beautypg.com

Constant loudness, Band eq, Low eq – MACKIE 1402-VLZ3 User Manual

Page 14: Mid eq, Low eq 28. mid eq, 140-vlz3, Gain, Low eq with low cut low eq

background image

14

140-VLZ3

1402-

VLZ3

M

IC GAIN

0

U

60

-10

dBV

+15dB -45dB

M

IC GAIN

0

U

60

-10

dBV

+15dB -45dB

M

IC GAIN

0

U

60

-10d

BV

+15dB -45dB

M

IC GAIN

0

U

60

-10dBV

+15dB -45dB

M

IC GAIN

0

U

60

-10dBV

+15dB -45dB

M

IC GAIN

0

U

60

-10dBV

+15dB -45dB

U

O

O

+10

U

O

O

+20

U

O

O

+20

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

O

O

+15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

U

+15

-15

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

dB

30

20

10

O

O

40
50

5

5

U

60

10

MIC

2

MIC

3

MIC

4

MIC

5

MIC

6

BAL

OR

UNBAL

BAL

OR

UNBAL

BAL

OR

UNBAL

BAL

OR

UNBAL

BAL

OR

UNBAL

BAL

OR

UNBAL

AUX SEND

1

2

1

2

RIGHT

LEFT/

MONO

ALL BAL/UNBAL

BAL/UNBAL

L

R

LINE IN 1

LINE IN 2

LOW CUT

75 Hz

18dB/OCT

LOW CUT

75 Hz

18dB/OCT

LINE IN 3

LOW CUT

75 Hz

18dB/OCT

LINE IN 4

LOW CUT

75 Hz

18dB/OCT

LOW CUT

75 Hz

18dB/OCT

LINE IN 5

LINE IN 6

LOW CUT

75 Hz

18dB/OCT

GAIN

GAIN

GAIN

GAIN

GAIN

GAIN

LINE IN 7-8

LINE IN 9-10

LINE IN 11-12

LINE IN 13-14

AUX

HI

12kHz

MID

2.5kHz

LOW

80Hz

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

AUX

EQ

PAN

SOLO

1

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

ALT 3–4

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

2

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

3

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

4

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

5

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

6

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

7-8

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

9-10

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

11-12

MUTE

L R

HI

12kHz

MID

2.5kHz

LOW

80Hz

SOLO

13-14

MUTE

ALT 3–4

L R

L

MONO

MONO

MONO

MONO

R

BAL

OR

UNBAL

L

R

BAL

OR

UNBAL

L

R

BAL

OR

UNBAL

L

R

BAL

OR

UNBAL

TAPE

INPUT

TAPE

OUTPUT

L

R

L

R

20

10

7

4

2

0

2

4

7

10

20

30

LEVEL

SET

LEFT

RIGHT

MAIN OUT

ALT 3–4

TAPE

MAIN MIX

ASSIGN

TO MAIN MIX

SOLO

MODE

LEVEL SET (PFL)

NORMAL (AFL)

C-R/SOURCE

PO

48V

WER

RUDE

SOLO

LIGHT

MAIN MIX

CTL ROOM

/SUBMIX

0dB=0dBu

LEVEL

LEVEL

LEVEL

-

10

LEVEL

+4

-

10

+4

-

10

+4

-

10

+4

MIC

1

XDR

MIC PRE

XDR

MIC PRE

XDR

MIC PRE

XDR

MIC PRE

XDR

MIC PRE

XDR

MIC PRE

Another way to do the same thing is assign the chan-

nels to the ALT 3–4 mix, then patch out of the ALT
OUTPUT L and R back into an unused stereo channel
(7–8, 9–10, 11–12, 13–14). If that’s your choice, don’t
ever engage the MUTE/ALT 3–4 switch on that stereo
channel, or you’ll have every dog in the neighborhood
howling at your feedback loop.

Another benefit of the ALT 3–4 feature is that it

can act as a “AFL” (After-Fader-Listen): just engage a
channel's MUTE/ALT 3–4 switch and the ALT 3–4 switch
in the SOURCE matrix and you’ll get that channel, all by
itself, in the control room and phones.

MUTE/ALT 3–4 is one of those controls that can bewil-

der newcomers, so take your time and play around with
it. Once you’ve got it down, you’ll probably think of a
hundred spiffy uses for it!

26. PAN

PAN adjusts the amount of chan-

nel signal sent to the left versus the
right outputs. On mono channels
(ch. 1–6 or 7–14 with connections
to the left input only) these controls
act as pan pots. On stereo channels
(7–14) with stereo connections to
L and R inputs, the PAN knob works
like the balance control on your
home stereo.

PAN determines the fate of the

main mix and ALT 3–4 mix. With
the PAN knob hard left, the signal
will feed either MAIN OUT L (bus
1) or ALT OUTPUT L (bus 3),
depending on the position of the
ALT 3–4 [25] switch. With the knob
hard right, the signal feeds MAIN
OUT R (bus 2) or ALT OUTPUT R
(bus 4).

CONSTANT LOUDNESS ! ! !

The 1402-VLZ3’s PAN controls employ a design called

“Constant Loudness.” It has nothing to do with living
next to a freeway. As you turn the PAN knob from left
to right (thereby causing the sound to move from the
left to the center to the right), the sound will appear to
remain at the same volume (or loudness).

If you have a channel panned hard left (or right) and

reading 0 dB, it must dip down about 4 dB on the left
(or right) when panned center. To do otherwise (the
way Brand X compact mixers do) would make the sound
appear much louder when panned center.

3-BAND EQ

The 1402-VLZ3 has 3-band equalization at carefully

selected points — LOW shelving at 80 Hz, MID peaking
at 2.5 kHz, and HI shelving at 12 kHz. “Shelving” means
that the circuitry boosts or cuts all frequencies past the
specified frequency. For example, rotating the LOW EQ
knob 15 dB to the right boosts bass starting at 80 Hz and
continuing down to the lowest note you never heard.
“Peaking” means that certain frequencies form a “hill”
around the center frequency — 2.5 kHz in the case of
the MID EQ.

27. LOW EQ

This control gives you

up to 15 dB boost or cut
below 80 Hz. The circuit is
flat (no boost or cut) at the
center detent position. This
frequency represents the
punch in bass drums, bass
guitar, fat synth patches,
and some really serious
male singers.

Used in conjunction with

the LOW CUT [3] switch,
you can boost the LOW EQ
without injecting a ton of
subsonic debris into the
mix.

28. MID EQ

Short for “midrange,”

this knob provides 15 dB
of boost or cut, centered at
2.5 kHz, also flat at the cen-
ter detent. Midrange EQ
is often thought of as the
most 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.

20

Hz

100

Hz

1k

Hz

10k

Hz

20k

Hz

–15

–10

–5

0

+5

+10

+15

Mid EQ

20

Hz

100

Hz

1k

Hz

10k

Hz

20k

Hz

–15

–10

–5

0

+5

+10

+15

20

Hz

100

Hz

1k

Hz

10k

Hz

20k

Hz

–15

–10

–5

0

+5

+10

+15

Low EQ with Low Cut

Low EQ

26

27

29

28

30

31