RCF BS 5EN - Notes about Constant Voltage Systems

10
ENGLISH
NOTES ABOUT CONSTANT VOLTAGE SYSTEMS
- The loudspeaker input voltage (Vd) shall correspond to the amplier output
voltage (Va).
- The sum of nominal power values (Pd x n) of all loudspeakers connected to
the line shall not exceed the amplier 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 elds.
AMPLIFIER
Pa = Amplier power
Pd = Speaker power
n = Number of speakers
Vd = Speaker input voltage
Va = Amplier output voltage
Pa > Pd x n Va