Operating The Mixer; Front Panel Modes; Audio Mute And Bypass; Monitoring - Shure SCM820 Digital IntelliMix Manual

Front Panel Modes

IntelliMix®
1
IntelliMix®
1 2 3 4 5
push to solo | hold to mute
For Channels 1-8
and Aux
Channel Inputs
The channel knobs operate in five modes for different types of input signal
adjustment and display. Use the front panel mode selection button to select
from the following modes.
Channel Gain ( )
gain
Adjust gain within a 128 dB range while displaying
the gain setting on the LED ring. Unity gain is at the
9th LED.
Low Cut ( )
low cut
Adjust the frequency of the low cut filter (6 dB/octave
from 25 to 320 Hz). Use to remove low-frequency
noise such as table vibrations or air-conditioning
rumble.
High Shelf ( )
hi shelf
Adjust the high shelf boost or cut (± 12 dB at 5
kHz). Use to add presence to muddy vocals, temper
sibilant vocals, or enhance the sound of off-axis
lavalier microphones.
Input Signal Meter ( )
ch. meter
LEDs display the input signal level in real-time.
Channel gain is adjustable in this mode, and will
momentarily display channel gain setting during
adjustments.
IntelliMix Gain Meter ( and
gain ch. meter
LEDs display the IntelliMix attenuation applied
in realtime. Channel gain is adjustable in this
mode, displaying the setting on the LEDs during
IntelliMix®
adjustments.
1
Mix Outputs
The mix output knob operates in two modes to control
the mix output. Use the master function button to select
one of two modes.
Output Gain ( )
gain
Rotate to adjust the output gain of the selected mix.
The output signal level is displayed on the meters.
Limiter Threshold ( )
limiter
Rotate to adjust the limiter threshold of the mix (−2
to −50 dBFS). The limiter threshold level is displayed
on the meters.

Audio Mute and Bypass

Mute Channel Input
Press and hold the input channel knob while in
channel status LED turns red.
Mute Mix Output
Press and hold the knob while in
MASTER
turns red.
Bypass Input EQ
Press and hold the input channel knob while in
channel status LED turns amber.
Bypass Output Limiter
Press and hold the knob while in
MASTER
LED turns amber.
gain

Operating the Mixer

low cut
gain
hi shelf
low cut
ch. meter
hi shelf
ch. meter
-∞ dB
-∞ dB
gain
low cut
2 3 4 hi shelf 5
SCM820
6 7 8
HEADPHONE ch. meter
92 Hz
gain
low cut gain For Mix
-∞ dB
Mode push to solo | hold to mute
92 Hz
low cut hi shelf
Outputs
ch. meter gain
hi shelf
Selector
low cut
ch. meter
hi shelf
-∞ dB
gain
ch. meter
low cut
25 Hz
hi shelf
92 Hz
ch. meter
25 Hz
gain
low cut
gain
hi shelf -∞ dB
low cut
ch. meter 92 Hz
hi shelf
gain
ch. meter
low cut +0 dB
25 Hz
hi shelf
gain
gain
ch. meter
-∞ dB +0 dB
low cut
low cut
hi shelf gain
hi shelf 92 Hz
low cut
ch. meter 25 Hz
ch. meter
gain
hi shelf
low cut
ch. meter
hi shelf
-12 dB
+0 dB
-∞ dB
ch. meter
gain
92 Hz
-12 dB
low cut
gain
hi shelf 25 Hz
low cut
+0 dB
ch. meter
hi shelf
gain
ch. meter
low cut
-12 dB
hi shelf 92 Hz
gain
ch. meter
25 Hz
gain
-16 dBFS
low cut
low cut
+0 dB
hi shelf
-12 dB
hi shelf gain
ch. meter gain -16 dBFS
low cut
ch. meter
low cut
hi shelf
hi shelf
25 Hz
ch. meter ch. meter
gain
-60 dBFS
-16 dBFS
+0 dB
low cut
gain
-12 dB
hi shelf
-60 dBFS
low cut
ch. meter
hi shelf
gain
-16 dBFS
ch. meter
low cut
-60 dBFS
+0 dB
hi shelf
ch. meter gain
-12 dB
-15 dB
low cut
gain
hi shelf
low cut
-60 dBFS -15 dB
ch. meter gain
-16 dBFS
gain
hi shelf
low cut
low cut
ch. meter
) hi shelf
-15 dB
-12 dB
hi shelf
ch. meter
gain
ch. meter
low cut
-80 dB
hi shelf gain
-60 dBFS -16 dBFS
ch. meter low cut -15 dB
-80 dB
hi shelf gain
low cut
ch. meter
-80 dB
hi shelf
2 3 4
ch. meter
gain
-16 dBFS
-60 dBFS
low cut
MASTER
-15 dB
hi shelf
-80 dB
gain
ch. meter
low cut
MASTER
+0 dB
hi shelf
MASTER
-60 dBFS
ch. meter
push to solo | hold to mute
+0 dB
-15 dB
+0 dB
gain gain
-80 dB
low cut
limiter
MASTER
hi shelf gain
ch. meter -∞ dB +18 dB gain
limiter
+0 dB
limiter
-15 dB
-∞ dB gain +18 dB
-80 dB
-∞ dB +18 dB
low cut
gain
hi shelf MASTER
MASTER
limiter
ch. meter
-24 dBFS
MASTER +0 dB
-∞ dB +18 dB
MASTER
-80 dB
-24 dBFS
-24 dBFS
MASTER
gain
limiter gain
MASTER
limiter
+0 dB
gain
-∞ dB -24 dBFS +18 dB
gain
limiter
-50 dBFS -2 dBFS
limiter
MASTER
gain
-50 dBFS -2 dBFS
-50 dBFS -2 dBFS
limiter
gain
MASTER
+0 dB
limiter
-∞ dB +18 dB
-24 dBFS
-50 dBFS -2 dBFS
gain
limiter
MASTER
gain
-∞ dB +18 dB
limiter
-24 dBFS
-50 dBFS -2 dBFS
or mode. The
gain ch. meter
MASTER
gain
limiter
-24 dBFS
-50 dBFS -2 dBFS
mode. The mix status LED
gain
gain
limiter
-50 dBFS -2 dBFS
or mode. The
low cut hi shelf
mode. The mix status
limiter
+0 dB
+0 dB

