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PAD
-20dB
AUX
AUX
U
U
1
1
+15
+15
U
U
2
2
27
+15
+15
U
U
3
3
+15
+15
U
U
4
4
28
+15
+15
U
U
5
5
29
+15
+15
U
U
6
6
30
+15
+15
FX
FX
AUX 5/6
EQ
EQ
U
U
31
+15
-15
+15
U
U
32
+15
-15
+15
800
800
33
2k
200
2k
200
8k
100
8k
U
U
34
LOW
LOW
80Hz
80Hz
+15
-15
+15
PAN
PAN
Mono channel
volume when the channel level is adjusted. For external
processors, use post. In this way, the feed to external
R
L
R
15
16
processors will vary with the channel level, keeping
MUTE
them in the same ratio (wet/dry).
28. Pre-Fader / Aux Sends 1-2
dB
dB
10
10
Aux sends 1-2 are always pre-fader, designed for
5
5
stage monitor applications. Aux sends 3-4 may be set
to pre- or post-fader, so they may be used for monitors
U
U
SOLO
SOLO
or effects.
5
5
10
10
Pre-fader: with the pre switch engaged (pressed in,
not commited to marriage), aux 3 and 4 deliver signals
20
20
post-insert, post-low cut, post EQ, post-mute and
30
30
pre-fader. Any changes made to the channel controls,
40
40
except the fader, will affect the aux send signal.
50
50
60
60
O O
O O
Post-fader: with the pre switch disengaged (up),
aux 3 and 4 deliver signals post-insert, post-low cut,
post-mute, post-EQ and post-fader. Any changes made
to the channel controls will affect the aux send signal.
18
VLZ4 4•Bus
COMP
COMP
OFF
MAX
OFF
MAX
27. Aux Sends 1-6
AUX
U
These controls allow you to set up
U
1
1
to six independent mixes, typically
for running stage monitors or
+15
+15
U
U
external effects processors.
2
2
The controls are off when turned
+15
+15
fully down, deliver unity gain at the
U
U
center, and can provide up to 15 dB
3
3
of gain turned fully up. Chances are
+15
+15
U
U
that you will never need this extra
4
4
gain, but it's nice to know that it's
there if you do.
+15
+15
Aux Sends 1-6 [13] are line-level
U
U
outputs, and are used if you want
5
5
to connect external processors,
+15
+15
U
U
powered stage monitors, or external
power amps with passive stage
6
6
monitors. Stereo Returns 1-2 [5]
+15
+15
are line-level inputs, typically used
FX
FX
AUX 5/6
AUX 5/6
to return the output from external
EQ
U
U
processors back to the main mix.
Carefully adjust how much of each
-15
+15
-15
+15
channel appears in your aux mixes.
U
U
For example, if you are running
stage monitors, and someone wants
-15
+15
-15
+15
800
800
"more me, and less them," adjust
these carefully.
2k
200
2k
100
8k
100
8k
Aux sends 3-4 can either be pre or
U
U
LOW
LOW
post fader, depending on the position
80Hz
80Hz
of the aux pre/post switches [28].
-15
+15
-15
+15
For stage monitor work, use pre, so
PAN
the stage monitors do not increase in
L
R
L
R
17
18
MUTE
MUTE
dB
10
5
U
SOLO
SOLO
5
10
20
30
40
50
60
O O
COMP
COMP
OFF
MAX
OFF
MAX
29. Int FX 1-2 / Aux Sends 5-6
AUX
AUX
U
These controls have dual functions depending on
U
1
1
what your needs are at any given time. They allow you
to send signal either to internal effects FX1 and FX2, or
+15
+15
U
U
to aux 5 and aux 6, typically used for running stage
2
2
monitors or external effects processors.
+15
+15
Aux Sends 5-6 (or FX1-2) are post-fader. Any changes
U
U
made to the channel controls will affect the signal going
3
3
to the internal effects processors or to the aux 5-6
+15
+15
U
U
output jacks [13]. Adjustments to the channel fader
4
4
[43], gain [23] and channel EQ [31-36] will affect the
feed going to the internal effects processors.
+15
+15
U
U
30. Int FX / Aux 5-6 Switch
5
5
This switch determines if that channel's controls
+15
+15
U
U
[29, above] will be used for running the internal effects
processors (engaged) or as aux 5-6 (disengaged).
6
6
+15
+15
FX
FX
Channel Equalization (EQ)
AUX 5/6
AUX 5/6
EQ
EQ
All VLZ4 4•Bus mono channels have 3-band EQ with
U
U
shelving high, peaking mid with adjustable mid
frequency and shelving low. The stereo channels have
-15
+15
-15
+15
U
peaking hi-mid and peaking low-mid EQ controls in
U
addition to the shelving high and shelving low EQ
controls.
-15
+15
-15
+15
800
800
Shelving means that the circuitry boosts or cuts all
200
2k
200
2k
frequencies past the specified frequency. For example,
100
8k
100
8k
the low EQ boosts bass frequencies below 80 Hz and
U
U
LOW
LOW
80Hz
continuing down to the lowest note you never heard.
80Hz
Peaking means that certain frequencies form a "hill"
-15
+15
-15
+15
around the center frequency.
PAN
PAN
With too much EQ, you can really upset things.
We've designed a lot of boost and cut into each
L
R
L
R
equalizer circuit because we know that everyone
19
20
will occasionally need that. But if you max the EQ
MUTE
MUTE
on every channel, you'll get mix mush. Equalize subtly
and use the left sides of the knobs (cut), as well as the
dB
dB
right (boost). If you find yourself repeatedly using a
10
10
lot of boost or cut, consider altering the sound source,
5
5
such as placing a mic differently, trying a different kind
U
U
of mic, a different vocalist, changing the strings, or
SOLO
SOLO
gargling.
5
5
10
10
20
20
30
30
40
40
50
50
60
60
O O
O O
USB
AUX
AUX
U
U
1
1
+15
+15
U
U
2
2
+15
+15
U
U
3
3
+15
+15
U
U
4
4
+15
+15
U
U
5
5
+15
+15
U
U
6
6
+15
+15
FX
FX
AUX 5/6
AUX 5/6
EQ
EQ
U
U
-15
+15
-15
+15
U
U
-15
+15
-15
+15
U
U
-15
+15
-15
+15
U
U
LOW
LOW
80Hz
80Hz
-15
+15
-15
+15
BAL
BAL
L
R
L
R
21/22
23/24
MUTE
MUTE
ALT 3-4
ALT 3-4
dB
dB
dB
10
10
10
5
5
5
U
U
U
SOLO
SOLO
5
5
5
10
10
10
20
20
20
30
30
30
40
40
40
50
50
50
60
60
60
O O
O O
O O
TAPE
SOLO
+20
USB
TO LR
U
U
1
SOLO
+15
+15
U
U
2
SOLO
+15
+15
U
U
3
SOLO
+15
+15
U
U
4
SOLO
+15
+15
U
U
5
SOLO
+15
+15
U
1
6
SOLO
SOLO
+15
1
FX
U
U
SIG/OL
+15
+15
FX MASTER
TO AUX 1
U
TAP
TAP
+15
DELAY
DELAY
TO AUX 2
U
MUTE
MUTE
+15
TO LR
SUBGROUPS
OFF
MAX
OFF
MAX
OFF
COMP
COMP
1
2
dB
dB
dB
10
10
10
5
5
5
U
U
U
5
5
5
10
10
10
20
20
20
30
30
30
40
40
40
50
50
50
60
60
60
O O
O O
O O
SU
A
A
A
A
U
FX MAS
COM
3
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