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•
EN
4
Installation
Placing the Amplifier
Set up the amplifier on an even, solid surface. In order to ensure sufficient cooling, air must always be able
to flow freely through all air vents. Steady overheating will damage the amplifier.
Connecting Speakers
DANGER TO LIFE!
High voltage at terminals when using PA systems. Installation by skilled personnel only! Turn off
amplifier before connecting.
For connecting speakers direct outputs via the
70V/100V or 4Ω/8Ω/16Ω
terminals (these are not affected by
the zone buttons) and zone outputs via the
CH 1-4
terminals are available. The direct outputs and the zone
outputs are connected in parallel. The total load must not exceed 60 W
RMS
(CPZ-60P) or 120 W
RMS
(CPZ-
120P), otherwise the amplifier may be damaged by overload.
Zone Outputs
For the four PA zones, PA speakers with 70 V/100 V audio transformer can be connected to the
CH 1-4
terminals (positive pole). Use the
COM
terminal as common ground connection for all speakers. When
connecting, observe the correct polarity (positive and negative connections). The positive connection of the
speaker cables is always specially marked.
Direct Outputs
Either PA speakers with 70 V and 100 V audio transformers or 4-16
Ω
speakers or speaker groups can be
connected.
1
Connect PA speakers to the terminals
COM
(negative pole) and
70V
or
100V
(positive pole).
2
Connect low-impedance speakers to the terminals
COM
(negative pole) and
4, 8 or 16
Ω
(positive
pole). When interconnecting several low-impedance speakers, it is especially important to obtain the
minimum impedance at the respective terminal. The input impedance of the speaker systems should at
least be the same or even higher than the output impedance of the amplifier.
Example for the calculation number of speakers/impedance:
Number of speakers
≙
Impedance
1 speaker at 8
Ω
8
Ω
2 speakers at 8
Ω
each
4
Ω
(parallel)
2 speakers at 8
Ω
each
16
Ω
(in line)
3 speakers at 8
Ω
each
2.66
Ω
(parallel)
3 speakers at 8
Ω
each
24
Ω
(in line)
4 speakers at 8
Ω
each
2
Ω
(parallel)
Connecting Audio Units
•
MIC 1:
The rear panel provides a balanced XLR input for connecting a microphone. To enable a +48 V
phantom power for condenser microphones set DIP switch
3
to the upper position. Alternatively, use the
front unbalanced 6.3 mm jack for connecting a dynamic microphone. The level is adjusted by the MIC 1
control.
Caution!
If the phantom power is switched on, no microphone with unbalanced output must be connected. Otherwise
this microphone may be damaged. To prevent switching noise, only switch on phantom power when the
amplifier is switched off or when all output controls are set to minimum.
To enable the priority circuit set DIP switch
4
to the upper position. In case of an announcement via this
input, the level of the other channels is attenuated. After the announcement, the level of the other channels
slowly returns to the original level.
