output)� When operating in
mono mode, use the left channel’s connector only�
17. Remote Level Control
This socket allows for the connection of external volume
control devices to remotely control audio outputs� Each
remote socket controls up to two zones� When the REMOTE
connection is not made, the output level of each zone will
be according to the level selected on the face of the mixer�
Wire the Asystems RM-2 rotary control as follows�
18. Source Input
These are unbalanced line-level stereo RCA inputs� There
are three in total on the DM434� These are most commonly
used with music players such as CD players, MP3 players
and notebook computers� The accompanying gain control
allows the input signal to be adjusted between -10 and +20 dB.
19. Source Link
The source link is an RS-232 D-type 9-pin connector that
distributes the three source inputs to the next compatible
zone mixer in the series� It also functions to receive the source
input from other DM434 zone mixers� This function allows the
source input from one Asystems zone mixer to be used for
many other systems while simplifying wiring schemes�
20. Paging Control
The RJ-45 jack is used to connect a paging control to the
DM434� The DM434 does not including a paging microphone/
control as standard� They can be purchased separately�
21. Paging Microphone Input
This is a balanced XLR jack that is used to connect the output
of a paging microphone to the mixer� It includes a gain control
with a range of -15dB to +15dB. The paging microphone
connects to the mixer through an XLR input and the paging
control RJ-45 connector� The paging control allows users to
select the destination of the microphones signal� The following
is a diagram detailing how to make the connection�
22. Phantom Power Switch
This switch will ac15V DC of phantom power on the
paging microphone input� This makes the input suitable for use
with condenser microphones� Please check your microphone’s
user manual for information on whether it requires phantom
power before you apply it to the microphone input�
12 13 14 15 16 17 18 19 20
21
22
V1
CV1
V2
CV2
GND
GND
RM-2 REMOTE REMOTE LEVEL CONTROL SOCKET