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7. OPERATION
1. Prior to switching on, turn the
[
MASTER
] control to minimum to avoid a possible switching-on noise.
Then switch on the speaker system with the [
POWER
] switch.
2. Turn up the
[
MASTER
] control so that the mixing ration of the input channels can be adjusted in an
optimum way.
3. Adjust the desired volume ratio with the [
LEVEL
] controls of the microphone channel and the line input.
4. Adjust the desired sound with the tone controls. By adjusting the tone controls, the high frequencies
(control [
TREBLE
]) and the low frequencies (control [
BASS
]) can be boosted or attenuated. With the
controls in mid-position, the frequency response is not affected.
5. Adjust the definite level of the overall volume with the
[
MASTER
] control. In case of overload, the [
CLIP
]
indicator lights up. In this case, reduce the volume correspondingly.
6. When operating the speaker system, please make sure that the loudspeakers always sound well. When
distortions can be heard, either the amplifier or the loudspeakers are 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.
7. After operation, set the
[
MASTER
] control to minimum, then switch off the speaker system with the
power switch.
8. CLEANING AND MAINTENANCE
Disconnect from mains before starting maintenance operation!
DANGER TO LIFE!
The operator has to make sure that safety-relating and machine-technical installations are inspected by an
expert after every four years in the course of an acceptance test.
The operator has to make sure that safety-relating and machine-technical installations are inspected by a
skilled person once a year.
The following points have to be considered during the inspection:
1) All screws used for installing the speaker systems or parts of the speaker system have to be tightly
connected and must not be corroded.
2) There must not be any deformations on housings, fixations and installation spots (ceiling, suspension,
trussing).
3) The electric power supply cables must not show any damages, material fatigue (e.g. porous cables) or
sediments. Further instructions depending on the installation spot and usage have to be adhered by a
skilled installer and any safety problems have to be removed.
We recommend a frequent cleaning of the speaker system. Please use a soft lint-free and moistened cloth.
Never use alcohol or solvents!
There are no serviceable parts inside the device except for the fuse. Maintenance and service operations are
only to be carried out by authorized dealers.