Monitoring

+18 dB
+18 dB Headphone Output
+0 dB
Use the front panel headphone jack for monitoring
audio. By default, the headphones monitor the mix pre-
+0 dB
fader/post-EQ (change to post-fader/post-limiter from
+18 dB
GUI > Preferences Tab).
Solo to Headphones
+18 dB +0 dB
A channel can be soloed to the headphone jack.
320 Hz
Solo Channel: Press a channel knob to solo that channel to the
320 Hz
headphones. The other LED rings dim to highlight the soloed channel.
+0 dB
+18 dB
Exit Solo: Press the soloed channel knob or press the
return the mix to the headphones.
320 Hz
+0 dB
+18 dB
320 Hz
Input Meters
+12 dB
+18 dB
The front panel channel meters can be set to display real-time signal
+12 dB
information. Use the front panel mode selection button to scroll to the
320 Hz
desired mode:
+12 dB
IntelliMix®
1
320 Hz
+12 dB
Input Signal Level
The channel meter mode (
320 Hz
0 dBFS
level for each channel.
+12 dB
0 dBFS
IntelliMix Gain
The IntelliMix meter mode (
0 dBFS
IntelliMix gain operation in real-time across the channel LEDs. Channels
+12 dB
that gate open will display more gain than channels that are closed
(attenuated) in the mix.
0 dBFS
+12 dB
0 dB
0 dBFS
Output Meters
0 dB
0 dB The output meters indicate the level of each mix
5 6 7
before the digital-to-analog conversion. By default,
0 dBFS
the meter displays average and peak audio levels.
0 dB
A B
It is good practice to use −18 dBFS on the SCM820
meter as an approximation of 0 VU on an analog
0 dBFS A B
A B
meter.
0 dB
LED
A B
Red (7)
0 dB
Yellow (6)
A B
A B
Yellow (5)
0 dB
A B
A B
Green (4)
A B
Green (3)
A B
Green (2)
A B
Green (1)
A B
A B
Changing the Metering Type
Go to the Preferences tab of the GUI to change the following metering
A B
options:
• Meter Type: Change the input and output meters from displaying VU +
Peak (default) to VU or Peak.
• IntelliMix Gain Metering: The Input tab of the GUI can display input
signal level (default) or IntelliMix gain metering in realtime.
Master
2 3 4 5 6 7 8
) displays real-time audio input signal
ch. meter
and illuminated) displays
gain ch. meter
8
Description Signal Level (dBFS)
Clip 0 to -6
-6 to -9
Normal peaks
-9 to -18
-18 to -24
-24 to -36
Signal Present
-36 to -48
-48 to -60
knob to
SCM
HEADPH
5