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3
Applications and Accessories
This amplifier has especially been designed for
use in 100 V PA systems . 100 V outputs for up
to five PA zones are available whose volume can
be individually adjusted . Microphones or units
with line level can be connected via three inputs
whose priority can be individually adjusted . Two
further line inputs of lowest priority complement
the connection possibilities .
Accessories
Insertion modules for
the extension compartment (1)
PA-1120DMT
digital message storage with timer
PA-1140RCD
radio / CD player
PA-1200RDSU AM / FM radio with audio player
PA desk microphones
especially designed for this amplifier
PA-4000PTT
A desk microphone may be con-
nected to the jack PA-4000PTT (43) .
(fig . 3)
A desk microphone may be con-
nected to the jack PA-4300PTT (44) .
PA-4300PTT
A maximum of three microphones
(fig . 4)
PA-4300PTT may be operated with
the amplifier .
Three zone paging microphones may
PA-1120RC
be connected; the microphone is
supplied with a connection module
(fig . 5)
which is inserted into the amplifier .
4
Setting up the Amplifier
The amplifier has been designed for installation
into a rack (482 mm /19"), however, it can also
be used as a table top unit . In any case, air must
be allowed to pass through all air vents to ensure
sufficient cooling of the power amplifier .
4.1 Rack installation
For rack installation, the amplifier requires 3 RS
(3 rack spaces = 133 mm) . To prevent the rack
from becoming top-heavy, insert the amplifier
into the lower section of the rack . The front plate
is not sufficient for fixing the amplifier safely;
additionally use lateral rails or a bottom plate to
secure the amplifier .
The hot air given at the sides of the amplifier
must be dissipated from the rack; otherwise heat
will accumulate in the rack which may not only
damage the amplifier but also other units in the
rack . In case of insufficient heat dissipation, insert
a ventilation unit into the rack above the amplifier
(p . ex . DPVEN-04) .
5
Adjusting the Chime Sound
and the Priority of the
Insertion Module
Prior to installing an insertion into the com-
partment (1), adjust the two jumpers MS 1
(chime) and MS 2 (priority of the insertion), see
layout diagram page 48 . These are no longer
accessible when an insertion is installed .
1) Disconnect the amplifier from the mains and
from the emergency power supply .
2) Screw off the cover (1) for the insertion .
3) Adjust the chime sound with the jumper
MS 1:
position "4 Tone": 4-tone chime
position "2 Tone": 2-tone chime
4) Adjust the priority for the insertion module
with the jumper MS 2:
12
position "SLAVE" (factory setting):
The signal of the insertion takes the lowest
priority .
position "PRI":
The signal of the insertion takes 2
This adjustment must e . g . be selected for call-
ing up stored announcements from the digital
message storage PA-1120DMT via the zone
paging microphone PA-1120RC .
A survey of all possible priorities is given in
chapter 7 "Defining the Priority of the Input
Signals" .
5) If no insertion is installed, tightly fasten the
cover (1) using screws .
6
Connections
All connections should only be made by skilled
personnel . Always switch off the amplifier before
making any connection!
6.1 Speakers
Either connect 100 V speakers for the five PA
zones to the screw terminals SPEAKER ZONES
ATT . OUTPUTS (26)
Attention! Each of the five zone outputs may
be loaded by the speakers with 100 W RMS
as a maximum . However, the total load of all
zones must never exceed the following value:
PA-1120 120WRMS
PA-1240 240WRMS
or connect a speaker group with a total imped-
ance of 4 Ω as a minimum to the screw terminals
LOW IMP 4 Ω (28) . The zone volume switches (5)
do not affect this output . Never use the 100 V
outputs (26) and the 4 Ω output (28) at the same
time; otherwise, the amplifier will be overloaded!
When connecting the speakers, always ob-
serve the correct polarity, i . e . connect the positive
contact of the speakers to the upper terminal .
The positive contact of the speaker cables is
always especially marked .
6.2 Microphones
Connect three microphones with an XLR or
6 .3 mm plug to the combined XLR / 6 .3 mm jacks
(39) of the inputs CH 1 to 3 .
