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7.9 Power supply and
emergency power supply
If the amplifier is to continue operation in
case of a power failure, connect a 24 V emer-
gency power supply unit (e . g . PA-24ESP from
MONACOR) to the terminals DC POWER (20) .
Finally, connect the mains cable (17) to a
mains socket (230 V/ 50 Hz) .
8 Operation
To prevent volumes that are too high, set the
control MASTER (11) to "0" prior to switching
on the amplifier for the first time .
8.1 Switching on/off
The amplifier will be in standby mode once it
is connected to the mains and no emergency
power supply is available . The LED STAND-BY
(12) will light up .
To switch on the amplifier, engage the POWER
switch (13) . The LED POWER will light up (in-
stead of the LED STAND-BY) . To switch off
(standby mode), disengage the switch POWER
again .
Via a switching contact at the terminals AC
POWER REMOTE (19), the unit can also be
switched on and off by remote control .
Note: When the contact AC POWER REMOTE
is closed, it will not be possible to switch off the
amplifier with the POWER switch .
When the amplifier is additionally connected
to an emergency power supply, the amplifier
will permanently remain switched on . In this
case, the POWER switch can only be used to
switch between mains power supply (switch
engaged) and emergency power supply
(switch disengaged) .
8.2 Selecting the PA zones
All zone outputs desired can separately be
switched on and off, e . g . for an announce-
ment or for background music . In addition,
the PA-2410Z allows for separate volume
control of the individual zones .
8.2.1 PA-2420Z
1) To switch on a zone, press the correspond-
ing button ZONES SELECTORS Z1– Z20
(14) . When a zone is switched on, the LED
above the respective button will light up .
2) To switch off a zone, keep the correspond-
ing button pressed until the LED above the
button extinguishes .
3) To switch on all zones of a row of but-
tons, press the respective button ALL
(to the right of the row) .
4) To reset a row to its previous zone selec-
tion, keep the button ALL pressed for
approx . 2 seconds .
8.2.2 PA-2410Z
Use the rotary switches Z1– Z10 (16) to select
the volume (levels 1– 5) for each zone output
or to switch off the zone (position OFF) . This
setting will have no influence on the volume
– of an emergency announcement triggered
via the switching input E/M MESSAGE
CONTROL (25),
– of an announcement via a desk microphone
PA-4300PTT with the setting PRIORITY =
ON,
– of an announcement via a zone paging
microphone PA-2400RC .
8.3 Setting the input channels
1) To make the following settings, first switch
on at least one zone output and set the
control MASTER (11) for the total volume
approx . to mid-position .
2) Use the appropriate control (2) to adjust
the volume of the input channels 1– 5 . Set
the control to "0" for the inputs that are
not used .
The input gain may be changed for
additional level adjustment: Using a small
screwdriver, turn the controls GAIN (30)
located on the rear side of the amplifier .
Use the controls BASS and TREBLE (3)
for optimal sound adjustment .
3) Use the controls PACK BASS and TREBLE
(4) to optimize the sound of an insertion
module .
4) Turn the control TEL PAGING LEVEL (7) to
adjust the volume of a signal source con-
nected to the terminals PAGING IN (24) .
If no signal source is connected, turn the
control to "0" .
5) Use the control MASTER (11) to adjust the
total volume as desired .
The LED chain OUTPUT LEVEL (15) will indi-
cate the level of the mixed signal that has
been adjusted with the control MASTER .
If the LED CLIP lights up, the signal is dis-
torted . In this case, turn back the control
MASTER or the volume control of the ap-
propriate input accordingly .
CAUTION Never adjust a very high vol-
ume . Permanent high vol-
umes may damage your hear-
ing!
Your ear will get accustomed to high vol-
umes which do not seem to be that high
after some time . Therefore, do not further in-
crease a high volume after getting used to it .
8.4 Triggering the chime
If a chime shall sound, e . g . to precede an
announcement to be made via one of the
channels 1– 5, briefly press the button
CHIME (5) . The volume of the chime can
be adjusted by means of the control CHIME
LEVEL (6) (selection of the chime melody
☞
chapter 4) . If required, use the control
MASTER (11) to readjust the total volume .
8.5 Siren
To switch a siren sound on or off, use one of
the two siren switches (9):
repeated wailing (tone rising and falling)
rising tone followed by continuous tone
Only one siren can sound at a time . The
volume of the siren can be adjusted by means
of the control SIREN LEVEL (8) . If required,
use the control MASTER (11) to readjust the
total volume .
8.6 Desk microphone PA-4300PTT
To make announcements via a PA-4300PTT:
1) Use the buttons ZONE SELECTORS (14)
or the rotary switches Z1– Z10 (16) at the
amplifier to select the PA zones where the
announcements shall be audible (
ter 8 .2) .
Note: When the switch PRIORITY (38) on the
microphone has been set to ON, the zone selec-
tion made at the amplifier will not apply to this
desk microphone .
2) Prior to the first announcement, turn the
volume control (2) of the input 1 at the
amplifier approx . to mid-position .
3) On the microphone, keep the button TALK
(43) pressed, wait for the chime to sound,
if applicable (
☞
chapter 8 .6 .1, setting
"CHIME") and then speak into the micro-
phone cartridge (42) . The LED indicator
TALK above the button will light up . When
a specific speech volume is exceeded, the
signals of the inputs with lower priority
will automatically be muted (
and 7 .4) .
Note: When the switch PRIORITY (38) on the
microphone has been set to ON, the other input
signals will be muted as soon as the talk button
is pressed .
4) If required, adjust the volume of the an-
nouncement by means of the control 1
(2) and then use the controls BASS and
TREBLE (3) for optimal sound adjustment .
If required, use the control MASTER (11)
to readjust the total volume .
5) The LED BUSY above the talk button will
indicate any announcements that are being
made via a different desk microphone .
8.6.1 Settings at the PA-4300PTT
Use the switches on the rear side of the desk
microphone to make the following adjust-
ments:
CHIME (37) – When the switch is in the po-
sition ON and the button TALK (43) is
pressed, the chime of the amplifier will
sound first (
☞
chapter 8 .4) .
PRIORITY (38) – When the switch is in the po-
sition ON and the button TALK is pressed,
all zone outputs will be switched on . When
the switch is in the upper position, howev-
er, the announcement will only be audible
in the zones that are currently switched on
at the amplifier .
MASTER / SLAVE (39) – When multiple desk
microphones PA-4300PTT connected to
the amplifier are being used, the micro-
phones with the setting MASTER will take
priority over the microphones that have
been set to SLAVE .
☞
chap-
☞
chapters 3
17
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