PUBLIC ADDRESS SYTEM
· Computer Controlled Centre Unit will be operated according to zone
selectivity principle for public address, emergency public address and
background music. · The public address, emergency public address and
background music shall be done at all floors including elevator halls
and inside of all elevators. · There will be second loudspeaker in each
elevator for fire announcement over fire alarm system. · Even if there
is a local music distribution at special areas such as conference hall,
cafeteria etc, it will be possible to have an emergency announcement
bypassing the local music distribution. · At all office floors above
podium, each floor will be a separate zone except core. · At Sound distribution
system centre, there will be a computer controlled central unit and
computer controlled power amplifiers. · Public address system distribution
will be 100 V distribution systems. · As musical sources there will
be multi CD player, deck tape and for the announcement microphone will
be used. · Loudspeakers will have 6 W RMS line transformers. The matching
line transformers will have 1.5W, 3W and 6W taps. In general loudspeakers
will be ceiling type and suspended ceiling type only at some technical
and office rooms wall type will be used.