Behringer Eurolive Series F1220 - Manual (Page 7)

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2. OPTIMUM PERFORMANCE
We designed the EUROLIVE SERIES for use in a variety of applications. Naturally, the sound of your speaker
box largely depends on the acoustic properties of the environment in which it is set up. The following points will
give you a few hints enabling you to fully exploit all features of your EUROLIVE speaker system.
2.1 Tweeter
High frequencies are the very part of the audio spectrum that ensures a clear sound and speech intelligibility.
Although these frequencies can be located most easily, they are also the first to be blocked acoustically. We
therefore recommend that you set up your speakers so that the tweeter radiates its signals slightly above the
heads of the audience. This will ensure both an optimum dispersion of the high-frequency content and a
considerably improved speech intelligibility.
2.2 How to avoid feedback
Always place the “front-of-house” speakers (viewed from the audience) in front of the microphones. Use
professional floor monitors (e.g. F1220 or F1520), so that the musicians on stage can hear themselves.
2.3 How to avoid feedback when using turntables (DJ Applications)
Turntables often produce feedback in the bass range: low frequencies are fed back to the pick-up arm and
cartridge to be reproduced again by the speakers. The usual reasons for this effect are speakers set up too
close to the turntable, rooms with a wooden floor or elements placed on the stage. In any such case it will be
best to move the speakers away from the turntable or to move them off the stage and place them on a solid
support. Another possibility is the use of stands, so that there is no direct contact between floor and speakers.
2.4 Speaker protection through low-cut filter
Please avoid situations in which rumble noise or low frequencies can lead to an excessive displacement of the
speaker diaphragm. Use an equalizer to cut the bass signal below the response curve of the speaker, or use
a low-cut or high-pass filter. Most equalizers and sound enhancers provide a low-cut function (e.g. our
BEHRINGER ULTRA-GRAPH PRO GEQ3102).
The use of a low-cut filter in the signal path is recommended, in particular, when you are using turntables and
CD players as your signal sources. CD players often produce extremely low frequencies which can lead to
excessive diaphragm displacement. The only way to avoid damage is to use a high-pass or low-cut filter.
2. OPTIMUM PERFORMANCE