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22 Onyx 820i
35. –20 and OL LEDs
These LEDs indicate the channel’s signal level after
the gain and EQ controls, but just before the channel’s
level. So even if the level is turned down, you can see if
a signal is present, or if the channel is being overloaded.
The OL (overload) LED will come on when the
channel’s input signal is too high. This should be
avoided, as distortion will occur. If the OL LED comes
on regularly, check that the gain control [23] is set
correctly for your input device, and that the channel EQ
is not set with too much boost.
The –20 LED comes on when the channel signal
strength has reached that level.
36. LEVEL
This is the last control in a channel’s signal path, and
it adjusts the level of each channel onto the main mix.
The “U” mark indicates unity gain, meaning no increase
or decrease of signal level. All the way up provides an
additional 10 dB, should you need to boost a section of
a song. If you fi nd that the overall level is too quiet or
too loud with the level near unity, check that the gain
control [23] is set correctly.
37. SOLO
Whenever a solo switch is engaged, you will only hear
the soloed channel(s) in the headphones and control
room. This gives you the opportunity to audition the
channels before they are added to the main mix or alt
3–4 mix. You can still hear, even when the level is down.
Solo is also used to set the gain of each channel
correctly. When a channel is soloed, you can adjust the
channel gain [23] until your input source reaches the
level of the 0 dB LED of the right meter.
Solo signals reaching the headphones and
control room are not affected by the channel
level or main level; therefore, turn down the
phones level [42] and control room level [41] fi rst, as
soloed channels may be loud.
The rude solo light [44] will turn on as a reminder
that what you are listening to in the headphones and
control room is just the soloed channel(s).
For stereo channels, the mono sum of the left and
right is soloed.
Soloed channels are sent to the source mix, which
ultimately feeds your control room, phones, and meters.
Whenever solo is engaged, all source selections (main
mix, alt 3-4, tape, and FireWire) are defeated, to allow
the soloed signal to do just that—solo!
Dear Betty,
All this talk of solo reminded me of how happy we
could be together. Let us be married this afternoon, in
the bass amp section of the guitar store where we met!
No longer will I be that guy at the company party who
talks about EQ all evening. No longer will I spend my
time in music stores telling everyone that "I wrote the
manual for that!" Let me be your main mix!
MUTE
SOLO
48V
MUTE
SOLO
48V
MUTE
SOLO
48V
LINE
MUTE
SOLO
MUTE
SOLO
PAN
2
1
MID
FREQ
MID
FREQ
BAL/UNBAL BAL/UNBAL
ALT 3-4 ALT 3-4 ALT 3-4 ALT 3-4 ALT 3-4
LOW
MID
400Hz
O
N
Y
X
M
I
C
P
R
E
HIGH
12kHz
LOW
80Hz
EQ
INSERT INSERT
O
N
Y
X
M
I
C
P
R
E
HIGH
12kHz
LOW
80Hz
EQ
O
N
Y
X
M
I
C
P
R
E
HIGH
12kHz
HIGH
MID
2.5KHz
LOW
80Hz
EQ EQ
(MONO)
L
R
L
(MONO)
R
BAL/UNBAL
L
(MONO)
R
BAL/UNBAL
L
(MONO)
R
BAL/UNBAL
AUX RET
U
1
1
2
AUX SEND
MID
2.5kHz
LOW
80Hz
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
U
+15-15
HIGH
12kHz
MID
2.5kHz
LOW
80Hz
HIGH
12kHz
FW 1-2
LINE
HI
-
Z
LINE
-10dB
+
4dB
HI
-
Z
LINE
PRE
POST
PRE
POST
PRE
POST
PRE
POST
LEVELLEVELLEVEL LEVEL LEVEL
+10dB
OO
U
+10dB
OO
U
+10dB
OO
U
+10dB
OO
U
+10dB
OO
U
1 2 3-4
LINE IN 5-6 LINE IN 7-8
AUX
PAN
2
1
AUX
PAN
2
1
AUX
PAN
2
1
AUX
PAN
2
1
AUX
OL
- 20
OL
-
20
-
20
OLOL
-
20
OL
-
20
12
BAL/UNBAL BAL/UNBA
L
SEND SEND SEND SEND
SEND INPUT
3-4 5-6 7-8
GAIN
+20dB-20dB
U
GAIN
MIC
GAIN
GAIN
+20dB-20dB
U
U
20
30
40
60
+40dB
U
-20dB
U
20
30
40
60
GAIN
+40dB
U
-20dB
U
20
30
40
60
1
LINE
2
LINE
1k
100 8k
1k
100 8k
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
MAX
OO
LR LR LR LR LR
8
9
10
18
19
20
23
24
25
26
27
31
32
33
34
35
36
37
28
29
30
21
22
12
13