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Intelix VC Series Mic/Line Mixer User Manual
7.4.3 Other ducking techniques
7.4.3.1 Remote (manual) ducking
The ducking circuitry can be activated with an external switch, so that even if no signal is
present on any of the high priority channels, low priority channels will be ducked when the
switch is depressed.
To install a remote ducking switch, follow these directions:
1) Connect a wire from one side of any dry contact closure device (switch) to pin 11
of the DB25 connector.
2) Connect a wire from the other end of the switch to a ground pin of the DB25
connector.
You should now have the con-
figuration shown below (the
drawing shows a linked duck
chain as explained below).
The switch will now duck all low
priority channels when closed.
Remote group muting can be
accomplished with this switch.
Set the duck amount to -100 dB.
All low priority channels will now
be muted when the remote duck
switch is closed.
7.4.3.2 Linked ducking
Linked ducking is a method of chaining together the ducking circuitry from several mixers.
The result of this chaining is that any time any high priority channel from any mixer in the
chain becomes active, all duckable channels in the chain are ducked. This makes it possible to
duck low priority channels from another mixer. A council room with 10 high priority channels
and 10 low priority channels can be set up so that any high priority channel (arrayed across
multiple mixers) can all duck the low priority channels (also spanning multiple mixers). To
chain the mixers, connect the DB-25 connector pin 11 (manual duck switch) and any ground
pin (pins 14-20, 22, 24, 25) of one mixer to the same pins of the next mixer; i.e. connect all
pin 11's and tie grounds together as shown in the drawing above. If you do not need manual
ducking in the chain, omit the switch. For DB-25 pinouts see Section 7.1. Up to 12 mixers
can be chained in this way.
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