V
OICE
S
YSTEMS
- C
LUB
M
INI
- U
SER
’
S
G
UIDE
8
EEN
N
U
USSA
AG
GEE SSU
UG
GG
GEESSTTIIO
ON
NSS
U
USSA
AG
GEE SSU
UG
GG
GEESSTTIIO
ON
NSS
The acoustic characteristics of the room/environment in which a sound system is
used have sometimes very significant effects on the overall sound produced.
Thanks to its special technical features, VOICE SYSTEMS speakers help reduce or
prevent some of the most common problems.
However, some factors should be borne in mind as they may help to optimise its
performance.
• Do not place speakers in the corners of a room or in recesses (e.g. niches), since
this causes an increase in the low frequencies, producing sounds which are re-
dundant or blurred.
• Do not place speakers against a wall, as this also causes an increase in the low
frequencies, although less pronounced than that produced in a corner or niche.
N.B.: on the other hand, this phenomenon may sometimes be used to advantage
to reinforce the low range, but it must be employed carefully and in a controlled
way.
• Do not place speakers straight on a stage, a floating floor or any other support
with cavities, as this tends to trigger resonances that alter and interfere with the
overall sound.
N.B.: solid supports should always be used when possible, or a speaker stand.
• Remember that high frequencies have a high level of directivity and a much
higher absorption coefficient than low frequencies. Therefore, to guarantee that
the signal reaches the listener in an intelligible form, position speakers so that
they are in a direct line with the audience (clearly visible) about ½ meter /
1meter above the audience’s heads.
• In buildings with a lot of reverberation (places of worship, gymnasiums, etc.)
first of all keep the sound reflections down using materials which absorb sound
(carpets, curtains, special panels, etc.). If this is not possible or is not sufficient,
do not simply turn up the volume, because this will also increase the volume of
the reflected sound, and may make the situation even worse. The best solution
is to use more speakers, placed around the room and closer to the audience (e.g.
front+back; front+sides; front+sides+back).
