Wheelock MZC-144 Manual de instrucciones Pagina 11

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P83259 H
Sheet 11 of 26
Figure 8:
Zone Amplifiers which do not have music mute, and which have one input.
(One Way Paging)
In this application, the zone amplifiers for both One Way paging and background music do not provide music muting, and have
only one input (with or without volume control). The system uses speakers with line matching transformers.
MUSIC
SOURCE
POWER
SUPPLY
24VDC
GND (+)
FROM TELEPHONE *
+
-
BACKGROUND
MZC-144
SYSTEM
(-) 24VDC
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
PRM-150
PREAMPLIFIER
(SEE NOTE)
25V/70V/100V
ZONE
AMPLIFIER
TYPICAL SPEAKERS
WITH TRANSFORMERS
#12
#1
AMPLIFIER
ZONE
WITH TRANSFORMERS
TYPICAL SPEAKERS
A
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. One music source can be used for all zone groups, or different music sources can be used for different zone groups.
2. Existing system renovations and expansions often require different amplifier configurations in different zone groups. For
example, an existing central amplifier paging system may be zoned, and then expanded by adding amplified speakers or
zone amplifiers. With the appropriate configured switch selections, the following are some examples of mixed system
possibilities. Figure 2 and Figure 6; Figure 2 and Figure 7; Figure 2 and Figure 8; Figure 3 and Figure 6; Figure 3 and
Figure 7; Figure 3 and Figure 8; Figure 4 and Figure 6; Figure 4 and Figure 7; Figure 4 and Figure 8; Figure 5 and Figure
6; Figure 5 and Figure 7; Figure 5 and Figure 8.
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