ic audio
EV-5000
EN
18
12. Special Setups
12.1 Sample configuration with one amplifier driving 3 zones
In this sample two operational and one backup (spare) amplifier are applied. Please keep in mind,
if a call goes to zone 2,3 or 4 the background music will be stopped in all these zones. Of course
zone 1 will not be affected.
Programming for distributing a call in zone 3 for instance shall be executed as follows:
Activate audio on CH2, on all other channels audio has to be deactivated.
Energise relays 2 and 4 as a call goes to zone 3.
As already mentioned, relays have to be activated, which must switch OFF zones. In principle the
same is valid for emergency announcements or inhouse messages (MSG) for instance.
During a call, switched OFF zone speaker lines were connected to the backup amplifier by the line
relays. The backup amplifier provides for the check tone too, so that switched OFF zones are
monitored permanently.
Power Amplifiers
CH1 OUT
CH2 OUT
CH3 OUT
CH4 OUT
SPARE AMP IN
OUT Spare Amp
OUT CH1
OUT CH2
OUT CH3
OUT CH4
AMP IN
AMP IN
AMP IN
AMP IN
Spare Amplifier
Input
Matrix
Line Relays and
Monitoring
