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English
7.3 Stereo audio sources
Connect units with a stereo output (e . g . CD
player) to the RCA jacks LINE IN (28) of the
input 4 or 5 . The amplifier is monophonic;
therefore, the left and the right stereo chan-
nels are mixed to a mono signal .
The signals of the inputs 4 and 5 have the
lowest priority and will be automatically
muted by a signal of higher priority (
☞
table
in figure 5, chapter 3) .
7.4 Desk microphone PA-4300PTT
With this microphone (separate accessory,
☞
figure 3), announcements can be made in
the PA zones selected at the amplifier . How-
ever, it is also possible to make high-priority
announcements in all zones, regardless of the
zone selection made at the amplifier .
1) Connect the jack OUTPUT (40) of the desk
microphone to the RJ-45 jack PA-4300PTT
(35) of the amplifier .
2) Another PA-4300PTT can be connected
to each PA-4300PTT: Connect the jack
LINK (41) to the jack OUTPUT (40) of
another PA-4300PTT etc . until a maximum
of 3 desk microphones and the amplifier
are connected with each other . The total
length of the connection cable must not
exceed 1000 m .
3) The desk microphone uses the channel 1;
therefore, no microphone and no other
audio source may be connected to the
XLR/6 .3 mm jack 1 at the same time .
4) Use a small screwdriver to turn the control
GAIN (30) at the input 1 to the right stop
(−50) .
5) The PA-4300PTT requires phantom power;
therefore, engage the button PHANTOM
POWER (31) at the input 1 .
Caution:
To prevent loud switching noise, use the
switch only when the amplifier has been switched
off, the outputs have been muted or the control
MASTER (11) has been set to “0” .
6) Use switch 1 of the dip switches MIC
PRIORITY (36) to define if the priority
level for the desk microphones is to be
increased (lower position ON) or not (upper
position) . Please note that this setting will
only apply to the PA-4300PA where the
switch PRIORITY has been switched off
(
☞
chapter 8 .6 .1) .
7.5 Zone paging microphone
PA-2400RC
With this microphone (separate accessory,
☞
figure 4), announcements of higher priority
can be made (
☞
table in fig . 5, chapter 3) .
On each PA-2400RC, it is possible to select
the PA zone where the announcement shall
be audible . In addition, it is possible to call up
stored messages from the insertion module
PA-1120DMT .
The signals of the zone paging micro-
phones will be combined with the signal of
the input 2; therefore, the volume control (2)
and the sound control (3) of the channel 2
will apply to both signals .
1) Use the switch 6 of the right DIP switch
block (48) located on the rear side of the
zone paging microphone to define the
amplifier with which the zone paging
microphone is to be used:
Position ON:
PA-2410Z (10 zones)
Upper position: PA-2420Z (20 zones)
2) Connect the jack OUTPUT (46) of the zone
paging microphone to the RJ-45 jack PA-
2400RC (34) of the amplifier . Another zone
paging microphone can be connected to
each zone paging microphone: Connect
the jack LINK (45) to the jack OUTPUT (46)
of another PA-2400RC etc . until a max-
imum of 32 zone paging microphones
and the amplifier are connected with each
other . The total length of the connection
cable must not exceed 1000 m .
3) To prevent interference during signal
transmission, make sure that the connec-
tion cable is properly terminated: On the
final unit in the chain, set the switch 6
(TERMINATION) of the DIP switch block
(47) to the lower position (ON) . On the
other units, the switch must remain in the
upper position .
4) The amplifier provides the zone paging mi-
crophones with supply voltage . The supply
voltage will be insufficient if more than
3 zone paging microphones are connected
to an amplifier or if a cable connection of
too much length is used .
The LED AMP POWER (55) will indicate
power supply via the amplifier . When the
LED starts to flicker, the supply voltage is
too low . In this case, connect a regulated
power supply unit with a low voltage plug
5 .5 / 2 .1 mm (outer / inner diameter) to the
jack DC IN 24 V (44) . Observe the polarity:
centre contact =
⊕
.
The supply voltage provided by the
power supply unit will also be made avail-
able to the zone paging microphones that
are connected to the jacks OUTPUT (46)
and LINK (45) . Thus, these zone paging
microphones do not require a power sup-
ply unit of their own if the power supply
unit connected to the jack DC IN 24 V
provides sufficient current (current con-
sumption of each PA-2400RC: 130 mA) .
5) At the amplifier, set switch 2 of the DIP
switches MIC PRIORITY (36) to the lower
position ON to select a higher priority level .
7.5.1 Setting unit addresses
For communication between the amplifier
and the zone paging microphones to work,
the PA-2400RC connected must have dif-
ferent data bus addresses . To assign the ad-
dresses (as binary code), use the switches 1– 5
“ID SELECTOR” of the DIP switch block (47)
located on the rear side of the zone paging
microphones .
Note:
Always switch off the amplifier prior to address
assignment; any address changes made during op-
eration will not be recognised .
7.6 Recorder, monitor system
A recorder, a monitor system or an addition-
al amplifier system can be connected to the
jacks REC (27) . Here, the mixed signal of all
inputs is available, regardless of the setting of
the control MASTER (11) . L (left) and R (right)
RCA jacks are provided for stereo recorders .
The amplifier is monophonic; therefore, the
signals at the two jacks are identical .
PA-2410Z:
Please note chapter 8 .7 .1!
7.7 External signal processing
For external sound or dynamic-range process-
ing, the jacks PRE OUT and AMP IN (26) can
be used to insert an equalizer or compressor,
for example, into the signal path .
1) Connect the input of the signal processing
unit to the jack PRE OUT .
2) Connect the output of the signal process-
ing unit to the jack AMP IN .
When the jack AMP IN is used, the internal
signal connection between the pre-amplifier
and the power amplifier will be interrupted
ahead of the volume control MASTER (11) .
PA-2410Z:
Please note chapter 8 .7 .1!
7.8 Switching inputs
For remote control of the amplifier by means
of switching contacts, the following screw
terminal pairs are available .
7.8.1 Remote-controlled switch-on
and switch-off
To switch the amplifier on and off by remote
control, connect a normally open contact to
the terminals AC POWER REMOTE (19) .
Note:
When the contact AC POWER REMOTE
is closed, it will not be possible to switch off the
amplifier with the POWER switch (13) .
7.8.2 Alarm input
Via a normally open contact at the terminals
E / M MESSAGE CONTROL (25), the amplifier
for an emergency announcement is activated
(if not already in operation) and all zone out-
puts are selected; for the model PA-2410Z,
the volume of the emergency announcement
is independent of the zone volumes adjust-
ed . When a message storage module (e . g .
PA-1120DMT) is installed, a stored emergency
announcement (storage location M6) can be
automatically reproduced .
This input can be connected to the
switching output of an alarm system, for
example .
