Wheelock MZC-144 Manual de instrucciones descargar pdf (Pagina 6)

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Sheet 6 of 26

Figure 3:

One Central Amplifier which does not have music mute, and which has only one input.

(One Way Paging and/or Optional Talk-Back)

In this application, the one central amplifier for both paging and background music does not provide music muting, and has only

one input (one, or no volume control). The system uses speakers with built-in line matching transformers for both One Way

paging, and paging with optional Talk-Back.

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

(PAGING AND

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

GROUP 2

MZEM-3

GROUP 3

MZEM-3

GROUP 4

MUSIC

LINE MUSIC IN

BACKGROUND MUSIC)

(SEE NOTE 1)

PRM-150

OPTIONAL

PREAMPLIFIER

*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 the background music source has no volume control, then the optional PRM-150 must be connected between the

background music source and the MZC-144 music input, as shown.

2. In systems with optional Talk-Back paging, install one background music source only as shown. DO NOT connect

background music source directly to zone group music inputs as improper operation may result.

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Wheelock MZC-144 Manual de instrucciones Pagina 6

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