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Mixing Talkback and One-Way
Paging
When using a Talkback Control Unit, one-way
and talkback zones may be mixed on the same
control unit. The outgoing page on a talkback
zone may also be expanded by adding one-way
speakers.
To make a zone one-way, simply add a V-1092
volume control and Valcom one-way amplified
speakers to that zone (maximum 40 per zone).
To expand the outgoing page on a talkback
zone, wire one-way amplified speakers in
parallel with the talkback speakers on that zone
(maximum 40 per zone). Of course, when you
do this you still will only be receiving talkback
from the 45 ohm talkback speakers on the zone.
NOTE: When using one-way amplified
speaker assemblies on a talkback control
unit, a V-1092 Volume Control or a
V-1094A Page Port Preamp may be used
to attenuate the high level talkback audio
level prior its appearance at the audio
input of the one-way speakers (talkback
audio is substantially higher in level in
comparison to one-way audio).
Talkback Speakers
Valcom Talkback Speakers are available in
many styles to accommodate virtually any
environment. Please refer to our complete list of
speakers and options on our website at
www.valcom.com.
Our styles include:
Wall Speakers
Surface or Flush Mount
Woodgrain or Paintable Metal
Slimline style
Corner Mount
Double-sided style
Pendant Speakers
Ceiling Speakers
With or without LED
P-Tec for tile ceilings
2x2 Lay-In with Backbox
Desktop Speakers
Desktop or Wall Mount
Push Button Call Switch
Doorplate / Intercom Speakers
Flush Mount style
Brass, Steel or Vandal-Resistant
Surface Mount style
Call Activity LED Indicator
Horns
Water-resistant
Explosion-Proof
Flexhorn
Backboxes available
SYSTEM INSTALLATION
General
For specific wiring information, consult the
installation practice enclosed with the actual
equipment you are using
.
Precautions
Locate the Valcom equipment or cabling at least
18" away from power supplies, electrical panels,
or any equipment that generates electrical noise.
Additionally, locate the Valcom equipment within
6' of the Valcom or 1A2 power supply used to
power the unit(s).
Mounting
The control equipment should be installed at the
main distribution frame with the telephone
system common equipment.
Cabling
Standard 22 or 24 AWG twisted pair telephone
wire may be used for the speakers. Talkback
speakers require 1 pair (2 pairs when using
speakers with call-in switches). One-way
amplified speakers require 2 pairs (refer to the
One-Way Paging VSP).
MAXIMUM CABLE LENGTH TO TALKBACK
SPEAKERS IS 800 FEET
DO NOT SPLIT PAIRS
Grounding
For proper operation, the ground of the power
supply must be connected to a reliable ground.
CAUTION: Using an electrical ground may
put noise on the talkback.
High Power Amplifiers
In many cases an existing high power amplifier
may be connected to a zone output of the control
unit for one-way paging. Simply insert a V-1092
volume control and connect the zone audio
output to the auxiliary input of the amplifier.
NOTE: YOU CANNOT INCREASE THE
NUMBER OF TALKBACK SPEAKERS IN A
ZONE THROUGH USE OF A HIGH POWER
TALKBACK AMPLIFIER.
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