Mackie PROFX16 11. HI EQ, 12. MID EQ and 13. FREQ (mono channels only), 14. MID EQ (stereo channels only), 15. LOW EQ, 16. AUX MON

5
MIC	MIC	MIC
XX	XX	XX/ XX
BAL /UNBAL	BAL /UNBAL	BAL /UNBAL
6		L
		(MONO)
LINE IN	LINE IN	LINE IN XX
8	25	7
		R

BAL /UNBAL

1

BAL /UNBAL

2

MON SEND

XX/ XX

BAL /UNBAL

L

(MONO)

LINE IN XX

R

FOOTSWITCH

BAL /UNBAL

FX SEND

XX/ XX

BAL /UNBAL

L

(MONO)

LINE IN XX

R

11. HI EQ

The hi EQ provides up to	+15
15 dB of boost or cut above
	+10
12 kHz, and it is also flat (no	+5
	0
boost or cut) at the detent.
	–5
Use it to add sizzle to cymbals,	–10
an overall sense of	–15
	20Hz	100Hz	1kHz	10kHz 20kHz

transparency, or an edge to keyboards, vocals, guitar and

bacon frying. Turn it down a little to reduce sibilance or to mask tape hiss.

12. MID EQ and 13. FREQ (mono channels only)

				OFF		MAX
	INSERT			COMP			LINE IN XX
		U			U			G
	IC	G		IC	G		IC
			AI			AI			AI
9	M		N	M		N	M		N
	U		+50	U		+50	U		+50
-20dB			+30dB	-20dB		+30dB	GAIN
10	GAIN			GAIN
	LOW CUT			LOW CUT			LOW CUT
	100Hz			100Hz			100Hz
11		U	EQ		U	EQ	U		EQ
			HI			HI			HI

LINE IN XX

U

-20 +20

GAIN

UEQ

HI

LINE IN XX
U
-20 +20
GAIN SOURCE	24
LINE
USB

UEQ

HI

The mono channels employ a semi-parametric mid-sweep EQ. The gain (up to 15 dB of boost or cut) is set via the mid eq [12], and then “aimed” at a specific frequency, from

100 Hz to 8 kHz, via freq [13].

+15

+10

+5

0

–5

–10
–15
20Hz	100Hz	1kHz	10kHz 20kHz

	12kHz			12kHz		12kHz
-15	+15	-15	+15		-15	+15
12	U		U
	MID			MID		U
				14
	+15		+15
-15		-15				MID
	600		600			2.5kHz
						+15
150	1.5k	150		1.5k	-15
13	FREQ			FREQ
100	8k	100	8k			U
15	U		U
	LOW			LOW		LOW
	80Hz			80Hz		80Hz
					-15	+15
-15	+15	-15	+15
	U AUX		U	AUX		U AUX
	MON			MON		MON
	1			1		1
OO	+15	OO	+15		OO	+15
16	U		U			U

12kHz

-15 +15

U

MID

2.5kHz

-15 +15

U

LOW 80Hz

-15 +15

UAUX

	MON
	1
OO	+15
	U

12kHz

-15 +15

U

MID

2.5kHz

-15 +15

U

LOW 80Hz

-15 +15

UAUX

	MON
	1
OO	+15
	U

14. MID EQ (stereo channels only)

Short for “midrange,” this	+15
knob provides up to 15 dB of	+10
	+5
boost or cut, centered at
	–50
2.5 kHz, also flat at the center
detent. Midrange EQ is often	–10
thought of as the most	–15
	20Hz	100Hz	1kHz	10kHz 20kHz
dynamic, because the frequencies that define any

particular sound are almost always found in this range. You can create many interesting and useful EQ changes by turning this knob down as well as up.

	MON		MON
	2		2
OO	+15	OO	+15
	U		U

17 FX FX

OO +15 OO +15

	MON
	2
OO	+15
	U
	FX
OO	+15

	MON
	2
OO	+15
	U
	FX
OO	+15

	MON
	2
OO	+15
	U
	FX
OO	+15

15. LOW EQ

The low EQ provides up to +15

18

PAN PAN

PAN

PAN

PAN

15 dB of boost or cut below	+10
	+5
80 Hz. The circuit is flat at
	0

	L R		L R
19	OL	OL
		MUTE 20	MUTE
		XX	XX
dB		dB
10		10

L R

OL

MUTE

XX/ XX

dB 10

L R	L R
OL	OL
MUTE	MUTE

XX/ XX	XX/ XX
dB	dB
10	10

the center detent position.	–5
This frequency represents the	–10
punch in bass drums, bass	–15
	20Hz	100Hz	1kHz	10kHz 20kHz

guitar, fat synth patches, and some really serious male

5		5
U	1-2	21	1-2
		U
23

5

U

1-2

5	5
1-2	1-2
U	U

singers who eat raw beef for breakfast.

5	5
3-4	21	3-4

1010

20210

	L-R		L-R
30		30
	PFL		PFL
40	SOLO	40	SOLO
50		22
		50
60		60
OO		OO

5

3-4

10

20

L-R

30

PFL

40 SOLO

50

60

OO

5		5
10	3-4	10	3-4
20		20
	L-R		L-R
30		30
	PFL		PFL
40	SOLO	40	SOLO
50		50
60		60
OO		OO

16. AUX MON 1-2

These knobs tap a portion of each channel's signal to set up a nice monitor mix feeding stage monitors, independent of the main mix. Adjust these controls on each channel until the band is happy with the stage monitor mix.

Mono Channels	Stereo Channels
Channels 1-8 on ProFX16	Channels 9-16 on ProFX16
Channels 1-14 on ProFX22	Channels 15-22 on ProFX22

The controls are off when fully turned down, deliver unity gain at the center detent, and can provide up to 15 dB of gain turned fully up.

14ProFX16 and ProFX22