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Intelix VC Series Mic/Line Mixer User Manual
7.3 DC Control
VC Series mixers are configurable for external control of individual channel volume by a DC
voltage. Up to 4 input channels and the master output volume can be connected to remote
controls simultaneously.
Note: The following instructions assume that the remote control device is a 10K
ometer. If another device is used, these instructions may require modification.
7.3.1 Remote volume control
When a remote control device (typically a linear 10k pot) is installed, it controls the percent-
age of the volume possible as defined by the Volume Control Knob on the front panel for that
channel. For example, if the Volume Control Knob is set at 8, and the remote pot is set at 5,
the result will be 4 (50% of 8). Only when the Volume Control Knob is set at 10 does the
remote device have full control over the channel's input level.
7.3.2 Connecting a remote volume control
The following instructions show how to connect a linear 10k pot to a single channel as a
remote volume control. Repeat this process for each channel to be remotely controlled.
1) Remove the channel's jumper from header P12.
2) Connect a wire between one end of the potentiom-
eter and the channel's high pin on the DB25 connector.
3) Connect a wire between the other end of the potenti-
ometer and a ground pin on the DB25 connector.
4) Connect a wire from the wiper of the potentiometer
and the channel's wiper pin on the DB25 connector.
7.3.3 Remote mute control
All channels whose high and wiper pins are brought out to the DB25 connector can be re-
motely muted.
This is done by connecting a switch (or other dry contact closure) between the channel's
wiper pin and ground. Shown are two ways to wire a channel for external muting. Note that
remote mute control can be used alone or in combination with remote volume control.
7.3.3.1Wiring an external mute switch
The following instructions show how to connect a single channel for remote muting. Repeat
this process for each channel to be remotely muted.
intelix
potenti-
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