Safety Notes; Setting Up The Amplifier; Connecting The Amplifier - Monacor PA-4040 Bedienungsanleitung

2 Safety Notes

The unit corresponds to all relevant directives
of the EU and is therefore marked with
WARNING The unit uses dangerous
mains voltage . Leave servicing
to skilled personnel only and
do not insert anything into the
air vents . Inexpert handling may result in
electric shock .
During operation, there is a hazard of con­
tact at the connections OUTPUT 70 V and
100 V (21) with a volt age of up to 100 V .
Always switch off the PA system before
making or changing any connections .
•
The unit is suitable for indoor use only . Pro­
tect it against dripping water and splash
water, high air humidity and heat (admis­
sible ambient temperature range 0 – 40 °C) .
•
Do not place any vessels filled with liquid,
e . g . drinking glasses, on the unit .
•
The heat produced inside the unit must be
carried off by air circulation; never cover
the air vents (22) of the housing .
•
Do not operate the unit or immediately
disconnect the mains plug from the socket
1 . if the unit or the mains cable is visibly
damaged,
2 . if a defect might have occurred after the
unit was dropped or suffered a similar
accident,
3 . if malfunctions occur .
In any case, the units must be repaired by
skilled personnel .
•
Never pull the mains cable to disconnect
the mains plug from the mains socket, al­
ways seize the plug .
•
For cleaning only use a dry, soft cloth, never
use chemicals or water .
•
No guarantee claims for the unit and no li­
ability for any resulting personal damage or
material da m age will be accepted if the unit
is used for other purposes than originally
intended, if it is not correctly connected,
operated or not repaired in an expert way .
If the unit is to be put out of oper­
ation de finitively, take it to a local
recycling plant for a disposal which
is not harmful to the environment .
3 Applications
The amplifier has especially been de signed for
setting up a PA system for general PA appli­
cations . The different speaker outputs allow
to connect various speaker combinations (see
fig . 3) . The speakers can be distributed to
four PA zones, and the volume of each zone
can be adjusted independently of the others .
It is possible to connect microphones
(CH 1 – 3) or units with line level output
(CH 1 – 5) to the five inputs which can be
mixed with each other . All inputs can be as­
signed to the four PA zones independently
.
of each other . An additional line level input
is provid ed for emergency announcements
or other important announcements . With a
separate switch it is possible to switch to this
input .
For monitoring the zone signals, outputs
for headphones and an 8 Ω monitor speaker
are provid ed . The zone signals may individu­
ally be fed via the outputs LINE OUT (20) or
mixed via the output MIX OUT (15) to further
amplifiers or to a recorder .

4 Setting up the Amplifier

The amplifier is provided for installation into a
rack for units with a width of 482 mm (19"),
but it can also be used as a table top unit .
In any case, make sure that air will circulate
freely through all vents to provide sufficient
cooling of the unit .
4.1 Rack installation
Prior to installing the amplifier into a rack,
give priority to the inputs CH 1 and TEL
PAGING, if required . Open the amplifier for
this purpose (chapter 6 .1) .
For rack mounting 3 RS (3 rack spaces =
133 mm) are required . To prevent the rack
from becoming top­heavy, the amplifier must
be inserted in the lower section of the rack .
The front panel alone is not sufficient for
fixing it safely . In addition, lateral rails or a
bottom plate must secure the unit .
The air heated by the amplifier must be
able to leave the rack; otherwise, this will
result in heat accumulation within the rack
which may not only damage the amplifier
but also other units in the rack . In case of in­
sufficient heat dissipation, install a ventilation
unit into the rack .

5 Connecting the Amplifier

All connections should only be made by spe­
cialized personnel and always with the am­
plifier switched off!
5.1 Speakers
Fig . 3 on page 3 shows examples of different
possibilities of connection of the speakers for
each PA zone .
Caution! For each zone, connect low im­
pedance speakers only (4 Ω, 8 Ω) or PA
speakers only (25 V, 70 V, 100 V); otherwise,
the amplifier will be damaged .
However, it is possible to connect low im pe­
dance speakers and PA speakers in different
zones .
When connecting PA speakers, make sure
that the RMS power at each of the four zone
outputs will not exceed 40 W (PA­4040) or
120 W (PA­12040) . When interconnecting
low impedance speakers, make sure that the
impedance will not fall below the value stated
at the terminal (4 Ω or 8 Ω) .
Connect the speakers to the terminal
strips OUTPUT (21): the negative connections
to the terminal "COM" and the positive con­
nections to the corresponding terminal "4 Ω",
"8 Ω", "25 V", "70 V", or "100 V" .
5.2 Monitor speaker and headphones
To be able to monitor the signals of the PA
zones, it is possible to connect an 8 Ω speaker
to the terminals MONITOR (16) and head­
phones to the jack PHONES (10) .
5.3 Microphones
Up to three microphones with XLR plug or
6 .3 mm plug may be connected to the in­
puts CH 1 to CH 3 (29) . Set the input level
switches (19) to the corresponding position .
Only actuate the switches when the amplifier
is switched off or when the corresponding
control LEVEL (6) is set to zero (switching
noise) .
MIC for microphones which do not require
phantom power
PHANTOM for phantom­powered micro­
phones
Caution! Do not connect any microphones
with unbalanced output when the phan­
tom power has been activated . These mi­
crophones may be damaged .
5.4 Units with line output
Up to five units with a line output (e . g . CD
player, cassette recorder, radio) may be con­
nected to the inputs CH 1 to CH 5 (27 and
29) . For background music, it is best to use
the inputs CH 4 and CH 5 . These inputs may
be muted with a separate switch when e . g .
an announcement is made via the input CH 1
(see chapter 5 .6) . The stereo signals fed to
the jacks "L" and "R" of the inputs CH 4 and
CH 5 are internally mixed to a mono signal .
When connecting to the inputs CH 1 to
CH 3, set the corresponding input level switch
(19) to the position LINE . Only actuate the
switch with the amplifier switched off (switch­
ing noise) . For connecting a stereo unit to
the inputs CH 1 to CH 3, use one input each
for the right stereo channel and the left ste­
reo channel or use a stereo mono adapter
(e . g . SMC­1 from MONACOR); otherwise,
the signals of the stereo centre will cancel
each other out .
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