1) When connecting a microphone, turn the
corresponding GAIN control (41) fully to the
right to position "−50" .
2) When using a phantom-powered microphone,
switch on the 17 V supply with the corre-
sponding button PHANTOM POWER (40) .
Caution! Only actuate the switch with the
amplifier switched off (switching noise) . With
the button pressed, no microphone with un-
balanced output must be connected to the
corresponding input; the microphone may be
damaged .
3) If a microphone is to take priority over another
microphone, set the corresponding DIP switch
MIC PRIORITY (45) to position ON (also see
chapter 7) .
Notes:
1 . When the desk microphone PA-4000PTT (fig . 3) or
PA-4300PTT (fig . 4) is used, the input CH 1 must not
be used as this input is connected in parallel with the
input (43) for the PA-4000PTT and with the input (44)
for the PA-4300PTT .
2 . If a zone paging microphone PA-1120RC is connected,
the input CH 2 must not be used as this input is con-
nected in parallel with the input for the PA-1120RC
(via the corresponding connection module) .
6.3 Desk microphone PA-4000PTT or
PA-4300PTT
The desk microphones PA-4000PTT (fig . 3) and
PA-4300PTT (fig . 4) [separately available as acces-
priority .
sory components] have been especially designed
nd
for this amplifier .
1) Use the RJ-45 jack PTT REMOTE (49) to con-
nect the microphone PA-4000PTT to the jack
PA-4000PTT (43) of the amplifier or use the
jack OUTPUT (55) to connect the microphone
PA-4300PTT to the jack PA-4300PTT (44) of
the amplifier .
2) It is possible to connect two additional micro-
phones of the model PA-4300PTT: Connect
the jack LINK (56) of the first microphone to
the jack OUTPUT (55) of the second micro-
phone . Proceed in the same way to connect
the third microphone to the second one .
3) Press the switch PHANTOM POWER (40) of
input CH 1 and turn the corresponding GAIN
control (41) fully to the right to the position
"−50" .
Notes:
1 . Channel CH 1 is now connected in parallel to the jacks
for the desk microphones and may therefore not be
used for any other input signals anymore .
2 . The total length of the microphone cable may not
exceed 1000 m .
6.4 Zone paging microphone
PA-1120RC
The zone paging microphone PA-1120RC (fig . 5)
available as a separate accessory has especially
been designed for this amplifier . Up to 3 zone
paging microphones may be connected . For
operation, the connection module supplied
with the microphone must be installed into the
amplifier first . Installation must be made by skilled
personnel only!
Note: When using the zone paging microphone, the
input CH 2 must not be used for other input signals as
this input is connected in parallel with the input for the
zone paging microphone .
6.4.1 Installation of the connection module
1) Disconnect the mains plug from the mains
socket . If an emergency power supply is
connected, disconnect it from the terminals
24 V⎓ (30) so that the amplifier is out of oper-
ation in any case . Unscrew the housing cover
of the amplifier and the cover plate (46) on
the rear side of the amplifier .
2) Connect the 3-pole line AS 903 C of the con-
nection module to the jack CN 903 C of the
amplifier – see layout diagram page 48 .
3) Insert the module into the cutouts which are
uncovered when removing the cover (46) and
then fasten it tightly using screws .
4) Connect the loose, two-pole line A in the
amplifier with a black core and a red core from
the connection AS 801 to the jack CN 801 A
of the module .
5) Connect the screened line AS 802 B of the
module to the jack AN 802 B of the amplifier .
6) Connect the 6-pole line AS 204 D of the mod-
ule to the jack CN 901 D of the amplifier .
7) If no digital message insertion PA-1120DMT is
installed, fasten the loose 10-pole line AS 4-1
of the module with cable ties in the amplifier .
Only make the steps 8) to 10) with the digital
message insertion PA-1120DMT installed:
8) Connect the 10-pole line AS 4-1 of the mod-
ule to the jack CN 4-1 of the insertion .
9) Use the jumper MS 802 of the connection
module to define if the announcement in
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