Lectrosonics R172 - Manual (Page 10)

MULTI-CHANNEL AUDIO MIXING
The R172 receiver offers a unique feature that eliminates the necessity of using an external audio mixer in
multi-channel applications. When using two R172 receivers together, the LINE LEVEL and AUX INPUTS jacks
provide "unity gain" mixing of the audio signals. This means that the audio output of the receivers may be mixed
together through these connectors without affecting the volume levels. Connect the LINE LEVEL jack of one
receiver to the AUDIO IN jack of the next receiver, then connect its LINE LEVEL jack to the AUX INPUTS jack of
the next receiver, forming a "chain" as shown in the illustration.
Two receivers may be interconnected in this manner so that a single audio output is available from the output of the
last receiver in the "chain".
The output level of the LINE LEVEL RCA jack is not affected by the OUTPUT LEVEL control. The OUTPUT
LEVEL control on the last receiver in the "chain" will control the combined volume of all the receiver outputs. In
order to control the receiver outputs independently, you will need to use an external microphone mixer without the
"jumper" cords shown below.
MIXING AN EXTERNAL TAPE DECK WITH RECEIVER OUTPUT
A tape player (or other audio source) may be connected to the AUDIO IN jack on the rear panel to mix the tape
player output with the receiver output. Adjust the volume of the tape player with the volume control on the tape
player since there is not a separate control for this purpose on the receiver. You may also record from the R172 by
connecting to the LINE LEVEL jacks on the rear panel.
9