Omnitronic MPVZ Series, Руководство пользователя

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EN
5
Connections
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 screw terminals DIRECT SPEAKER OUTPUT (these are not
affected by the zone controls) and zone outputs via the terminal block 100 V SPEAKER ZONES OUTPUT
are available.
The direct outputs and the terminal blocks are connected in parallel. The total load must not exceed
180 W
RMS
(MPVZ-180.6), 250 W
RMS
(MPVZ-250.6) or 350 W
RMS
(MPVZ-350.6), otherwise the amplifier may
be damaged by overload.
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 4-16
Ω
(positive pole).
3 When connecting, observe the correct polarity (positive and negative connections). The positive
connection of the speakers cables is always specially marked.
Zone Outputs
For the six PA zones, PA speakers with 100 V audio transformer can be connected to the zone outputs.
Notes
The input impedance of the speaker systems should at least be the same or even higher than the output impedance of
the amplifier. Refer to this 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)