Channel controls, Owner’ s manual, Profx12 profx8 – MACKIE ProFX12 User Manual

Page 17: U” like unity gain, Owner’s manual, Mono hybrid stereo mono hybrid stereo, Mon main, 7/8 st rtn fx rtn

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17

Owner’s Manual

Owner’

s Manual

Channel Controls

The vertical channel strips look very similar, with only

a few differences between them. Each channel works
independently, and just controls the signals plugged into
the inputs directly above it. There are three different
flavors of channel strip: Mono, Hybrid and Stereo.

Mono Channels (1–4 on ProFX12)

(1–2 on ProFX8)

• The mono channel controls affect both the

mono mic input and the mono line-level input.

• The gain knob adjusts both mic and line inputs.
• Each mono channel has an insert jack and low

cut switch.

• Channel 1 has a hi-z switch to connect a guitar

directly.

• The 3-band EQ has shelving high, shelving low,

and peaking mid EQ.

Hybrid Channels (5/6, 7/8 on ProFX12)

(3/4, 5/6 on ProFX8)

• Except for gain and low cut, these controls

affect the mono mic input and the stereo
line-level input.

• The gain knob adjusts the mic input only. (The

stereo line inputs are fixed at unity gain.)

• The low cut switch only affects the mic input.
• The mono mic input is split equally to the left

and right.

• The hybrid channel EQ is a 3-band design just

like the mono channel EQ.

Stereo Channels (9/10, 11/12 on ProFX12)

(7/8 on ProFX8)

• These controls affect the stereo line-level

inputs.

• The gain knob adjusts the left and right line

inputs equally. There is no level set LED or low
cut switch.

• The stereo channel EQ is a 3-band design just

like the mono channel EQ.

“U” LIKE UNITY GAIN

Mackie mixers have a “U” symbol on almost every level

control. This “U” stands for “unity gain,” meaning no
change in signal level (0 dB gain). Once you have
adjusted the input signal with the gain control, set
every control at “U” and the signals will travel through
the mixer at optimal levels. What’s more, all the labels
on our level controls are measured in decibels (dB), so
you’ll know what you’re doing level-wise if you choose to
change a control’s settings.

POWER

ON

13 DELAY 1 (300ms)
14 DELAY 2 (380ms)
15 DELAY 3 (480ms)
16 REVERB + DLY (250ms)

MAIN

RIGHT

(BALANCED)

MAIN

LEFT

USB

(BALANCED)

8K

4K

2K

1K

500

250

125

15

15

10

10

5

5

0

15

15

10

10

5

5

0

TAPE

IN

ST RETURN

MAIN OUT

PHONES

FOOTSWITCH

PHONES

TAPE

OUT

L

R

L

(UNBALANCED)

R

0dB=0dBu

MAIN

METERS

R

L

OL

4

6
3

10

15

7

10

20
30

0
2

BREAK

(MUTES ALL CHANNELS)

PHANTOM

POWER

POWER

STEREO GRAPHIC EQ

FX SEND

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

INSERT

R

L

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

OL

1

EQ

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

R

L

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

2

EQ

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

LINE IN 2

LINE/HI-Z IN 1

INSERT

BAL /

UNBAL

(MONO)

(MONO)

(MONO)

(MONO)

LINE IN 3

LINE IN 4

BAL /

UNBAL

LINE IN 5

R

L

LOW CUT

100 Hz

GAIN

3/4

EQ

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

R

L

LOW CUT

100Hz

GAIN

MIC

GAIN

U

+50

MIC

GAIN

U

+50

5/6

EQ

12kHz

HI

LEVEL

SET

LEVEL

SET

LEVEL

SET

LEVEL

SET

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

GAIN

MIC

MIC

MIC

MIC

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

U

+20

-20

R

L

7/8

ST RTN

FX RTN

EQ

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

U

+15

FX TO MON

FX MASTER

U

+15

O

O

O

O

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

L

R

LINE IN 6

BAL /

UNBAL

L

R

LINE IN 7

LINE IN 8

BAL /

UNBAL

L

R

BAL /

UNBAL

L

R

BAL /

UNBAL

L

R

MON SEND

BAL /

UNBAL

BAL /

UNBAL

MUTE

PRESETS

FX PRESETS

OL

OL

OL

OL

OL

INPUT LEVEL

USB

O

O

+20

U

TAPE LEVEL

O

O

+20

U

MON

MAIN

1

2

3/4

5/6

7/8

OL

USB THRU

LINE

HI-Z

MAIN MIX

MON

EQ IN

BYPASS

01 BRIGHT ROOM
02 WARM LOUNGE
03 SMALL STAGE
04 WARM THEATER
05 WARM HALL
06 CONCERT HALL
07 PLATE REVERB
08 CATHEDRAL
09 CHORUS
10 CHORUS + REV
11 DOUBLER
12 TAPE SLAP

