Valcom V-1226, V-1224 Service Manual

ONE-WAY AMPLIFIED INTERIOR SPEAKERS

V-1220

DUAL INPUT

VSP-Dual Input One Way Amp. Spkrs

Issue 5

V-1226, V-1222, V-1224

INTRODUCTION

The V-1220, V-1222, V-1224, and V-1226 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.

SPECIFICATIONS

Applications

•

One or Two-Way Page Controls

•

Electronic Key System Page Ports (interface
adapter may be required)

•

PABX Page Ports (interface adapter may be
required)

•

Stand Alone Systems

•

Existing 70V Paging Systems

•

Background music systems

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)

2.6 lbs. (1.18 kg)

•

V-1222 - Wall Speaker

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)

•

V-1224 - Corner Speaker

10.6"H x 9.7"W x 6.3"D
(26.9cm H x 24.6cm W x 16cm D)

3.6 lbs. (1.63 kg)

•

V-1226 - Corridor Speaker

10.3"H x 10.3"W x 4.2"D
(26.2cm H x 26.2cm W x 10.7cm D)

6.5 lbs. (3.0 kg)

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Nominal Specifications

•

Amplifier Input Impedance

1000 Ohms Nominal

•

Amplifier Input Level -10dBm Nominal

•

Amplifier Output 1 watt into 45 Ohm spkr load

Power Requirements

•

Voltage -24VDC

•

Current 50mA

Environment

•

Temperature 0 to 50 Degrees C

•

Humidity 0 - 85% non-precipitating

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.

Page Control Access

When using the One-Way Amplified Speakers with a
Page Control, the following equipment will be
required:

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).

25V or 70V Paging Systems

When using the One-Way Amplified Speakers with
an existing 25 or 70V paging system, the following
equipment will be required:

•

Appropriate one-way speaker assembly

•

Power supply sized to provide power to
operate the amplified speaker
assemblies

•

25V or 70V line transformer tapped at
1/4 watt with an 8 Ohm output

Background Music

The Valcom Dual Input One-Way Amplified
Speakers may be used with a page control for the
purpose of providing background music on a per zone
basis along with one-way voice pa ging (See Figure 2
for a Backgr ound Music Block Diagram).

NOTE: When using the Dual Input One-Way
Amplified 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 cont rol unit.

•

Appropriate one-way speaker assembly

•

Page Contro l

•

Power Supply sized to provide power to
operate the amplified speaker
assemblies and page control. (See
Figure 1 for Page System Block
Diagram)

SECOND

AUDIO

SOURCE

DUAL INPUT

PAGE

CONTROL

POWER
SUPPLY

FIGURE 1 - PAGE SYSTEM BLOCK DIAGRAM

ONE-WAY
AMPLIFIED
SPEAKER

NOTE: When using Valcom Dual Input One-Way
Interior Speakers with a handsfree page control, it is

MUSIC

SOURCE

*

PAGE

CONTROL

FIGURE 2 - PAGE SYSTEM BLOCK DIAGRAM

* The V-1094A is recommended when using
Handsfree Page Control

V-1094A

POWER
SUPPLY

DUAL INPUT

ONE-WAY
AMPLIFIED
SPEAKER

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Group Call

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.
(See Figure 3 for a Group Call Block Diagram).

INPUT 1

ZONE 1

PAGE
CONTROL

FIGURE 3 - GROUP CALL BLOCK DIAGRAM

ZONE 2

ZONE 8
(Group 1)

POWER
SUPPLY

INPUT 2

INPUT 1
INPUT 2

DUAL INPUT
ONE-WAY
AMPLIFIED
SPEAKERS

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).

Speaker Cabling

All Valcom Dual Input Amplified One-Way Interior
Speakers require six conductor wire, standard 22 or
24 gauge station wire is acceptable. Shielded wire is
not required or recommended. Refer to Tables 1 and
2 when planning a system.

Coverage

V-1220 - Ceiling Speaker: The area covered by a
ceiling speaker is determined by the height of the
ceiling. If the ceiling height is 8', the speaker will
cover approximately 250 sq. ft.; if 9 to 15', the
speaker will cover approximately 400 sq. ft.; if 15 to
35' high, the speaker will cover approximately 850 sq.
ft.

V-1222C, V-1224C - Wall Speakers: These wall
speakers will cover an area up to 600 sq. ft. Wall
Speakers should be spaced 20 feet apart. Good
quality paging will be heard up to 30 feet in front of
the speaker.

V-1226C - Corridor Speaker: Corridor speakers
should be placed every 30 to 40 feet.

Table 1

# of Speakers per Audio Run

Wire Run in Feet # of Speakers

100 150
200 150
400 100
800 50

1600 25

Table 2

# of Speakers per Power

Wire Run in Feet # of Speakers

(22 AWG)

100 30
200 30
400 15
800 7

1600 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:

•

Appropriate one-way speaker assembly

•

Page Contro l

•

Power Supply sized to provide power to
operate the amplified speaker
assemblies and page control

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).

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.

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Input 2 Power Input 1

g

Volume Contro l

Input 1

Screw Connection Location

nations - Figure

Desi

DUAL INPUT
CEILING SPEAKER

Group Call

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.

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).

MUSIC
SOURCE

POWER
SUPPLY

PAGE
CONTROL

FIGURE 5

INPUT 2

POWER

INPUT 1

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.

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.

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.

See Tables 1 and 2 for wiring specifications for these
speaker assemblies.

Mounting

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.

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.

V-1224 - Corner Speaker: Connect station or other
suitable wire to proper speaker terminals as labeled.
Drive a finishing nail into desired corner and hang the
speaker on the nail. Ideal mounti ng height is 8 to 12
feet above floor level.

V-1226 - Corridor Speaker: Select a suitable location
giving adequate consideration to the weight of the
unit. Be sure unit is positione d high enough to
provide clearance for persons passing by.

Unscrew mounting bracket and mount to wall. After
making the required connections, reattach the speaker
to the mounting bracket.

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TECHNICAL ASSISTANCE

When trouble is reported, verify there are no broken
connections. Assistance in troubleshooting is
available from the factory. Call [phone] and
ask for Technical Support, or call [phone] for
Valcom 24-hour Automated Support or visit our
website at http ://www.valcom.com.

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:

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. 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.

3. Loud squeal (feedback) 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 i ts products to be free from defects in mat eri al s and workmanship under conditions of normal use and
service for a period of one year from the date of shipment. The obl i gation under this warranty shall be lim i ted to the replacement,
repair or refund of any such defecti ve device within the warranty period, provided that:

1. inspection by Valcom, Inc. indicat es the validity of the clai m,

2. the defect is not the res ul t of damage, mis use, or negligence after the original shipment.

3. the product has not been altered in any way or repaired by others and that factory sealed units are unopened (A service

4. freight charges for the return of products to Valcom are prepai d,

5. all units ‘out of warranty’ are subject to a service c harge. The service charge will cover minor repairs (Major repairs will

This warranty is in lieu of and excludes all other warranties, expressed or implied, and in no event shal l 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 recei ved i n damaged condition, the
carrier should be notified immediately. Claims for such damage s houl d be filed with the carrier involved in accordance with the
F.O.B. point.

charge plus parts and labor will be applied to units defaced or physic ally damaged),

be subject to additional c harges for parts and labor).

Headquarters: In Canada

Valcom, Inc. CMX Corporation

1111 Industry Avenue 35 Van Kirk Drive #11 and 12

Roanoke, VA 24013 Brampton, Ontario L7A1A5

Phone: [phone] Phone: [phone]

FAX: [phone] FAX: [phone]

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