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5. INSTALLATION
The PA system can be placed as desired or put onto a PA speaker stand via the stand flange on its lower
side.
For larger indoor PA applications where the sound has to be radiated as even as possible, we recommend
the use of two or more
W.A.M.S-04D
PA systems
.
Always install the PA system at a solid, plane, anti-slip, vibration-free, oscillation-free and fire-resistant
location. Before installing the system, make sure that the installation area can hold a minimum point load of 5
times the system's load (e.g. weight 20 kg - point load 100 kg).
5.1 Installing and adjusting the PA system
When installing a speaker system on e.g. a stage, microphones and turntables should always be located
behind the speaker systems. This way, you can avoid dangerous and unpleasant feedback. If you cannot
install the speaker systems this way, the microphones and turntables should be located as far away as
possible from speaker systems. The speaker systems of a PA system are normally located left and right to
the stage. Do not install the speaker systems on the stage, but rather on appropriate tables or platforms in
front of the stage.
In order to produce a clear sound, the speaker systems should be installed in a way that they throw the
sound over the audience's heads. A bass speaker should be installed at listeners' eye level.
5.2 Avoiding feedback
One of the most frequent problems when operating speaker systems is feedback. It can be recognized by
howling and growling loudspeakers. Feedback is created when 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. Feedback
never covers 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 wireless microphone directly in front of the speaker system!
Extreme levels like feedback, bass hum or the beats of a dropping microphone can destroy the loudspeakers
within a very short time and produce immediate hearing damage. Such extreme levels must be avoided at
any rate.
5.3 Installation on a stand or speaker stand
Stands or satellite systems must only be installed on a plane area with a maximum
inclination angle of 5°.
Caution: Speaker systems installed on stands or satellite systems may cause severe
injuries when crashing!
When using stands or satellite systems under the influence of horizontal forces, e.g.
through wind, the standing safety can be impaired. This is why additional safety measures
like attaching ballast weights have to be taken.
If inclined tension cables or prolonged outriggers are used, the area of danger has to be
marked or even be blocked.
Before lifting or lowering the telescopic tubes, always block a safety area around the stand
or satellite system. This safety area must have a diameter of 1.5 times the maximum
height.
Lifted telescopic tubes always have to be secured with a secondary securing!
