Valcom V-1920C Service Manual

Issue 1

INSTALLATION INSTRUCTIONS FOR

V-1920C

INTRODUCTION

The Valcom V-1920C are self-amplified and
capable of reproducing voice paging as well as
background music. The V-1920C features a
removable volume control knob. With the knob
removed, the volume may be adjusted by
screwdriver through the center hole on the
grille. The speakers require -24VDC, 50mA (1­power unit). The speaker is 8 inch.

Page
Out

Valcom Page
Control

(Tip/A)

(Ring/B)

(-24Vdc )

(Gnd)

FIGURE 1: TYPICAL CONNECTION

One-Way
Amplified
Speaker

Valcom -24 Vdc
Power Supply

DIMENSION/ WEIGHT

1.5” L x 11.5” W x 3.0” D
(29.2cm L x 29.2cm W x 7.62cm D)

2.6 lbs. (1.18kg)

NOTE: Do not connect this speaker directly
to a 25/70/100 Volt amplifier as damage to
both the amplifier and speaker may occur.
A V-1095 may be used to allow the use of
Valcom self-amplified speakers on 70V
speaker lines.

FIGURE 2: CEILING INSTALLATION INSTRUCTIONS

1 947967

FIGURE 3: SURFACE MOUNT INSTALLATION INSTRUCTIONS

FIGURE 4: FLUSH MOUNT INSTALLATION INSTRUCTIONS

FIGURE 4A.

ROUGH DIMENSIONS

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FIGURE 4B.

COVERAGE

The area covered by a ceiling speaker is
determined by the height of the ceiling. If ceiling
height is eight feet, the speaker will cover 256 sq.
ft. With a ceiling height of ten feet, the speaker

will cover 400 sq. ft. If the ceiling is 20 feet high,
the speaker will cover 1600 sq. ft.

TECHNICAL ASSISTANCE

When trouble is reported, verify there are no
broken connections. Assistance in
troubleshooting is available from the factory. Call
[phone] and press 1 for
Technical Support, or visit our website at
http://www.valcom.com.

TROUBLESHOOTING CHART

SYMPTOMS ACTIONS

1. No audio from speaker 1a. Check that volume control is turned up (Clockwise).
1b. 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 2a. Check that volume control is turned up.
2b. Check voltage at the speaker assembly when in use, -18 to -

24VDC required.

2c. Using a lineman's test set, check for the proper audio level on 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) 3a. Turn down (Counter-clockwise) volume of the speaker.
3b. Increase the distance between the telephone and speaker.
3c. Install a noise canceling handset on the telephone in severe

problem areas.

3d. Add a V-9964, Digital Feedback Eliminator.

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. inspection by Valcom, Inc. indicates the validity of the claim;

2. the defect is not the result of damage, misuse 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

charge plus parts and labor will be applied to units defaced or physically damaged);

4. freight charges for the return of products to Valcom are prepaid;

5. 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: In Canada
Valcom, Inc. CMX Corporation
5614 Hollins Road 35 Van Kirk Drive #11 and 12
Roanoke, VA 24019-5056 Brampton, Ontario L7A 1A5
Phone: [phone] Phone: [phone]
FAX: [phone] FAX: [phone]

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

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