O

O

MAX

LINE

HI-Z

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

48V

MONO

HYBRID

STEREO

MONO

HYBRID

STEREO

ProFX12

ProFX8

MAIN

RIGHT

(BALANCED)

MAIN

LEFT

USB

(BALANCED)

8K

4K

2K

1K

500

250

125

15

15

10

10

5

5

0

15

15

10

10

5

5

0

TAPE

IN

ST RETURN

MAIN OUT

PHONES

FOOTSWITCH

PHONES

TAPE

OUT

L

R

L

(UNBALANCED)

R

STEREO GRAPHIC EQ

FX SEND

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

MID

2.5kHz

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

LINE IN 4

INSERT

R

L

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

4

12kHz

HI

MID

2.5kHz

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

12kHz

HI

MID

2.5kHz

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

12kHz

HI

MID

2.5kHz

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

R

L

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

R

L

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

R

L

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

R

L

LOW CUT

100 Hz

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

BAL /

UNBAL

(MONO)

(MONO)

(MONO)

(MONO)

LINE IN 7

LINE IN 8

BAL /

UNBAL

LINE IN 9

R

L

LOW CUT

100 Hz

GAIN

7/8

5/6

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

R

L

MIC

GAIN

U

+50

GAIN

MIC

GAIN

U

+50

9/10

12kHz

HI

LEVEL

SET

LEVEL

SET

LEVEL

SET

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

LEVEL

SET

LEVEL

SET

LEVEL

SET

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

LOW CUT

100 Hz

U

GAIN

MI

C GAIN

U

+50

-20dB

+30dB

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

GAIN

MIC

MIC

MIC

MIC

MIC

MIC

80Hz

LOW

U

+15

-15

U

+15

-15

U

+15

-15

U

+20

-20

GAIN

U

+20

-20

R

L

11/12

ST RTN

FX RTN

EQ

EQ

EQ

EQ

EQ

EQ

EQ

EQ

12kHz

HI

PAN

AUX

U

+15

O

O

MON

FX

U

+15

O

O

U

+15

FX TO MON

FX MASTER

U

+15

O

O

O

O

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

dB

30

20

10

10

O

O

40
50

5

5

U

60

L

R

(MONO)

LINE IN 5

LINE IN 6

BAL /

UNBAL

L

R

LINE IN 10

BAL /

UNBAL

L

R

LINE IN 11

LINE IN 12

BAL /

UNBAL

L

R

BAL /

UNBAL

L

R

BAL /

UNBAL

L

R

MON SEND

BAL /

UNBAL

BAL /

UNBAL

PRESETS

FX PRESETS

01 BRIGHT ROOM
02 WARM LOUNGE
03 SMALL STAGE
04 WARM THEATER
05 WARM HALL
06 CONCERT HALL

13 DELAY 1 (300ms)
14 DELAY 2 (380ms)
15 DELAY 3 (480ms)
16 REVERB + DLY (250ms)

07 PLATE REVERB
08 CATHEDRAL
09 CHORUS
10 CHORUS + REV
11 DOUBLER
12 TAPE SLAP

MON

MAIN

4

LINE IN 3

INSERT

3

BAL /

UNBAL

3

LINE IN 2

INSERT

2

BAL /

UNBAL

BAL /

UNBAL

2

LINE/HI-Z IN 1

INSERT

1

5/6

7/8

9/10

11/12

POWER

ON

0dB=0dBu

MAIN

METERS

OL

4

6
3

10

15

7

10

20
30

0
2

BREAK

(MUTES ALL CHANNELS)

PHANTOM

POWER

POWER

O

O

+10

U

TAPE LEVEL

O

O

+20

U

USB THRU

LINE

HI-Z

O

O

MAX

1

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

MAIN MIX

MON

EQ IN

BYPASS

R

L

INPUT LEVEL

USB

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

48V

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