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2. RX + AUX. In this position, both the RECEIVE
and AUXILIARY audio are mixed and routed to
the OUTPUT.
3. RX or AUX. In this position, the OUTPUT audio is
either RECEIVE or AUXILIARY audio. When the
RECEIVE audio is squelched (indicated by the
illumination of the SQUELCH LED on the front
panel), AUXILIARY audio is routed to the
OUTPUT. When RECEIVE audio is not squelched,
RECEIVE audio is routed to the OUTPUT.
Balanced Audio Output
When connecting to the XLR balanced OUTPUT, use
the pin out shown below. If the output is unbalanced,
either use the unbalanced phono connectors or wire
the balanced XLR output as shown below with pins 3
and 1 wired together. The OUTPUT audio has a
nominal output level of 0dBu.
XLR pin out diagram for a balanced connection:
Pin 2 +
Pin 3 –
Pin 1 Shield
XLR pin out diagram for a
unbalanced connection:
Pin 2 +
Pin 1 and 3 –
LINE/MIC Switch
This switch reduces the OUTPUT level of the balanced
OUTPUT audio only. It does not affect the OUTPUT
level of the unbalanced audio. The OUTPUT audio is
reduced by 40dB to microphone level when this
switch is selected to MIC.
AUXILIARY Input
The LR-100 has an AUXILIARY input that allows for
greater functionality of the unit for a variety of
applications. The AUXILIARY input consists of a
balanced input, combination connector (female XLR
and 1/4 in) and two unbalanced phono connectors. All
of these inputs are actively mixed together. Thus, any
combination of input sources can be used. Input level
is adjusted via the front panel trim pot labeled AUX
LEVEL ADJUST. Adjust this level to fit the needs of
your installation ensuring the last red LED on the VU
meter is not illuminated (indicating peak audio).
AUXILIARY Balanced Audio Input:
The nominal input level for the balanced input is 0dBu.
Female XLR / ¼ in combination connector pin outs:
Pin 2 (tip) +
Pin 3 (ring) –
Pin 1 (sleeve) Shield
1
2
3
-
+
1
2
3
-
+
1
2
3
-
+
1
2
3
-
+
Preparing the LR-100 For Use
Unbalanced Audio Output
There are two unbalanced phono audio OUTPUT
connectors. The nominal OUTPUT audio level is
–10dBu.
AUXILIARY Unbalanced Audio Input:
The nominal input level for the two unbalanced inputs
is -10dBu.
Female XLR / ¼ in combination connector pin outs:
Pin 2 (tip) +
Pin 1 and 3 ring/sleeve
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