Issue 7
DUAL INPUT
ONE-WAY AMPLIFIED INTERIOR SPEAKERS
INTRODUCTION
The V-1220 and V-1222 are dual Input
One-Way Amplified Speaker assemblies for use
with any one-way or handsfree page control
unit. These speakers are for interior use only.
These instructions contain the specifications and
information necessary to install, operate and
maintain the Dual Input One-Way Amplified
Interior Speakers.
V-1220
V-1222
SPECIFICATIONS
Power Requirements
•
•
Voltage
Current
-24VDC
50mA
Applications
•
•
One or Two-Way Page Controls
Electronic Key System Page Ports (interface
adapter may be required)
Environment
•
•
Temperature
Humidity
0 to 50 Degrees C
•
PABX Page Ports (interface adapter may be
required)
0 - 85% non-precipitating
•
•
•
Stand Alone Systems
Existing 70V Paging Systems
Background music systems
DESIGN
The Valcom Dual Input One-Way Amplified
Interior Speakers may be used to provide
one-way paging from one-way or talkback page
controls. The speakers provide a means for
connecting one speaker to two audio sources,
making it easy to provide features such as
background music, group call, or emergency
override. These speakers can also be used to
expand existing 70V paging systems. When
power and the appropriate input signal are
applied, voice page can be made.
Features
•
Self-contained dual input amplifier and
volume controls
8 inch cone type speaker
Operates on -24VDC
All speakers wired with 3 pair station cable
Screw terminals for all connections
•
•
•
•
Dimensions/Weight
•
V-1220 - Ceiling Speaker
13.0" Dia. X 3.0" D
(33cm Dia. X 7.6cm D)
3.8 lbs. (1.73 kg)
Page Control Access
When using the One-Way Amplified Speakers
with a Page Control, the following equipment will
be required:
•
V-1222 - Wall Speaker
•
Appropriate one-way speaker
assembly
Page Control
Power Supply sized to provide
power to operate the amplified
speaker assemblies and page
control. (See Figure 1 for Page
System Block Diagram)
10.6"H x 9.7"W x 5.2"D
(26.92cm H x 24.63cm W x 13.20cm D)
4.4 lbs. (2.0 kg)
•
•
Nominal Specifications
•
Amplifier Input Impedance
1000 Ohms Nominal
•
•
Amplifier Input Level
Amplifier Output
-10dBm Nominal
1 Watt into 45 Ohm
speaker load
1
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DUAL INPUT
CEILING SPEAKER
Table 1
# of Speakers per Audio Run
MUSIC
SOURCE
Wire Run in Feet
# of Speakers
INPUT 2
100
200
400
800
1600
150
150
100
50
POWER
SUPPLY
POWER
INPUT 1
25
PAGE
CONTROL
Table 2
# of Speakers per Power
Wire Run in Feet
# of Speakers
FIGURE 5
(22 AWG)
100
200
400
800
1600
30
30
15
7
25V or 70V Paging Systems
The Dual Input One-Way Amplified Speakers
may be used to expand an existing 25V or 70V
paging system without placing an additional load
on the amplifier by connecting one input of the
speaker directly to the 8 Ohm output of one of
the existing 70 Volt transformers tapped at 1/4
watt. A power supply will also be required.
3
INSTALLATION
Page Control Access
The Valcom Dual Input One-Way Amplified
Interior Speakers provides a means for
connecting one speaker to two audio sources.
A standard paging system is made up of 3 basic
components:
Background Music
The Valcom Dual Input One-Way Amplified
Speaker may be used for providing background
music on a per zone basis along with one-way
voice paging. The music source is connected to
Input 2 Tip and Ring. The page zone output is
connected to Input 1 Tip and Ring.
•
•
•
Appropriate one-way speaker assembly
Page Control
Power Supply sized to provide power to
operate the amplified speaker
assemblies and page control
NOTE: When using the Dual Input One-Way
Amplified Interior Speakers with background
music and a handsfree page control unit, it is
recommended that a V-1094A Page Port
Preamp/Expander be connected between the
zone output and the speaker input to eliminate
backfeed of the background music to the
handsfree control unit.
