Microphones

Connect your microphones to the female XLR connectors on mono channels 1-4. The microphone preamps feature our Onyx design, with super high fidelity and headroom. Professional ribbon, dynamic, and condenser mics all sound excellent through these inputs.

Microphone-level signals are passed through these splendid microphone preamplifiers to become line-level signals.

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) microphones, 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

Mono channels 1-4 each have a low-cut switch (often referred to as a high-pass filter) 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.

EQUALIZATION

INSERTS

Channels 1-4 have insert jacks on the rear panel. These 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 benefit 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

The gain controls allow you to set your input signals to an optimum level: not so hot that the mixer is overloaded, and not so low that the signal is lost in noise. For a signal entering the XLR mic inputs, the adjustment range is from 0 to 60 dB. Use the following procedure for setting the gain just right:

1.Press the solo switch at the bottom of the channel your microphone is connected to. The rude solo light will flash 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.

5.During a performance, if you notice that the OL (overload) LED comes on next to the channel fader, carefully decrease the gain until OL no longer comes on.

 

 

 

 

( PRE-FADER / PRE EQ

TIP SEND / RING RETURN )

FIREWIRE

MAIN OUT

AUX SEND

 

CHANNEL INSERT

 

POWER

BALANCED

1

4

3

2

1

R

 

L

 

 

 

 

 

BAL/UNBAL

AUX RETURN

 

Inserts

 

2

R 2 L BAL/UNBAL R

1 L

 

MAIN OUTPUT

+4dB

 

 

 

LEVEL

MIC

 

 

 

Mono channels 1-4 have a 3-band EQ, with shelving- low, shelving-high and peaking-mid. The frequency of

XLR Mic

Inputs

 

 

1

 

 

2

 

 

3

 

 

4

CTRL - RM OUT

 

MAIN OUT

ALT 3-4 OUT

TAPE

 

 

 

 

 

 

 

 

 

 

 

 

BAL/UNBAL

 

 

BAL/UNBAL

BAL/UNBAL

 

L

YX

MIC

PRE

YX

MIC

PRE

YX

MIC

PRE

YX

MIC

PRE

 

 

 

 

 

 

ON

 

ON

 

ON

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

OUT

 

 

 

 

 

 

 

 

 

 

 

 

L

R

L

R

L/3

R/4

R

 

 

 

 

 

 

 

 

 

 

 

 

LINE IN 5-6

LINE IN 7-8

 

LINE IN 9-10

LINE IN 11-12

 

 

the mid can be adjusted from 100 Hz to 8 kHz.

This loving attention to detail in the mid EQ section is ideal for vocal equalization, so you might consider using channels 1 to 4 for your main vocal microphones.

Low Cut

48V

Gain

EQ

 

1

 

2

 

3

 

4

 

LINE

 

LINE

 

LINE

 

LINE

 

BAL/UNBAL

 

BAL/UNBAL

 

BAL/UNBAL

 

BAL/UNBAL

 

LINE

 

LINE

 

 

 

 

 

HI-Z

 

HI-Z

75Hz

 

75Hz

 

 

 

 

 

18dB/OCT

18dB/OCT

 

48V

 

48V

 

48V

 

48V

30

30

30

30

20 U

40

20 U

40

20 U

40

20 U

40

 

GAIN

 

GAIN

 

GAIN

 

GAIN

U

60

U

60

U

60

U

60

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

SEND

 

SEND

 

SEND

 

SEND

 

 

PRE

 

PRE

 

PRE

 

PRE

 

POST

 

POST

 

POST

 

POST

U

EQ

U

EQ

U

EQ

U

EQ

 

HIGH

 

HIGH

 

HIGH

 

HIGH

 

12kHz

 

12kHz

 

12kHz

 

12kHz

-15

+15

-15

+15

-15

+15

-15

+15

1k

 

1k

 

1k

 

1k

 

FREQ

 

FREQ

 

FREQ

 

FREQ

100

8k

100

8k

100

8k

100

8k

U

 

U

 

U

 

U

 

 

MID

 

MID

 

MID

 

MID

-15

+15

-15

+15

-15

+15

-15

+15

U

 

U

 

U

 

U

 

 

LOW

 

LOW

 

LOW

 

LOW

 

80Hz

 

80Hz

 

80Hz

 

80Hz

-15

+15

-15

+15

-15

+15

-15

+15

 

AUX

 

AUX

 

AUX

 

AUX

 

1

 

1

 

1

 

1

OO

MAX

OO

MAX

OO

MAX

OO

MAX

 

2

 

2

 

2

 

2

OO

MAX

OO

MAX

OO

MAX

OO

MAX

 

PAN

 

PAN

 

PAN

 

PAN

 

L

 

L

 

L

 

L

 

 

 

