Pr ofx8 and pr ofx12, Stereo return, Mono line inputs – MACKIE ProFX12 User Manual

Page 14: Stereo line inputs, Channel insert, Profx8 and profx12, Mon main, 11/12 st rtn fx rtn

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14

ProFX8 and ProFX12

Pr

oFX8 and Pr

oFX12

The insert point is after the gain control [19], level

set LED [20] and low cut switch [21], but before the
channel EQ [22-24] and fader [30]. The channel signal
may go out of the insert jack to an external device, be
processed (or whatever) and come back in on the same
insert jack. To do this requires a special insert cable
that must be wired thusly:

Tip = send (output to effects device)
Ring = return (input from effects device)
Sleeve = common ground

Insert jacks may be used as channel direct outputs;

post-gain, and pre-EQ. See the connector section on
page 28 (figure F) showing three ways to use insert
connections.

11. STEREO RETURN

This is where to connect the outputs of parallel

effects devices (or extra audio sources). The circuits
will handle stereo or mono, balanced or unbalanced
signals. They may be used with just about any pro or
semi-pro effects device or line-level source on the
market. The signals coming into these inputs may be
adjusted using the stereo return fader [44] before
passing onto the main mix bus (see page 23). Signals
coming in here may also be quickly muted with the
mute switch [43], and the OL LED [42] will illuminate
if the incoming signal is too high.

Stereo Device: If using a stereo parallel effects device

(two cords), use stereo return left and right.

Mono Device: If using an effects device with a mono

output (one cord), plug that into the stereo return left/
mono, and leave the right unplugged. The signal will be
sent to both sides, magically appearing in the center as
a mono signal.

8. MONO LINE INPUTS

These 1/4" jacks share circuitry (but not phantom

power) with the mic preamps and may be driven by
balanced or unbalanced sources.

To connect balanced lines to these inputs, use a

1⁄4" Tip-Ring-Sleeve (TRS) plug.

To connect unbalanced lines to these inputs, use a

1⁄4" mono (TS) phone plug or instrument cable.

If using a stereo source, and the stereo
and hybrid channels are in use, utilize two
mono channels instead. Traditionally, an

odd-numbered channel receives the left signal. For
example, feed the ProFX mixer a stereo signal by
inserting the device’s left output plug into the
channel 1 jack (panned fully left) and its right output
plug into the channel 2 jack (panned fully right).

9. STEREO LINE INPUTS

These 1/4" jacks may be driven by stereo or mono,

balanced or unbalanced sources. They may be used
with just about any professional or semi-pro
instrument, effect or tape player.

To connect balanced lines to these inputs, use a 1⁄4"

Tip-Ring-Sleeve (TRS) plug.

To connect unbalanced lines to these inputs, use a

1⁄4" mono (TS) phone plug or instrument cable.

If using just a mono source, plug it into the left input

(labeled mono) and the signal will appear (as if by
magic) equally on the left and right of the main mix.

10. CHANNEL INSERT

These unbalanced 1/4" jacks are for connecting serial

effects processors such as compressors, equalizers,
de-essers, or filters.

We’ve included inserts for just the mono channels.

If using this kind of processing on other channels,
simply patch through the processor before plugging
into the ProFX mixer.

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

6

5

7

10

8

8

8

9

9

9

10

10

10

9

11

12

14

15
16

13

5

5

5

5

5

17

18

“tip”

This plug connects to one of the

mixer’s Channel Insert jacks.

“ring”

tip

ring

sleeve

SEND to processor

RETURN from processor

(TRS plug)

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