7 947100
Table 6 – Number of Speakers per Power Run
(CAT 3/5/5E/6, 22 & 24AWG)
Bridges and Backboxes
Ceiling speaker bridges provide support to
prevent ceiling tile from sagging from the weight of
the speaker. They are designed for use with
standard 2' wide ceiling tiles and distribute the
weight of the speaker assembly across the tile
and onto the tile support grid.
Ceiling speaker backboxes provide an acoustic
enclosure behind the speaker for better sound
quality. They also protect the speaker from debris
in the ceiling and meet most local fire codes for
use in air plenum return ceilings. See Table 9 for
Speaker and Bridge/Backbox compatibility.
Volume Adjustments
Master volume controls are located on most
Valcom page control units. Each one-way
speaker assembly also has its own volume
control. When installing a system, set the master
control to ½, and all speaker and horn volume
controls to 1/2 volume. After powering up the
system, adjust the individual speakers to the
desired level.
The master control may then be used to change
the volume of the entire system. If background
music is being supplied, the background music
level should be adjusted last. To provide volume
control to a certain room or area, V-1092 or
V-2992-W Wall Mount Volume Controls may be
added to a zone, or to a section of a zone.
SYSTEM OPERATION
Circuit Description
Each Valcom page control unit contains the
circuitry required to interface with a telephone
system, plus a preamplifier circuit, and in some
cases dial select circuitry and/or provisions for
background music switching. Each one-way
amplified speaker assembly contains a speaker,
amplifier, and volume control in a suitable baffle or
housing. The speakers and control units require a
-24VDC power supply (-48VDC for the V-1038) to
operate.
Connections from the control unit to the telephone
system are described in detail in the manual that
is shipped with the control unit.
The audio pair from the control unit to the
speakers may be looped (speakers wired in
parallel) between all speakers in a zone (See
Table 5). A second pair must be run to each
speaker to supply the DC voltage required for
operation (See Table 6). Standard 22 or 24AWG
telephone cable may be used for the speakers.
When accessing a single zone control unit from
the telephone system, you will immediately be
connected to the speakers and allowed to page.
When accessing a multizone control unit from the
telephone system, you will receive Valcom dial
tone from the Valcom unit. After dialing the code
for the zone desired, you will be connected to that
group of speakers and allowed to page. All
Valcom control units automatically release when
you hang up the telephone.
TECHNICAL ASSISTANCE
Refer to the installation practices for the
equipment being used for troubleshooting
information and procedures.
Assistance in
troubleshooting is available from the factory. Call
(540) 563-2000 and press 1 for Technical
Support.
Valcom equipment is not field repairable. Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the
unit clearly stating company name, address,
phone number, contact person, and nature of the
problem. Send the unit to:
Valcom, Inc.
Repair & Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
Quantity of Speakers/Horns
Maximum
Wire Run
Distance (Ft)
1 Watt
Interior
Spkrs
Signature
Series
5W
15W
30W
24
AWG
22
AWG
4
7
15
30
1
2
4
8
-
1
2
4
-
-
-
1
1000
500
250
125
1600
800
400
200
