11038895_V_1_0.DOC
27/29
Suitable TV-pin: EUROLITE TV-35 TV-pin for speakers, No. 60000735
Installation of the speaker-system
Caution:
The loads have to be installed in a balanced way.
Caution:
The carrying capacity of the stand or speaker stand must never be exceeded!
Install the speaker-system via the flange on the speaker stand or via the TV-pin on the stand.
Make sure that the maximum lifting height of the tube is never exceeded.
Lifted telescopic tubes always have to be secured with a secondary securing!
5.3 Avoiding feedbacks
One of the most frequent problems when operating speaker-systems are feedbacks. They can be
recognized by howling and growling loudspeakers. Feedbacks are created then a signal is recorded by a
microphone, amplified, played back by a loudspeaker and then again recorded by the microphone.
The prerequisite for feedback is that the played back signal is louder than the original signal. A feedback
never cover the whole frequency range but only one overboosted frequency.
Make sure that you install especially the monitor-speakers so far away from the microphone that another
recording of the microphone signal is impossible.
Never hold the microphone directly in front of the speaker-system!
Extreme levels like feedbacks, bass-hum or the beats of a dropping microphone can destroy the
loudspeakers within very short time and produce immediate hearing damage. Such extreme levels must be
avoided at any rate.
6. 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.
6.1 System-test
Connect your PA-system with the mains.
With the Power-switch, you can switch the PA-system on and off. When switching the device on, the Power-
LED is illuminated.
6.2 Adjusting the signal levels
As soon as the Audio-signals are present the signal levels are reproduced by the speakers. You can adjust
the level of the input signals via the respective controls
6.3 Reverb-effect
When choosing the Reverb-effect, an echo is added to the original sound. The effect depth can be adjusted
via the Reverb-control.
