11
Selecting the Mixer Mode
Press the Mix A or Mix B button on the mixer back panel to scroll
through the five modes. From the IntelliMix tab of the GUI, you can
select a preset or configure the IntelliMix as a Custom setting.
Mixes A and B have the same IntelliMix settings when the
SCM820 is to Single Mixer Operation (default).
4
5
OUT
L R
mix a
mix b
AUX IN
+
7
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
8
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
6
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
3
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
2
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
1
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
lockout
line
A
A
B
B
manual
smooth
classic
extreme
custom
dual mixer
+0dB
mic
+30dB
mic
phm 48 VDC
CH
auto link
+46dB
reset
primary
secondary
CHANNEL
INTELLIMIX
00:0E:DD:AA:BB:CC
4
5
OUT
L R
mix a
mix b
AUX IN
+
7
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
8
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
6
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
3
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
2
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
1
+
gat
e
IN
mut
e
o
vr
d
gnd
+
direct out
lockout
line
A
A
B
B
manual
smooth
classic
extreme
custom
dual mixer
+0dB
mic
+30dB
mic
phm 48 VDC
CH
auto link
+46dB
reset
primary
secondary
CHANNEL
INTELLIMIX
00:0E:DD:AA:BB:CC
Single or Dual Mixer Operation
The mixer can be set to perform one or two automixes:
•
Single Mixer (default):
Channels are routed to a single mix bus
that sends the same audio to both Mix A and B outputs. Limiter
and master gain can still be set independently for both outputs.
•
Dual Mixer:
Two separate buses provide independent automixes
for each mix output. In this setting, two entirely different mixes can
result from the same set of inputs.
Enable dual mixer operation by pressing the Dual Mixer button on the
back panel or from
GUI > IntelliMix Tab
.
Example Dual Mixer Applications:
• Set Mix A to Classic mode for sound reinforcement, and set Mix B
to Smooth for a broadcast feed.
• Mix A to Classic mode for sound reinforcement, and Mix B for
Manual for recording.
• Route channels 1-4 to Mix A and 5-8 to Mix B to run independent
automixes for two different locations from one device.
Back Panel
Selecting the Mix Mode
Press to engage Dual Mixer
operation, illuminating the LED
GUI
Selecting the Mix Mode
Select Dual Mixer
operation
IntelliMix Parameters
Gating Style
Determines the way gain is applied to open channels.
Full
Channels open at full gain (as adjusted by the NOMA factor).
Relative
Channels open at a gain level that varies with the input signal level—
quieter signals receive less gain than loud signals. As the input signal
level increases, more gain is applied to the channel.
Gain Scaling
Determines off attenuation and its effect on the total system gain.
Fixed
Off attenuation is a fixed amount. Total system gain varies with the
number of open channels.
Adaptive
Off attenuation is adjusted to maintain a uniform system gain
comparable to that of a single open channel.
Off Attenuation
The amount of attenuation applied to closed channels.
Last Mic Lock On
Avoids ambient dropout by keeping at least one channel open at all times.
The last channel opened remains open until another takes its place.
Number of Open Microphones Attenuation (NOMA)
System gain is attenuated as additional channels are opened in a mix. This
is configured per doubling of open channels, adjustable from 1– 6 dB for
each mix that has Gain Scaling set to Fixed.
Maximum Number of Open Microphones (Max NOM)
Restricts the number of microphones that can be open at a time in a mix.
This is adjustable from 1 ("filibuster mode") to maximum (unlimited).
Hold Time
Determines the minimum amount of time that a channel is gated open.