Mackie Onyx 820i Quick Start Manual page 15

FIREWIRE CONNECTIONS
Two FireWire connectors allow the transfer of
digital audio to and from your computer or digital audio
workstation (DAW). There are two identical connectors,
but you only need one. The other is used for
connecting additional devices if your mixer is using up
your computer's only FireWire connector. For example,
you could daisy-chain multiple Onyx 820i mixers or add
an external hard drive since the FireWire connectors
are run in serial. Performance will vary based on system
hardware.
The FireWire interface provides the following outputs
to your computer:
• Individual channels, tapped pre-fader, and
either pre-EQ, or post-EQ (your choice).
• Aux send 1 and 2 (a copy of the fi nal aux
outputs to your stage monitors or processors).
FireWire outputs 5 and 6 can either be from
channels 5 and 6, or aux send 1 and 2.
• Left/right main mix. The left/right main mix
at the FireWire output is not affected by the
main mix level control (important for recording
live). FireWire outputs 7 and 8 can either be
from channels 7 and 8, or main mix L and R.
Use FireWire to record a live performance directly to
your computer, then mixdown to a stereo mix later. Or
you can use it to turn your Onyx mixer into a
high-quality computer audio interface for your DAW.
FireWire also provides a return for two channels from
your computer to your mixer:
• These can be routed through the control
room/phones via the FW 1-2 button, to monitor
the computer audio through your control room
speakers or headphones (or through the main
speakers if assign to main mix is selected).
• These same two channels can also be routed
through channels 7 and 8, and treated just
like any other channel, with adjustment for
gain, EQ, level, and pan, as well as to solo, and
add to the main mix and aux send 1 and 2.
This routing is done using the FW/line input
selector switch on channels 7 and 8.
FIREWIRE PRE/POST
The FireWire output from each channel can be tapped
before (pre) or after (post) the channel EQ. The output
is pre-fader. If you want the mixer EQ to affect the
FireWire recording, then set this switch to post. This is
useful in recording channels live, where the recording
includes your careful channel EQ settings. If you want
to record the straight signals now and EQ them later in
your DAW, then set this to switch to pre.
The following FireWire modifi cations can be done by
an authorized service center. Authorized service centers
may be found online at:
www.mackie.com/scripts/service_centers/search.asp
Please contact our technical support department if you
are having trouble fi nding an authorized service center
in your area.
Modifi cations: Post-Insert FireWire Sends
The pre-EQ channel FireWire sends are pre-insert,
but the circuit boards can be modifi ed so that they are
post-insert instead. This allows for the use of an
external processor on the mic signal, sending the result
to the FireWire, while still pre-EQ.
Modifi cations: Post-Fader FireWire Sends
The post-EQ channel FireWire sends are pre-fader,
but the circuit boards can be modifi ed so that they are
post-fader instead. This allows the channel level to
control the level of the FireWire sends.
FIREWIRE
POWER
ON
FireWire Connections
1 2 3-4
L
INSERT INSERT
(MONO)
BAL/UNBAL
1 2
R
LINE LINE
BAL/UNBAL BAL/UNBAL
LINE LINE + 4dB
LINE
HI-Z HI-Z -10dB
48V 48V 48V
30 30
30
U U
20 40 20 40 20 40 MIC
GAIN GAIN GAIN
FW Pre
U 60 U 60
U 60
- 20dB 40dB - 20dB 40dB -
+ +
or Post SEND SEND SEND
PRE PRE PRE
POST POST POST
EQ EQ EQ
U U U
HIGH HIGH HIGH
12kHz 12kHz 12kHz
-15 + 15 -15 + 15 -15 + 15
1k 1k U
HIGH
MID
FREQ FREQ
2.5KHz
100 8k 100 8k
-15 + 15
U U U
LOW
MID MID MID
400Hz
-15 + 15 -15 + 15 -15 + 15
U U U
LOW LOW LOW
80Hz 80Hz 80Hz
-15 + 15 -15 + 15 -15 + 15
AUX AUX AUX
1 1 1
O O MAX O O MAX O O MAX
2 2 2
O O MAX O O MAX O O MAX
PAN PAN PAN
L R L R L R
MUTE MUTE MUTE
OL OL OL
ALT 3-4 ALT 3-4 ALT 3-4
- 20 - 20 - 20
U U U
O O +10dB O O +10dB O O +10dB
LEVEL LEVEL LEVEL
SOLO SOLO SOLO
1 2
3-4
Quick Start Guide
MAIN OUT CTRL - RM OUT
BAL/UNBAL
BALANCED
R L
R L
ALT 3-4 OUT
BAL/UNBAL
L/3
R/4
+
MAIN OUTPUT 4dB
MIC
LEVEL
AUX SEND AUX RETURN MAIN OUT TAPE
BAL/UNBAL 1 BAL/UNBAL 2 BAL/UNBAL
IN OUT
1 L L
L
(MONO)
2 R R
R
LINE IN 5-6 LINE IN 7-8
L L
(MONO) (MONO)
BAL/UNBAL BAL/UNBAL
R R
PREMIUM ANALOG MIXER
w/ PERKINS EQ & FIREWIRE
CTRL ROOM/PHONES
U U
SOURCE
0dB=0dBu
GAIN GAIN L R
20 CLIP
20dB 20dB - 20dB 20dB
+ +
MAIN MIX 15
SEND SEND INPUT
10
PRE
6
POST
LINE TAPE
3
EQ FW 1-2
U U
0
HIGH HIGH
FW 1-2 ALT 3-4
2
12kHz 12kHz
LEVEL
-15 + 15 -15 + 15 4 SET
7
U U
10
ASSIGN TO
MAIN MIX
MID MID 20
2.5kHz 2.5kHz
30
-15 + 15 -15 + 15
O O MAX O O MAX
RUDE
CONTROL PHONES
U U SOLO
ROOM
LOW LOW
80Hz 80Hz
AUX MASTER
-15 + 15 -15 + 15
SEND RETURN
AUX AUX
1 1 1 1
PRE
O O MAX O O MAX O O 15 O O 10
POST + +
RTN TO
AUX1
2 2 2 2
PRE
O O MAX O O MAX O O + 15 O O + 10
POST
PAN PAN
AUX SEND 1-2
TO FW 5-6
POWER
L R L R
MUTE MUTE
OL OL
ASSIGN TO
ALT 3-4 ALT 3-4 FW 7-8
MAX
O O
- 20 - 20
MIC LEVEL
U U U
DESTINATION
O O +10dB O O +10dB O O +10dB
AUX 1-2
PHONES
LEVEL LEVEL
SOLO SOLO
5-6 7-8
TALKBACK MAIN MIX
Line/FW 1-2
FW 1-2
Assign to
main mix
Aux send 1-2
to FW 5-6
Assign to
FW 7-8
15