T
R
+
-
T
R
+
-
T
R
+
-
T
R
+
-
Typical Connections
Buffered branch with BUFEX
volume control (24V supply for
this branch not shown)
Output Terminals
The Tip (T) and Ring (R) con-
nections are transformer-iso-
lated audio outputs with an
output impedance of 8
Ω
.
Connect these to the audio
inputs of the amplified speak-
ers for driving up to
1
50
speaker inputs.
100V
J1
70V
J2
25V
J3
T&R
J4
INPUT
SIGNAL
TYPE
Input Terminals
The input terminals can receive
dry audio (Tip and Ring), as
well as
1
00V, 70V, and 25V
speaker signals depending on
the input voltage type jumper
setting.
Existing branch that needs buffer-
ing or audio to area requiring
local volume control (24V supply
for this branch not shown).
24V DC Terminals
The BUFEX power consumption is
1
CU (50 mA) @ 24V DC.Terminals
are marked "+" and "-", but will func-
tion properly even if polarity connec-
tions are reversed.
24V
Power
Supply
