+
_
+
_
70V
25V
8
COM
TEL
CONT
T
NIGHT
BELL
L
U
AMPLIFIER
COMMERCIAL
538C
LISTED
0.5A
60 Hz
120 VAC
MADE IN KOREA
AND RATING
SAME TYPE
BREAKER WITH
REPLACE CIRCUIT
CAUTION:
VOL
NIGHT BELL
R
TEL
GND
MUSIC
IN
70V
25V
8
COM
PUSH TO RESET
CIRCUIT BREAKER
LO-CUT
PEAK
LEVEL
VOL
PAGE
MUSIC
VOL
TONE
E15903
Page 7 of 8
All output wiring connections are made to the terminal strip located on the left side
of the LU
1
0WAMP.
IMPORTANT:
Before making any connections or wiring changes to the amplifier
or any equipment connected to the amplifier, make sure that the amplifier is NOT
plugged into an AC outlet.
NOTE:
The amplifier does not have a power switch, so it must be unplugged in
order to turn the power off.
Speaker Connection
70-volt speaker connections are made between the 70V and COM terminals on the
output terminal strip (see Figure 3). Use minimum 22 AWG shielded, twisted pair
cable. Connect the shield of the cable to the terminal strip.
NOTE:
The amplifier output terminal strip also includes terminals for 8-ohm and
25V speaker connections. These are provided for special applications and are
generally not used.
Figure 3: Speaker Connection, Output Wiring
Output Wiring
Enlarged view of
Ouput Terminal Strip
to PBX ground
