10
English
5.5 Connection for emergency
announcements or
a telephone systeme
For emergency announcements or for con
nection to a telephone system, the amplifier
is provided with the input TEL PAGING (18) .
T
R
G
TEL. PAGING
Signal
➃
Input and switch
for emergency
announcements
Feed the signal (line level, 40 mV – 1 .5 V) via
a shielded audio cable to the terminal “R” .
Connect the ground and the shield to the ter
minal “G” . Connect a switch to the terminals
“T” and “G” . The switch is used to release
the announcement, i . e . the announcement
signal may always be available at the terminal
“R”, but it can only be heard when the switch
is closed . When the switch is closed, the sig
nals of the inputs CH 2 – 5 can be muted at
the same time, see chapter 6 .1 .
Set the DIP switches ZONE (26) for the
zones where the emergency announcements
are to be heard to the lower position ON .
The volume for these announcements is sepa
rately adjusted with the control VOLUME (28)
on the rear side .
5.6 Switch for muting the
inputs CH 2 to CH 5
The inputs CH 2 to CH 5 can be muted to
gether with a single switch, e . g . for making
an important announcement via the input
CH 1 . For this purpose, connect a switch to
the terminals PRIORITY (17) .
Note:
When an announcement is made via the input
CH 1, the inputs CH 2 to CH 5 will be automatically
muted if priority is given to the input CH 1, see chap
ter 6 .1 .
5.7 Line signal outputs for further
amplifiers or a recorder
For connecting further amplifiers or a re
corder, different line outputs are available:
LINE OUT (20)
The signals of the individual zones are present
at these four balanced outputs . The signal
level de pends on the position of the corre
sponding zone control LEVEL (14) . If the input
of the unit to be connected is unbalanced,
connect the input only to the terminals “+”
(signal) and “G” (ground) . Use these outputs:
1 . to connect further PA amplifiers if more
speakers than permitted are required for
each PA zone .
2 . to connect a recorder for recording the
signals of a zone .
MIX OUT (15)
Here the signals of the zones are present
whose buttons MON (13) are pressed . If
several zones are selected at the same time,
the corresponding zone controls LEVEL (14)
define the mixing ratio of the zone signals .
Use this output:
1 . to connect an amplifier if e . g . further mon
itoring speakers are required .
2 . to connect a recorder for recording the
signals of different zones .
5.8 Power supply
Finally connect the supplied mains cable to
the mains jack (25) first and then to a socket
(230 V/ 50 Hz) .
6 Setting into Operation
6.1 Giving priority to the inputs CH 1
and TEL PAGING
In the factory, the inputs CH 1 and TEL
PAGING (18) are adjusted in such a way that
their signals will be mixed with the other input
channels . When the jumper S701 inside the
amplifier is rearranged, the inputs CH 1 and
TEL PAGING will take priority over the inputs
CH 2 – 5 . When an announcement is made via
the input CH 1 or TEL PAGING, the signals of
CH 2 – 5 will be automatically muted during
the announcement .
WARNING
For rearranging the jumper
S 701, the unit must be
opened . Only skilled personnel
may do this; inexpert handling
may result in electric shock .
1) Disconnect the mains plug from the socket .
2) Unscrew the housing cover .
3) Rearrange the jumper S701 from OFF
to ON (page 11, figure 5) .
4) Fasten the housing cover again .
6.2 Adjusting the volume and the sound,
switching the input signals
to the zones
1) To prevent switching noise, switch on all
other units of the PA system first .
2) Prior to switching on the amplifier for
the first time, set the four zone controls
LEVEL (14) to zero to prevent an excessive
volume at the be ginning . Then switch on
the amplifier with the POWER switch (5) .
The POWER LED (4) lights up .
3) For basic setting of the input channels
a) set all controls GAIN (2), TREBLE and
BASS (1) to midposition,
b) set all controls LEVEL (6, 14) to zero,
c) unlock all buttons MUTE (8) so that
the red LEDs above the buttons do not
light up,
d) unlock all buttons ZONE SELECTOR Z 1
to Z 4 (7) .
4) Turn up the control LEVEL (6) of the input
which is to be heard at highest volume
(e . g . for an nounce ments) to approx .
2
∕
3
of the maximum value . With the buttons
ZONE SELECTOR (7), switch the input sig
nal to the zones where it should be heard .
5) Adjust the desired volume for each zone
with the zone controls LEVEL (14) . The
level indicators (12) show the volume of
the zones . The top red LED lights up when
the integrated limiter limits the volume
at the maximum level . It should light up
with passages of highest volume for a
short time only . If it lights up for a longer
time, turn back the corresponding zone
control LEVEL .
If the volume of the zones cannot be
adjusted in an optimum way because the
input signal is too low or too high, read
just the input level with the corresponding
control GAIN (2) or LEVEL (6) .
6) Adjust the sound with the corresponding
controls TREBLE and BASS (1) . If required,
readjust the volume with the control
LEVEL (6) .
7) For feeding further input signals to certain
zones, press the corresponding buttons
ZONE SELECTOR (7) . With these buttons
the zones may be configured differently .
Example:
– The announcements of input CH 1 are
to be heard in all zones .
Press the buttons Z 1 to Z 4 of CH 1 .
– The announcements of input CH 2 are
to be heard in zones 1 and 4 only .
Press the buttons Z 1 and Z 4 of CH 2 .
– The background music of CH 4 is to be
heard in zones 1 and 2 .
Press the buttons Z 1 and Z 2 of CH 4 .
– The background music of CH 5 is to be
heard in zones 3 and 4 .
Press the buttons Z 3 and Z 4 of CH 5 .
8) Adjust the volume and the sound of further
input signals with the controls LEVEL (6),
TREBLE and BASS (1) . Turn the controls
LEVEL of the inputs not used to zero .
6.3 Muting inputs
For muting an input, e . g . for switching off the
background music in case of an announce
ment, press down the corresponding button
MUTE (8) . As an indication, the red LED above
the button lights up . To switch on the input
again, unlock the button MUTE .
If a switch is connected to the terminals
PRIORITY (17), the inputs CH 2 to CH 5 can be
muted at the same time by closing the switch .
6.4 Monitoring the zone signals
Press down the buttons MON (13) of the PA
zones whose signals are to be monitored . Ad
just the volume for the monitor speaker con
nected to the terminals MONITOR (16) with
the control MONITOR (11) and the volume for
the headphones with the control PHONES (9) .
The signal for the monitor speaker is shown
by the level indicator (3) .
Notes:
1 . The volume for the headphones and the moni
toring speaker also depends on the zone controls
LEVEL (14) . When a control is set to zero, the signal
of the corresponding zone cannot be monitored
even if the button MON is pressed .
2 . The buttons MON are also used to switch the
zone signals to the output MIX OUT (15) – see
chapter 5 .7 .
