Issue 10
1
947049
V-1048C - 45 OHM TALKBACK HORN
INTRODUCTION
These instructions contain the specifications and
guidelines necessary to install, operate, and
maintain the V-1048C, 45 Ohm Talkback Horn.
SPECIFICATIONS
Applications
The V-1048C talkback horn is designed to be
used with "handsfree" talkback control units. In
combination with these units, the speakers
provide both loudspeaker and talkback
functions.
A standard talkback paging system is comprised
of three basic components:
1. Talkback Page Control Unit
2. Speakers
3. Power Supply
Consult your Valcom distributor for assistance in
selecting a control unit and power supply.
Features
45 Ohm input impedance
Easy connection using twisted pair wiring
Universal mounting base
Nominal Specifications
Input Impedance:
45 Ohm
Dimensions & Weight
7.4" H x 10.0"W x 10.4"D
(18.8cm H x 25.4cm W x 26.4cm D)
3.4 lbs. (1.5kg)
Environment
Temperature:
-20 to +55
o
C
Humidity:
0-95% non-precipitating
Limitations
Two talkback speakers maximum per zone
(depending on controller)
800 feet maximum cable length to speaker
NOTE: Do not split pairs to speakers.
Do not use talkback in noisy areas (80 dB or
greater)
Coverage
The distance you can be away from a speaker
and still have good talkback depends on the type
of speaker
and ambient noise level.
The speaker should be as close as possible to
the area where talkback is desired. It should not
be mounted close to, or pointed at, noise
producing equipment such as fans, air
conditioners, machinery, or compressors.
