9
ENGLISH
NOTES ABOUT CONSTANT VOLTAGE SYSTEMS
- The loudspeaker input voltage (Vd) shall correspond to the amplifier output
voltage (Va).
- The sum of nominal power values (Pd x n) of all loudspeakers connected to
the line shall not exceed the amplifier power (Pa).
- Make sure all loudspeakers are connected in phase to ensure a correct
sound reproduction.
- Always use cables having wires with an adequate cross-section, considering
the cable length and the total loudspeaker power.
- Loudspeaker lines must be kept separated from mains cable, microphone
cables or others, in order to avoid inductive phenomena may cause hum
or noises.
- Use loudspeaker cables having twisted wires to reduce hum caused by
inductive effects due to coupling with electromagnetic fields.
AMPLIFIER
Pa = Amplifier power
Pd = Speaker power
n = Number of speakers
Vd = Speaker input voltage
Va = Amplifier output voltage
Pa > Pd x n Va
Vd=Va Vd=Va Vd=Va
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