18
Onyx 1640i
Talkback
The mixer's built-in microphone allows you to talk to
the band through the phones outputs or stage monitors.
This can often be charming and enlightening.
TALKBACK MIC
The omni-directional dynamic microphone will pick
up your voice from anywhere in front of the mixer. Any
hint of exasperation and despair in your voice will be
faithfully picked up.
TALKBACK Switch
Press this switch in to talk. This is a momentary
switch, and as long as you hold it in, talkback is
activated.
If phones is chosen as your talkback destination, the
control room outputs are attenuated (ducked) to allow
your voice to come through clearly.
TALKBACK LEVEL
Use the talkback level knob to control the level of the
signal from the internal microphone.
1. Start with this level turned down.
2. Select the destination: headphones and/or aux
1-6, and make sure the phones level or aux send
master levels are set up nicely.
3. Press the talkback switch as you talk.
4. Slowly turn the talkback level knob up until
they can hear you in phones or monitors.
5. Release the talkback switch when you are
fi nished talking.
Once you have set the level, you can leave it there for
the duration of the session or gig.
DESTINATION: PHONES, AUX 1-6
Push in the phones talkback destination switch to
communicate with the talent in the studio through the
headphones during a recording session.
The aux 1-6 talkback destination switch routes the
talkback signal to the aux send 1-6 outputs. Use this to
communicate with the musicians through their stage
monitors when you are setting up a live performance.
In a studio, an aux out could be fed to the input of a
headphone amplifi er feeding several sets of headphones.
It is fi ne to have both talkback destination switches
pushed in at the same time. If you don’t have either
switch pushed in, the talkback signal won’t go
anywhere.
EXTERNAL MIC Switch
Should the internal talkback mic not be to your liking,
feel free to utilize an external mic of your choice. Be
sure to push this switch down to engage the external
mic. At this point, the built-in mic is disconnected.
Next to the external mic switch is an indicating LED
to let you easily spot when the external mic function is
in effect. 48V phantom power is not available, so be sure
to use a dynamic or ribbon microphone when utilizing
the external mic function.
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
SOLO
MUTE
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
PREMIUM ANALOG MIXER w/ PERKINS EQ & FIREWIRE
SUB
ASSIGN
MAIN
MIX
1-2
3-4
dB
30
20
10
40
50
5
5
U
60
10
O
O
5
GAIN
CR/PHONES
ONLY
SUBS
1-2
3-4
SEND
TO
4
CONTROL
ROOM
PHONES
MAIN MIX
L
R
SUB ASSIGN
MAIN MIX
L
R
MAIN MIX
L
R
MAIN MIX
L
R
TO AUX 5
MAIN
SUBS
TO AUX 6
SENDS
RETURNS
PRE
POST
PRE
POST
PRE
POST
PRE
POST
PRE
POST
PRE
POST
EFX TO
MON
RUDE
SOLO
20
15
10
6
3
0
2
4
7
10
20
30
SUB 3-4
FW 1-2
SUB 1-2
TAPE
ASSIGN TO
MAIN MIX
MAIN MIX
LEVEL
SET
CLIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MAIN
MIX
SUB1
SUB4
SUB3
SUB2
SUB1
SUB4
SUB3
SUB2
4
3
2
2
1
1
6
4
2
1
5
6
3
PAN
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
AUX
12V 0.5A
LAMP
CTRL ROOM/PHONES
SOURCE
ASSIGN TO
FW 15-16
LEVEL
MIC
EXTERNAL
MIC
LINE
FW 1
LINE
FW 2
LINE
FW 16
LINE
FW 15
LINE
FW 14
LINE
FW 13
LINE
FW 12
LINE
FW 11
LINE
FW 10
LINE
FW 9
LINE
FW 8
LINE
FW 7
LINE
FW 6
LINE
FW 5
LINE
FW 4
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
75Hz
18dB/OCT
LINE
FW 3
DESTINATION
AUX MASTER
SENDS 1-6
TO FW 9-14
TALKBACK
PHONES
AUX 1-6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
+
15
O
O
+
15
O
O
+
15
O
O
+
10
O
O
+
10
O
O
+
10
O
O
+
10
O
O
+
10
O
O
+
10
O
O
+
15
O
O
+
15
O
O
+
15
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUBS 1-4
TO FW 5-8
SOLO
LEVEL
PFL
AFL
TAPE TO
MAIN MIX
TAPE IN
MAX
O
O
MAX
O
O
SOLO
MODE
L
R
0dB=0dBu
POWER
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OL
+
10
0
-
20
SUB
ASSIGN
MAIN
MIX
1-2
3-4
GAIN
4
2
1
5
6
3
3
PAN
HIGH
12kHz
LOW
80Hz
U
+15
-15
U
+15
-15
U
+15
-15
U
+15
-15
8k
400
2k
2k
100
400
HIGH
MID
FREQ
LOW
MID
FREQ
+
40dB
U
-20dB
U
20
30
40
60
L
R
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
MAX
O
O
SEND
PRE
POST
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OL
+
10
0
-
20
AUX MASTERS
R
1
2
3
1
2
3
4
5
6
L
4
MAIN MIX
A LT E R N AT E F I R E W I R E A S S I G N M E N T S
SUBGROUPS
TALKBACK
RECORDING OUTS
POST GAIN PRE INSERT
BALANCED
1-8
9-16
O
O
+6
SUB OUT
FIREWIRE
CTRL-RM OUT
TAPE
MAIN INSERT
IN
OUT
AUX SEND
AUX RETURN
3
3
R
L
MONO
R
R
L
R
L
R
L
R
L
R
L
1
4
2
5
1
2
4
3
1
6
4
2
(MONO)
R
L
(MONO)
(MONO)
(MONO)
R
L
MAIN OUT
POWER
ON
(TIP=SEND
RING=RTN)
BAL/UNBAL
BAL/UNBAL
BALANCED
MIC
+48v
HI-Z
L
BAL/UNBAL
MIC
+4dB
MAIN OUTPUT
LEVEL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
1
INSERT
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
ON
YX MIC PR
E
HI-Z
BAL/UNBAL
INSERT
ON
YX MIC PR
E
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
LINE
BAL/UNBAL
INSERT
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
ON
YX MIC PR
E
Aux Sends
Headphones
LEVEL
MIC
EXTERNAL
MIC
DESTINATION
TALKBACK
PHONES
AUX 1-6
MAX
O
O
Destination
Talkback
Switch
Talkback
Level
External
Mic Switch
Built-in
Microphone
