Specifications

The PCM system is very flexible in how it can provide background music throughout the system:
• Background music can be continuously supplied to all zones not being paged. (Requires two amplifiers of the
same power rating.)
• Background music can be supplied by the same amplifier that is supplying paging. (Music input is available on
amplifier.)
• Background music can be supplied by same amplifier that is supplying paging. (No dedicated music input
available on amplifier.)
• Background music or different background music can be supplied to a select group of zones.
• Background music can be supplied to self-amplified (LO-PWR) zones.
• Background music can be inhibited in select groups.
The BGM SRC terminals are used to control background music operations when using a single power amplifier
that does not provide a separate music input. This feature is only used when a single amplifier will be used for both
background music and paging (background music is lost in all zones when a page is made).
NOTE
: This input and its associated control is not used when using amplifiers with separate music inputs and
paging control terminals because background music is supplied directly to the amplifier.
7.1. Helpful Hints When Connecting Background Music to the Paging Control System
1. When using the BGMSRC (background music source) input on the PCMTIM as input for background music, the
music is muted to all speakers when any zone is selected. The source input signal is line level.
2. When the HPBGM (high-powered background music) input on the PCMCPU is used, music is muted only in the
zone selected. The source input has to be an amplified signal.
3. When the LPBGM (low power background music) input on the PCMCPU is used as an input for background
music, music is muted only to the zone selected. In this application, either amplified speakers or an amplifier per
zone is used. PCMZPM output power switch is set to LO-PWR. The input background music is line level.
4. When the Local BGM input on the PCMZPM is selected as input for background music, music is muted only to
the zone selected. An amplified signal is required at this input if using 70V speakers.
NOTE:
When you want to mute the background music only to the zone in which you are paging, use 2, 3 or 4.
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7. Background Music