Switch-Adjustments; Connection With The Mains; Operation Modes - Omnitronic P-Series Mode D'emploi

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Installing the speaker-cables
Connect the speaker-systems among each other using the inputs and outputs. Connect the cable of the first
speaker-system with the Speaker-socket Output CH-1 and Output CH-2 of the amplifier. The signal will be
transmitted to the individual speaker-systems.
Always treat the cables carefully and protect them from damages during transportation.
Install the cables always in a structured way and protect them from damage.
The cables must be installed in a way that no person can stumble over them. Always fix the cables with an
appropriate tape.
Both cables should be of the same kind.
Both cables should have the same length.
Both cables should be installed directly (no loops, S-shaped overlengths)
Always install the cables far away from power cables (never closely parallel)
Never put heavy objects like speaker-systems, flightcased etc. on cables.
Never wind up cables tightly around the elbow, but rather sleek with an interior diameter of 20 to 30 cm.

Switch-adjustments

Input Sensitivity-selector:
The selection 0.77 V is for Homerecording mixers. The output level of these mixers is –10 dBV via RCA-
sockets.
The selection 1.44 V is for professional mixers. The output level of these mixers is +4 dBu via XLR-sockets
or balanced jack sockets.
Ground Lift-switch:
This switch allows the signal ground or chassis ground to be separated in case of a ground conflict. For
highest safety of the equipment, it is recommended to keep the Ground Lift-switch in the GND FLOATING-
position. In case of a ground conflict please set the ground lift-switch to GND LIFT.

Connection with the mains

Connect the device to the mains with the enclosed power supply 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.

Operation modes

Stereo operation
Normal operation mode of an amplifier, in which every channel gets its own signal. The most commonly used
mode of amplifiers is stereo-operation at 4 Ohms. Make sure that the operation-mode-switch is correctly set.
Calculation number of speakers – impedance
E.g. 1 speaker à 8 Ohm = 8 Ohm
2 speakers à 8 Ohm = 4 Ohm (parallel)
2 speakers à 8 Ohm = 16 Ohm (in line)
3 speakers à 8 Ohm = 2.66 Ohm (parallel), only for amplifiers capable of handling 2 Ohms
2 speakers à 8 Ohm = 24 Ohm (in line)
4 speakers à 8 Ohm = 2 Ohm (parallel), only for amplifiers capable of handling 2 Ohms
International
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