NOTE: When using the Valcom Dual Input
One-Way Interior Speakers with a handsfree
page control, it is recommended that a V-1092
Volume Control be connected between the zone
output and the speaker input to lower the signal
level to the one-way speakers (to prevent
overdriving of inputs).
Group Call
See Figure 4 for Screw Connection Location
and Designations. See Figure 5 for the required
connections when using the Dual Input
One-Way Amplified Interior Speakers with a
page control.
The Valcom Dual Input One-Way Amplified
Speakers may be used with a multi-zone page
control to provide simultaneous paging to a
group of zones. When it is used for group call,
Input 1 is connected to an assigned zone
number. Input 2 is connected to the zone
number that will be used for the group call page.
Input 2
Power
Input 1
NOTE: When using the Valcom Dual Input
One-Way Interior Speakers with a handsfree
page control, it is recommended that a V-1092
Volume Control be connected between the zone
output and the speaker input to lower the signal
level to the one-way speakers (to prevent
overdriving of inputs).
Volume Control
Input 1
Screw Connection Location and
Designations - Figure 4
See Tables 1 and 2 for wiring specifications for
these speaker assemblies.
3
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Mounting
TECHNICAL ASSISTANCE
When trouble is reported, verify there are no
broken connections. Assistance in
troubleshooting is available from the factory.
Call (540) 563-2000 and ask for Technical
Support, or visit our website at
V-1220 - Ceiling Speaker: To install speaker
assembly, measure and cut an 8-1/2" hole in
center of ceiling tile. (If using a V-9914M-5
bridge, V-9915M-5 backbox, or V-9916M bridge
and backbox, follow instructions supplied with
these assemblies).
Connect station or other suitable wire to proper
speaker terminals as labeled. Mount speaker to
ceiling tile. Ideal mounting height should be
between 7 and 23 feet.
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 the nature of the problem. Send the unit to:
V-1222 - Wall Speaker: Unscrew the speaker
bracket and mount the bracket to the wall (ideal
mounting height is 8 to 12 feet above floor level).
Connect station or other suitable wire to proper
speaker terminals as labeled. Mount speaker
on bracket.
Valcom, Inc.
Repair and Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
TABLE 3
TROUBLESHOOTING CHART
PROBLEM
CORRECTIVE ACTION
1. No audio from speaker.
1. Make certain volume control is turned up (clockwise).
2. Check presence of -24VDC and GND.
3. Using a lineman's test set, check for the proper audio level on
the Tip and Ring leads, and if necessary also at the source.
2. Low volume from speaker.
3. Loud squeal (feedback)
1. Make certain volume control is turned up.
2. Check voltage at the speaker assembly when in use, -18 to
-24VDC required.
3. Using a lineman's test set, check for the proper audio level on
the Tip and Ring leads. It is possible that some low level audio
will be heard with only one side of Tip and Ring connected.
1. Turn down volume (counter clockwise) of speaker.
2. Increase the distance between the telephone and speaker.
3. Install a confidencer on the telephone in severe problem areas.
VALCOM LIMITED WARRANTY
Valcom, Inc. warrants its products to be free from defects in materials and workmanship under conditions of normal use and service for a period of
one year from the date of shipment. The obligation under this warranty shall be limited to the replacement, repair or refund of any such defective
device within the warranty period, provided that:
1.
2.
3.
inspection by Valcom, Inc. indicates the validity of the claim,
the defect is not the result of damage, misuse, or negligence after the original shipment.
the product has not been altered in any way or repaired by others and that factory sealed units are unopened (A service charge plus parts
and labor will be applied to units defaced or physically damaged),
4.
5.
freight charges for the return of products to Valcom are prepaid,
all units ‘out of warranty’ are subject to a service charge. The service charge will cover minor repairs (Major repairs will be subject to
additional charges for parts and labor).
This warranty is in lieu of and excludes all other warranties, expressed or implied, and in no event shall Valcom, Inc. be liable for any
anticipated profits, consequential damages, loss of time or other losses incurred by the buyer in connection with the purchase, operation,
or use of the product.
This warranty specifically excludes damage incurred in shipment. In the event a product is received in damaged condition, the carrier should be
notified immediately. Claims for such damage should be filed with the carrier involved in accordance with the F.O.B. point.
Headquarters:
Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019-5056
Phone: (540) 563-2000
FAX: (540) 362-9800
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