Specifications

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Intellimix Tab
Mixer Settings
1) Mixer Type
The SCM820 can be set to operate as a single or dual mixer:
• Single Mixer: Channels are routed to a single mix bus that sends the
same audio to both Mix A and B outputs. This allows the same program
to be sent to different rooms or recording applications. The output gain,
parametric equalizer and limiter can be set separately for each mix.
• Dual Mixer: Two separate buses provide independent automixes for
each mix output. This allows two entirely different mixes to result from
the same set of inputs or enables the SCM820 to function as two
smaller independent mixers. This is useful when the mixer is being
used for two applications. For example, set Mix A to Classic mode for
sound reinforcement, and set Mix B to Smooth for a broadcast feed. As
a dual mixer, each channel can route to Mix A, Mix B, both or neither
mixes.
2) Mix Modes
The Mix Mode sets the IntelliMix configuration to determine the way the
channels are mixed to the master outputs. When an adjustment is made
to any IntelliMix preset, the mode automatically changes to Custom. See
Mixer Modes section for configuration details of each preset.
Press the mode button to highlight which channels are routed to that mix.
The color of the box around a channel correlates to the IntelliMix settings
of the mix output. To view the other mix’s settings, click on the mode for
that mix.
Note: When set to Single Mixer operation, Mixes A and B are the same.
3) Save
Saves current Custom IntelliMix settings as a file to your computer.
4) Load
Uploads a saved Custom IntelliMix settings file.
Channel Strip
5) Channel Name
Displays the channel name as defined in the Inputs Tab.
6) Routing
Routes the channel to the Mix A or Mix B output. The routing options
depend on the Mixer Type:
• Single Mixer Type: the channel can route to both or neither mixes.
• Dual Mixer Type: the channel can route to Mix A, Mix B, both, or
neither mixes.
7) Gating Logic
When the mixer is set to Dual Mixer operation, this setting determines
whether Mix A or Mix B controls the hardware functions (IntelliMix Direct
Output), indicators (Channel Status LEDs) and channel Logic pins.
8) Always On
The Always On setting forces a channel to stay open continuously in the
mix.
Note: A channel that is set to Always On still contributes to and is affected
by the IntelliMix. For example, NOMA still applies to Always On channels.
9) NAT (Noise Adaptive Threshold)
Select to engage the NAT, which continuously adjusts the gate threshold
for opening a channel. NAT is a core IntelliMix operating principle.
10) Offset
Sets the difference in dBs between the noise floor (determined by NAT)
and a signal level, above which will open a channel.
11) Threshold
When NAT is deactivated, this manually determines the noise level above
which a channel will gate open.
12) Chairperson
Override: When selected, it allows this channel to gate open regardless of
NOM setting (number of open microphones).
Mute: When selected, all other channels mute when this channel gates
open. There are two types of Chairperson Mute:
• Auto: Other channels automatically mute when the selected channel is
gated open.
• Manual: A Logic-wired button connected to the Override In Logic pin
controls the mute function applied to all other channels.
13) Gate Group
When any channel from the group is gated open, the rest of the group
automatically gates open. There is one Gate Group for each Link Group.
In Dual Mix mode, there is one gate group per Mix for each Link Group.
This is disabled when the Gating Style is set to Relative.
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