Microphones - Mackie Onyx 820i Quick Start Manual

Microphones

Connect your microphones to the female XLR
connectors on channels 1, 2, and 3-4. The microphone
preamps feature our Onyx design, with super high
fi delity and headroom. Professional ribbon, dynamic,
and condenser mics all sound excellent through these
inputs.
Microphone-level signals are passed through the
mixer's splendid microphone preamplifi ers to become
line-level signals. The mic input of hybrid channels 3-4
is fed equally to channels 3 and 4.
48V PHANTOM POWER
Press the 48V phantom power switch if your microphones
need it.
Most modern professional condenser mics require 48V
phantom power, which lets the mixer send low-current
DC voltage to the mic's electronics through the same
wires that carry audio.
Never plug single-ended (unbalanced) micro phones,
or ribbon mics into the mic input jacks if phantom
power is on. Do not plug instrument outputs into the
mic XLR input jacks with phantom power on, unless you
are certain it is safe to do so.
LOW CUT
The mono and hybrid channels each have a low-cut
switch (often referred to as a high-pass fi lter) that
cuts bass frequencies below 75 Hz. This will reduce the
thumps and bangs due to stage noise and rumble, and
mic handling.
We recommend that you use low-cut on every
microphone application except kick drum, bass guitar,
or bassy synth patches.
Using the low cut switch also allows you to add some
bass EQ to your vocals without boosting the really-low
lows.
VOCAL EQUALIZATION
Mono channels 1 and 2 have a 3-band EQ, with
shelving-low, shelving-high and peaking-mid. The
frequency of the mid can be adjusted from 100 Hz to
8 kHz.
This extra detail in the mid EQ section is ideal for
vocal equalization, so you might consider using
channels 1 and 2 for your main vocal mics. Channel 3-4
has a 4 band EQ, with a high-mid and low-mid control.
INSERTS
Channels 1 and 2 have insert jacks that allow you to
send the mic and line signals out to an external device,
and back in again on the same connector. For example,
vocals benefi t from having an external vocal compressor.
These compress the level of the signals when they reach
a certain threshold, and help prevent overloading.
SETTING THE MICROPHONE GAIN
1. Press the solo switch at the bottom of the
channel your microphone is connected to. The
rude solo light will fl ash to remind you that
what you are listening to in the control room
and headphones, and shown on the main right
meter is the soloed channel.
2. Sing/talk/shout/scream into the microphone at
typical loudness levels.
3. Adjust the channel gain control until the right
main meter level is hovering around the 0 dB
mark (labeled "level set").
4. Now that the gain is set correctly, disengage
solo.
XLR Mic Inputs
1 2
Inserts
INSERT INSERT
Low Cut
1 2
LINE LINE
BAL/UNBAL BAL/UNBAL
LINE LINE
HI-Z HI-Z
48V 48V 48V
30 30
U U
20 40 20 40 20
GAIN GAIN
U 60 U 60 U
Gain
- 20dB 40dB - 20dB 40dB
+ +
SEND SEND
PRE PRE
POST POST
EQ EQ
U U
HIGH HIGH
12kHz 12kHz
-15 15 -15 15
+ +
1k 1k
FREQ FREQ
EQ
100 8k 100 8k
U U
MID MID
-15 15 -15 15
+ +
U U
LOW LOW
80Hz 80Hz
-15 + 15 -15 + 15
AUX AUX
1 1
O O MAX O O MAX
2 2
MAX MAX
O O O O
PAN PAN
L R L R
MUTE MUTE
OL OL
ALT 3-4 ALT 3-4
- 20 - 20
U U
O O +10dB O O +10dB
LEVEL LEVEL
Solo
SOLO SOLO
1 2
Quick Start Guide
3-4 AUX SEND AUX RETURN MAIN OUT TAPE
BAL/UNBAL BAL/UNBAL BAL/UNBAL
1 2
IN
L
1 L L
(MONO)
2 R R
R
L
(MONO)
LINE IN 5-6 LINE IN 7-8
BAL/UNBAL
R L L
(MONO) (MONO)
BAL/UNBAL BAL/UNBAL
+ 4dB
LINE
-10dB
R R
48V
PREMIUM ANALOG MIXER w/ PERKINS EQ & FIREWIRE
CTRL ROOM/PHONES
30
U U
SOURCE 0dB=0dBu
40 MIC
GAIN GAIN GAIN L R
20
60
- 20dB + 20dB - 20dB 20dB
+
MAIN MIX
15
SEND INPUT
SEND SEND
10
PRE PRE
6
POST POST
LINE TAPE
3
EQ EQ FW 1-2
U U U
0
HIGH HIGH HIGH
FW 1-2 ALT 3-4
2
12kHz 12kHz 12kHz
-15 15 -15 15 -15 15
+ + + 4
U
7
HIGH
MID
U U 10
ASSIGN TO
2.5KHz
MAIN MIX
-15 + 15 MID MID 20
U
2.5kHz 2.5kHz
30
LOW
-15 + 15 -15 + 15
MID
400Hz
O O MAX O O MAX
-15 15 RUDE
+
CONTROL PHONES
U U U SOLO
ROOM
LOW LOW LOW
80Hz 80Hz 80Hz
AUX MASTER
-15 + 15 -15 + 15 -15 + 15
SEND RETURN
AUX AUX AUX
1 1 1 1
PRE
O O MAX O O MAX O O MAX O O + 15 O O + 10
POST RTN TO
AUX1
2 2 2 2
PRE
MAX MAX MAX 15 10
O O O O O O O O + O O +
POST
PAN PAN PAN
AUX SEND 1-2
TO FW 5-6
POWER
L R L R L R
MUTE MUTE MUTE
OL OL OL
ASSIGN TO
ALT 3-4 ALT 3-4 ALT 3-4
FW 7-8
O O MAX
- 20 - 20 - 20
MIC LEVEL
U U U U
DESTINATION
O O +10dB O O +10dB O O +10dB O O +10dB
AUX 1-2
PHONES
LEVEL LEVEL LEVEL
SOLO SOLO
SOLO
3-4 5-6 7-8
TALKBACK MAIN MIX
OUT
CLIP
LEVEL
SET
Level
Set
1
2
7