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   Issue 

 

1

 947221 

 

 
 

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

 

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) 

 

3.8 lbs. (1.73 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) 

 

Nominal Specifications

 

  Amplifier Input Impedance 

 

 

 

1000 Ohms Nominal 

  Amplifier Input Level 

-10dBm Nominal 

  Amplifier Output              1 Watt into 45 Ohm  

                                                  speaker load 

 

 
 
 
 
 
 
 
             

              V-1220                                   V-1222    

 
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: 

  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) 

 

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