Specifications

3
SCM820 Description
Front Panel
① Channel Mode Selection
Press the button to select the function of the channel knobs and monitor
LED rings. See the Audio Signal Adjustment section for details on each
mode.
② Assignable Channel Knob
Adjusts settings and status for each input:
Rotate: Adjusts a setting.
Momentary Press: Solos the channel to the headphone output.
Press and Hold: Mutes the audio or bypasses the EQ setting.
③ Monitor LED Ring
13 LED segments display gain setting, input signal meter, IntelliMix gain
meter, channel solo, or EQ setting.
④ Channel Status LED
LED Channel Status
Off Channel is closed (attenuated in the automix).
Green Channel is open (selected in the automix).
Amber Channel EQ is bypassed.
Flicker Red
Signal is clipping. Set the channel to a lower input
gain level.
Solid Red Channel is muted.
⑤ Auxiliary Input Jack (1/8")
Unbalanced aux input sums left and right channels to mono. Front and
back panel aux inputs are summed to a mono signal and routed without
automixing to the mix outputs.
⑥ Master Output Knob
Adjusts settings and status of the mix outputs. See Front Panel Modes for
details.
Rotate: Adjusts output gain or limiter threshold.
Momentary Press: Overrides a soloed channel to return the mix to the
headphone output.
Press and Hold: Mutes the audio or bypasses the limiter.
⑦ Master LED Ring
Displays gain setting or limiter threshold. A single LED represents each
mixer when they are both selected but set to different levels.
⑧ Master Mode Selection
Selects the function (gain or limiter) of the master knob and LED ring.
⑨ Mix Select Button
Selects Mix A, Mix B, or both for adjustment with the master knob and
monitoring on the LED ring and headphone output. Note: When both Mix
A and Mix B are selected, the headphone output only monitors Mix A.
⑩ Mix Status Indicator
LED Mix Status
Green
Mix is selected for adjustment and listening on the
headphone output.
Amber Limiter is bypassed.
Red Mix is muted.
⑪ Audio Output Meters
Monitor the output signal level and limiter threshold for mix A and B.
⑫
LIM (Limiter) LEDs
Illuminate amber when the audio levels exceed the limiter threshold.
⑬ System Status Indicators
The LEDs illuminate to indicate system settings:
LED Color Status
power Green Unit is powered on.
ethernet Green Unit is connected to a network.
network audio
Green
All connected receive channels
are OK (receiving digital audio as
expected).
Flashing Green
One or more connected receive
channels experiencing a
subscription error or is unresolved
(transmitting device is off,
disconnected, renamed or has
incorrect network setting).
Red Clock synchronization problem.
Off
No receive channels connected
(routing has not been established).
automix link
Green
Two or more mixers are connected
in a link group.
Flashing Green Link Group is configuring.
Off Mixer is in standalone mode.
dual mixer
Green Mixer is set to Dual Mixer operation.
Off
Mixer is set to Single Mixer
operation.
lockout
Red Front panel controls are locked.
Flashing Red
An adjustment is attempted in
lockout mode.
⑭ Headphone Volume Knob
Adjust the volume of the headphone output.
⑮ Headphone Output Jack (1/4 in.)
Monitor a mix or a soloed channel.
AUX IN
MASTER
lockout
power
ethernet
network audio
automix link
dual mixer
LIM
A
B
-9
-18
-24
-36
-48
-60
0
gain
limiter
L+R SUM
gain
low cut
hi shelf
meter
push to solo | hold to mute
1 2 3 4 5 6 7 8
A B
HEADPHONE
⑭
⑮
②
③ ⑦
⑤
⑥
⑨
⑬
⑧
⑩
⑪
④
①
IntelliMix
SCM820
®
⑫