Omnitronic MCS-1250, User Manual

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N.B.:
The input-impedance of the speaker-systems should at least be the same or even higher than the output-
impedance of the amplifier.
Connection with the mains
Connect the device to the mains with the power-plug.
The occupation of the connection-cables is as follows:
Cable Pin International
Brown Live L
Blue Neutral N
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.
OPERATION
When operating the amplifying system, please make sure that the loudspeakers always sound well. When
distortions can be heard, either the amplifier or the loudspeaker is overloaded. Overloads can quickly lead to
amplifier or speaker damage. In order to avoid damage, please reduce the volume immediately when
distortions can be heard. When speaker-systems are destroyed by overload, the guarantee becomes void.
Always check the sound pressure level with a meter in order to keep to the threshold.
If you want to switch off the system,
switch off the amplifier first and then the pre-amplifiers in order to
avoid acoustic shocks on the speakers.
PROBLEM CHART
PROBLEM: CAUSE: REMEDY:
No power. • The power-cord is not connected. • Check the power-cord and any
extension-cables.
No sound. • The power-cord of the respective
device is not connected properly or
not connected at all.
• The connection-socket or the plug is
dirty. • Check the power-cord and if the
plugs are tightly connected with the
sockets.
• Clean the socket and/or the plug.
Noise. • The input-signal is too strong. • Reduce the input-signal via the Gain-
control.
Fan does not work, LEDs
do not light up
• The power-cord is not connected.
Please check if the power is available