Design and Construction Handbook - Los Angeles World Airports

Guide Specification
2. Provide three dual input telephone interface stations.
X. Loudspeakers shall be the type and number depicted in the contract drawings and as required by
the Contract Documents.
Y. Amplification shall:
1. Be provided as shown in the Contract Drawings.
2. Provide full bandwidth signals to those loudspeakers that have a single, full range audio
input.
3. Provide crossovers and a high and low frequency signal to those loudspeakers which are
bi-amplified.
4. Be capable of supplying 4 Ohm, 8 Ohm, 16 Ohm and 70 Volt output without the use of a
transformer.
5. Be provided with adequate cooling for the amplifiers, as recommended by the amplifier’s
manufacturer.
Z. Connection to the emergency announcement system:
1. Emergency messaging shall be automatically initiated whenever the system is notified of
a general alarm condition in the new Terminal.
PAGING SYSTEMS
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a. Whenever a local alarm condition is detected by the fire alarm system, the fire
alarm system will initiate immediate notification of the alarm condition to the
Dispatch Center.
b. If a General Alarm Condition is annunciated the fire alarm system will
immediately provide contact closure to the system.
c. The system shall automatically broadcast emergency instructions whenever a
General Alarm notification is transmitted. The System emergency message shall
repeat for a minimum of 20 minutes or until the fire alarm system is manually
reset.
2. The system shall be provided with a sensing input which will accept a relay or contact
closure from the fire alarm system which will completely and fully mute the system.
3. When the relay or contact closure is removed, the system shall return to normal
operational status with the settings that were active and in place just prior to the system's
receipt of the contact closure.
Communication Systems