10 947100
It is cost effective to expand a centrally amplified
paging system with Valcom distributed amplified
speakers. In many instances expanding a centrally
amplified paging system involves replacement of the
expensive central amplifier with a larger one in order
to provide the additional power that the speakers or
horns require.
This also involves additional labor in re-balancing the
system. Adding high voltage type speakers to an
existing amplifier where the load is not configured
properly will cause distortion or premature system
failure, again requiring replacement of the central
amplifier. By using Valcom distributed amplified
speakers to expand the system, almost unlimited
growth is possible, without loading down the existing
amplifier.
ADVANTAGES OF DISTRIBUTED AMPLIFIED SYSTEMS
•
Low voltage, therefore existing telephone cable (Class 2 wiring) can be used to eliminate costly outside plant or
indoor conduit.
•
Low voltage operation means much less power dissipation (heat), therefore the longevity of the paging
equipment is increased dramatically.
•
Multizone capability of 96 zones from a single trunk port. (Up to 576 Zones with All Call with multiple
systems connected for Global All Call – Call Valcom Technical Support for assistance)
•
Talkback, one-way or combination systems are easy to configure.
•
Individual volume controls built-in to each one-way speaker for volume adjustment after system is installed.
•
It is cost-effective to install one telephone cable versus installing both telephone cable and 70 volt shielded
paging cable.
•
Unlimited one-way speaker expansion since each speaker is self-amplified.
•
Jobs requiring explosion-proof systems are easily accommodated.
•
Amplified one-way speakers can interface 70 volt systems without changing or adding central amplifier.
•
Many localities require conduit for "high voltage" (Class 1) conductors, this is rarely a necessity with a
distributed amplified system.
•
The rated output of a distributed amplified paging speaker or horn is always available due to the fact that the
actual audio signal amplification is accomplished on an individual basis. In a 70 volt system, the rated output is
only available if the central amplifier is actually providing a full 70 volts to the speaker or horn and the audio
signal line losses are negligible.
•
Background music is unaffected in zones that are not currently being paged.
