8 947100
Table 8 - Number of Speakers per Power Run
(CAT 3/5/5E/6, 22 & 24 AWG)
Quantity of Speakers/Horns
Maximum
Wire Run
Distance (Ft)
1 Watt
Interior
Speakers
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
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 1/2 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 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 7). A second pair must
be run to each speaker to supply the DC voltage
required for operation (See Table 11). 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
