A SYSTEMS DM434 User Manual - page 6
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 activate +15V 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