Valcom V-1222 사용자 설명서

 3 

947221 

 

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 

 

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 

Control 

•  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. 
 

Volume Control

Input 1

    Input 2

 Power

Input 1

Screw Connection Location and

Designations - Figure 4

 

 

 

 MUSIC
SOURCE

POWER

SUPPLY

   PAGE
CONTROL

     DUAL INPUT
CEILING SPEAKER

INPUT 2

POWER

INPUT 1

FIGURE 5

 

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. 
 

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. 
 

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). 

 

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