P81537 G
Sheet 2 of 5
UP TO 150 SPEAKER AMPLIFIERS
T-IN
R-IN
PRM-150
R-OUT
T-OUT
AUDIO
PAGE
PORT
600 (OHM)
EKSU
OR
PABX
GND -24V
T
R
GND -24V
GND -24V
Figure 2.
One-way paging with a PRM-150 connected directly to a 600 OHM CO or page port. If the telephone system provides one or more
600 OHM page ports, then a PRM-150 is required for each port.
UP TO 150 SPEAKER
T-IN
R-IN
PRM-150
R-OUT
T-OUT
UNUSED
C.O.
PORT
EKSU
OR
PABX
T
R
GND -24V
GND -24V
GND -24V
GND -24V
T-OUT
R-OUT
PRM-150
R-IN
T-IN
GND -24V
GND -24V
T-OUT
R-OUT
PRM-150
R-IN
T-IN
AMPLIFIERS PER ZONE
ZONE CONTROL
ZC-3
WHEELOCK
ZONE 2
ZONE 1
ZONE 3
R
T
Figure 3.
One-way paging with a Wheelock ZC-3 Zone Control. When connecting over 10 amplified speakers to the ZC-3, it may be necessary
to connect Wheelock PRM-150 line preamplifiers to the zone outputs. Depending upon system configuration (i.e., quantity of
speakers, length of wire runs, and audio output level of the host telephone system), it may also be necessary to use PRM-150's with
less than 10 amplified speakers. 24VDC connection (not shown) is required for each PRM-150, and the ZC-3.
UP TO 150 SPEAKER AMPLIFIERS
T-IN
R-IN
PRM-150
R-OUT
T-OUT
UNUSED
C.O.
PORT
EKSU
OR
PABX
GND -24V
R
T
GND -24V
GND -24V
SPARE
(-)
(+)
RPS-2406
POWER
SUPPLY
Figure 4.
One-way single zone paging from an unused CO port. This application is used only when external talk battery is required, otherwise,
use Figure 2.