 

 

 

 

(MONO)

 

(MONO)

 

(MONO)

 

(MONO)

 

 

 

 

 

 

 

BAL/UNBAL

 

BAL/UNBAL

 

BAL/UNBAL

 

BAL/UNBAL

 

 

 

 

 

 

 

R

 

R

 

R

 

R

PREMIUM ANALOG MIXER w/ PERKINS EQ & FIREWIRE

 

 

 

 

 

 

 

 

U

 

U

 

U

 

U

 

CTRL ROOM/PHONES

 

 

 

 

 

 

 

SOURCE

 

0dB=0dBu

 

 

 

 

 

 

 

 

 

 

 

GAIN

 

GAIN

 

GAIN

 

GAIN

 

 

 

 

L

R

-20dB

+20dB

-20dB

+20dB

-20dB

+20dB

-20dB

+20dB

 

 

 

 

20

CLIP

 

 

 

 

 

 

 

 

 

MAIN MIX

 

15

 

SEND

 

SEND

 

SEND

 

SEND

INPUT

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRE

 

PRE

 

PRE

 

 

 

 

 

 

6

 

 

POST

 

POST

 

POST

 

 

 

 

 

 

 

U

EQ

U

EQ

U

EQ

U

LINE

 

TAPE

 

3

 

FW 1-2

 

 

 

 

 

 

 

HIGH

 

HIGH

 

HIGH

 

HIGH

 

 

 

 

0

 

 

 

 

 

FW 1-2

ALT 3-4

2

 

 

12kHz

 

12kHz

 

12kHz

 

12kHz

LEVEL

-15

+15

-15

+15

-15

+15

-15

+15

 

 

 

 

4

SET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

U

 

U

 

U

 

U

 

 

ASSIGN TO

 

10

 

 

MID

 

MID

 

MID

 

MID

 

MAIN MIX

 

20

 

 

 

 

 

 

 

 

 

 

 

2.5kHz

 

2.5kHz

 

2.5kHz

 

2.5kHz

 

 

 

 

30

 

-15

+15

-15

+15

-15

+15

-15

+15

 

 

 

 

 

 

 

 

 

 

 

 

 

OO

MAX

OO

MAX

RUDE

U

 

U

 

U

 

U

 

CONTROL

PHONES

 

 

 

 

 

 

 

 

ROOM

 

 

SOLO

 

LOW

 

LOW

 

LOW

 

LOW

 

 

 

 

 

 

 

80Hz

 

80Hz

 

80Hz

 

80Hz

 

 

 

 

 

 

-15

+15

-15

+15

-15

+15

-15

+15

 

 

AUX MASTER

 

 

AUX

 

AUX

 

AUX

 

AUX

 

SEND

 

RETURN

 

1

 

1

 

1

 

1

 

 

 

1

 

1

OO

MAX

OO

MAX

OO

MAX

OO

MAX

PRE

OO

+15

 

OO

+10

POST

RTN TO

 

 

 

 

 

 

 

 

 

 

 

AUX1

 

 

 

2

 

2

 

2

 

2

 

 

 

2

 

2

OO

MAX

OO

MAX

OO

MAX

OO

MAX

PRE

OO

+15

 

OO

+10

POST

 

PAN PAN PAN PAN

Level

Set

8Onyx 1220i

Solo

L R

L R

L R

L R

L R

L R

L R

L R

POWER

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

 

 

 

ALT 3/4

ALT 3/4

ALT 3/4

ALT 3/4

ALT 3/4

ALT 3/4

ALT 3/4

ALT 3/4

 

 

 

dB

dB

dB

dB

dB

dB

dB

dB

 

MIC

dB

10

10

10

10

10

10

10

10

 

 

10

5

5

5

5

5

5

5

5

 

 

5

U

U

U

U

U

U

U

U

 

 

U

OL

OL

OL

OL

OL

OL

OL

OL

 

 

 

5

5

5

5

5

5

5

5

OO

MAX

5

- 20

- 20

- 20

- 20

- 20

- 20

- 20

- 20

LEVEL

 

10

10

10

10

10

10

10

10

 

 

10

20

20

20

20

20

20

20

20

DESTINATION

20

30

30

30

30

30

30

30

30

 

 

30

40

40

40

40

40

40

40

40

PHONES

AUX

40

50

50

50

50

50

50

50

50

 

1-2

50

60

60

60

60

60

60

60

60

 

 

60

OO

OO

OO

OO

OO

OO

OO

O

 

 

OO

 

 

 

 

 

 

 

 

TALKBACK

 

SOLO

SOLO

SOLO

SOLO

SOLO

SOLO

SOLO

SOLO

 

 

 

1

2

3

4

5-6

7-8

9-10

11-12

TALKBACK

MAIN MIX