Zone Outputs; Line Output; Microphones; Units With Line Level - Omnitronic MPZ SERIES Bedienungsanleitung

Information on choosing appropriate speaker cables when using low-impedance speakers
•
Speaker systems must only be connected via sufficiently dimensioned cables. Too thin cables lead to cable
heatup or enormous power loss and loss in sound quality.
•
For all speaker systems up to 400 Watts, we recommend a cable diameter of 2.5 mm², for all other speaker cables
4 mm².
•
A high damping factor of your amplifier supplies a clear sound reproduction. Unnecessarily long and thin cables
will influence the damping factor and thus the low frequencies in a negative way. In order to safeguard good sound
quality, the damping factor should lie around 50. The longer a cable has to be, the thicker it should be. In this
respect, a damping factor of 200 will be reduced to 47 (8 ohms) when using a 10 m long, 2.5 mm² speaker cable.
The power loss at 8 ohms is 1.63 % and at 4 ohms 3.25 %.
General information on installing cables
• Always treat cables carefully and protect them from damages during transportation.
• Install cables always in a structured way and protect them from damage.
• Cables must be installed in a way that no person can stumble over them. Always fix cables with an appropriate
tape.
• Cables should be installed directly (no loops, S-shaped overlengths).
• Always install cables far away from power cables (never closely parallel).
• Never put heavy objects like speaker systems, flightcases etc. on cables.
• Never operate cables wound up.

7.1.2 Zone outputs

For the six PA zones, PA speakers with 100 V audio transformer can be connected to the zone outputs. The
total load of all zones must not exceed 180 W
350.6) or 500 W
(MPZ-500.6), otherwise the amplifier may be damaged by overload.
RMS

7.2 Line output

For connection to units with line level (e.g. mixer, amplifier) the stereo RCA output LINE OUTPUT can be
used.

7.3 Microphones

Three unbalanced inputs are available for connecting microphones: two via 6.3 mm plug at the rear inputs
MIC 2 INPUT and MIC 3 INPUT, and one via XLR or 6.3 mm plug at the front combo input PRIORITY MIC 1.
The XLR jack is equipped with a lock which is released by pressing the PUSH lever down and pulling the
microphone plug out at the same time. Input PRIORITY MIC 1 features an adjustable priority function.

7.4 Units with line level

Three audio units with line level can be connected to the stereo RCA inputs LINE 1 to 3.

7.5 Connection with the mains

Finally connect the device to a mains outlet (230 V AC, 50 Hz ~) with the mains cable. The occupation of the
connection cables is as follows:
Cable Pin
Brown Live
Blue Neutral
Yellow/Green Earth
The earth has to be connected! If the device will be directly connected with the local power supply network, a
disconnection switch with a minimum opening of 3 mm at every pole has to be included in the permanent electrical
installation. The device must only be connected with an electric installation carried out in compliance with the IEC
standards. The electric installation must be equipped with a Residual Current Device (RCD) with a maximum fault current
of 30 mA.
RMS
International
L
N
(MPZ-180.6), 250 W
RMS
25/28
(MPZ-250.6), 350 W
RMS
00056943.DOC, Version 1.0
(MPZ-