Part - Studio Lights

KNOW-HOW ›PRO-SOUND‹ TECHNOLOGY
General introduction into professional sound systems
The following tips, explanations and illustrations intend to facilitate the planning
and thus the selection of PA sound systems for you.
Planning of sound systems:
Before the actual definition of an acoustic irradiation conception, basic information has
to be acquired. Insufficient data would lead to making a customer-oriented planning
nearly impossible. This often results in costly amendments after the installation took
place, in order to ensure the actually desired utilisation. It is therefore basically reasonable
to obtain extensive information serving as a foundation for every acoustic irradiation
conception.
Important fundamental information:
1. Architecture (installation possibilities)
● Where can speaker systems be placed and mounted
respectively?
● Are there any line-of-sight obstructions to be considered?
● How heavily can the hanging spots be stressed?
● Are there any objects in the room that may influence
the sound projection negatively (e.g. low-hanging illuminants)?
2. Optical integration
● Are there any limitations concerning the selection of
speaker systems in terms of dimension, colour, etc.?
● Have the loudspeaker systems to be hidden behind
the panelling, etc.?
● Is it possible to inconspicuously implement the
necessary cable ducts?
3. Budget
● How high is the purchase?
● Is it possible to find out the size of the budget?
Without information on the available budget, a precise
planning is hardly feasible.
Basic components of any sound system
Every sound system is, in its simplest form, composed of a
signal source, an amplifier and a loudspeaker. In order to
improve the quality and to adapt to the relevant room, other
audio components are integrated, depending on the tasks that
have been set. According to circumstances and requirements,
these components are systematically chosen and adjusted
exactly to the room that is to be irradiated acoustically.
Pro-Sound system
Systems for high-performance acoustic irradiation in town
halls, stadiums and arenas, which primarily serve for the
transmission of music and orators, are called Pro-Sound
systems.
This kind of acoustic irradiation demands a great deal of the
equal level distribution and the frequency response. In many
projects, alarm system and high-performance acoustic irradiation
are linked with each other for financial reasons. It is
important, that in such cases the requirements of the EN
60849 are applied to the whole system. Pro-Sound systems
use low-impedance technology in order to achieve good
transmission qualities in the bass range. Unlike 100 V PA
systems, which only operate in MONO, Pro-Sound systems
for the most part use STEREO. A stereo signal is sensibly
used, only if at least two loudspeakers as well as two power
amplifiers are supplied and if the listener is in an adequate
position and distance to the speakers. Ideally, the listener
should form an equilateral triangle with the loudspeakers
(see fig. 1).
4. Profile of requirements
● What does the utilisation profile (focuses) of the
sound system look like? Are there any specifications
to be considered respectively?
● Is the utilisation profile actually practicable in regard
of the budget and/or the room´s nature? (e.g. “I´d like
to have Hi-Fi sound with 115 dB sound pressure in all
places, but the loudspeakers can only be installed
beneath the stage.”)
LS 1
Listener
LS 2
Fig. 1
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