Instruction manual

P83259 H
Sheet 7 of 26
Figure 4:
Two Central Amplifiers, one for paging and one for background music.
(One Way Paging Only)
In this application, two central amplifiers are used, one for paging and one for background music. The system uses speakers
with built-in line matching transformers for One Way paging.
MUSIC
SOURCE
POWER
SUPPLY
24VDC
25V/70V/100V
GND (+)
ZONE 1
FROM TELEPHONE *
CENTRAL
AMPLIFIER
WITH TRANSFORMER
+
-
TYPICAL SPEAKER
BACKGROUND
TYPICAL SPEAKER
WITH TRANSFORMER
AMP. 1
MZC-144
AMP. 1
SYSTEM
ZONE 12
(-) 24VDC
OUT
IN
(PAGING)
MUSIC
ZONE 1
ZONE 2
ZONE 3
MUSIC
ZONE 4
ZONE 5
ZONE 6
MUSIC
ZONE 7
ZONE 8
ZONE 9
ZONE 10
ZONE 11
ZONE 12
GROUP 1
MZEM-3
#1
GROUP 2
MZEM-3
#2
GROUP 3
MZEM-3
#3
GROUP 4
MUSIC
P
A
(SEE NOTE 1)
PRM-150
OPTIONAL
PREAMPLIFIER
AMPLIFIER
CENTRAL
(MUSIC)
(SEE NOTE 2)
A
25V/70V/100V
*NOTE: Use Tip CO and Ring CO for stand alone telephone, unused CO line/trunk port, or 600 ohm audio page port
connections.
NOTES:
1. If both the music central amplifier and the background music source have no volume controls, then a PRM-150 must be
connected between the background music source output and the music central amplifiers input.
2. Different music sources, each with its associated music amplifier (and optional PRM-150 as required), can be used for
different zone groups.