24
VLZ4 4•Bus
Stereo Effects Processors,
Headphones, Talkback, Main
and Groups Mix*
There are two identical Running-Man 32-bit internal
effects processors. They are mono-in, stereo-out effects
processors, with 24 presets each. Signals to these effects
processors come from adjusting the FX1 and/or FX2 aux
send [29] on each channel and the FX masters [61].
The stereo output from each processor may be
added to the main mix using the 'FX to main' knob [62].
The stereo output from each processor may also
be added to aux 1 and/or aux 2 by adjusting the
'FX to aux' control [62].
* Affectionately referred to as “the meat 'n potatoes”.
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
PAN
L
R
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
MID
200
2k
800
100
8k
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
FREQ
1
MUTE
PAN
L
R
2
MUTE
PAN
L
R
3
MUTE
PAN
L
R
4
MUTE
PAN
L
R
5
MUTE
PAN
L
R
6
MUTE
PAN
L
R
7
MUTE
PAN
L
R
8
MUTE
PAN
L
R
9
MUTE
PAN
L
R
10
MUTE
PAN
L
R
11
MUTE
PAN
L
R
12
MUTE
PAN
L
R
13
MUTE
PAN
L
R
14
MUTE
PAN
L
R
15
MUTE
PAN
L
R
16
MUTE
PAD
-20dB
1
LOW CUT
100 Hz
GAIN
PAD
-20dB
2
LOW CUT
100 Hz
GAIN
PAD
-20dB
3
LOW CUT
100 Hz
GAIN
PAD
-20dB
4
LOW CUT
100 Hz
GAIN
PAD
-20dB
5
LOW CUT
100 Hz
GAIN
PAD
-20dB
6
LOW CUT
100 Hz
GAIN
PAD
-20dB
7
LOW CUT
100 Hz
GAIN
PAD
-20dB
8
LOW CUT
100 Hz
GAIN
PAD
-20dB
9
LOW CUT
100 Hz
GAIN
PAD
-20dB
10
LOW CUT
100 Hz
GAIN
PAD
-20dB
11
LOW CUT
100 Hz
GAIN
PAD
-20dB
12
LOW CUT
100 Hz
GAIN
PAD
-20dB
13
LOW CUT
100 Hz
GAIN
PAD
-20dB
14
LOW CUT
100 Hz
GAIN
PAD
-20dB
15
LOW CUT
100 Hz
GAIN
PAD
-20dB
16
LOW CUT
100 Hz
GAIN
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
1
2
SUBGROUPS
PUSH
TO TALK
MAIN
RIGHT
AUX 1-4
SOLO
STEREO
LEFT
RIGHT
SOLO
LEFT
RIGHT
SOLO
STEREO
LEFT
RIGHT
SOLO
LEFT
1
2
3
4
MAIN MIX
TALKBACK
OFF
MAX
COMP
OFF
MAX
COMP
OFF
MAX
COMP
OFF
MAX
COMP
LEVEL
PHONES
TO AUX 1
TO AUX 2
SOLO
MONITOR
TAP
DELAY
MUTE
TO AUX 1
TO AUX 2
TAP
DELAY
MUTE
FX MASTER
FX MASTER
TO LR
TO LR
FX
2
SIG/OL
FX
1
SIG/OL
SOLO
SOLO
1
2
3
4
SOLO
SOLO MODE
SOLO
SOLO
SOLO
SOLO
SOLO
PFL
AFL
AUX
AUX
AUX
AUX
CH 1-2
CH 3-4
AUX 5-6
PWR
RUDE SOLO
48V
USB OUT
SUBS 3-4
20
10
7
4
2
0
2
4
7
10
20
30
LEVEL
SET
SUBS 1-2
MAIN
TO LR
TAPE
USB
2-TRACK RETURN
SUCK
SOLO
12V
0.5A
OFF
MAX
COMP
OFF
MAX
COMP
OFF
MAX
COMP
OFF
MAX
COMP
LOW CUT
100 Hz
LOW CUT
100 Hz
LOW CUT
100 Hz
LOW CUT
100 Hz
FX 1
FX 2
USB
21
22
23
24
HI
12k
HI
MID
2.5k
LOW
MID
400Hz
HI
MID
2.5k
-15
+15
U
-15
+15
U
-15
+15
U
-15
+15
U
LOW
80Hz
LOW
MID
400Hz
LOW
80Hz
-15
+15
U
HI
12k
2
3
4
5
6
1
+15
U
+15
U
+20
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
+15
U
-15
+15
U
-15
+15
U
-15
+15
U
-20
+20
U
-20
+20
U
AUX MASTER
LR
STEREO RETURNS
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
FREQ
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
FREQ
MID
200
2k
800
100
8k
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
FREQ
MID
200
2k
800
100
8k
EQ
EQ
EQ
HI
12k
-15
+15
U
-15
+15
U
LOW
80Hz
-15
+15
U
FREQ
MID
200
2k
800
100
8k
PAN
L
R
17
MUTE
PAN
L
R
18
MUTE
PAN
L
R
19
MUTE
PAN
L
R
20
MUTE
BAL
L
R
21/22
MUTE
ALT 3-4
BAL
L
R
0 dB=0 dBu
LEFT RIGHT
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
1-2
3-4
LR
OL
-20
30
20
10
10
40
50
5
5
U
60
dB
O
O
SOLO
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
FX
AUX 5/6
PRE
PRE
FX1
FX2
PRE
1
2
+15
U
AUX
+15
U
3
4
5
6
+15
U
+15
U
+15
U
+15
U
23/24
MUTE
ALT 3-4
30
20
10
10
40
50
5
5
U
60
dB
O
O
30
20
10
10
40
50
5
5
U
60
dB
O
O
30
20
10
10
40
50
5
5
U
60
dB
O
O
30
20
10
10
40
50
5
5
U
60
dB
O
O
30
20
10
10
40
50
5
5
U
60
dB
O
O
30
20
10
10
40
50
5
5
U
60
dB
O
O
17
GAIN
18
GAIN
19
GAIN
20
GAIN
LINE GAIN
LINE GAIN
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
30
-20dB
+40dB
U
60
U
40
20
50%
100%
0%
25%
75%
61
67
68
69
70
72
73
74
75
71
64
65
66
63
62
Or the FX returns may be routed to the stereo input
channels[23/24 on the 2404 VLZ4, 31/32 on the 3204
VLZ4], using the the FX1 and/or FX2 switches [44].
This allows for way more flexibility. For example, you
can EQ the FX and send them to any aux, group, or
main. Just remember to turn the 'to aux 1', 'to aux 2'
and 'to main' knobs [62] fully counter-clockwise to
avoid double-bussing.
The talkback feature allows the engineer to
communicate with the talent either through the phones
output [17] or the aux 1-4 send outputs [13] using
an external talkback microphone. This saves a lot of
shouting over the audience's heads as you set up the
talented one's stage monitors to their peculiarly-picky
satisfaction.
61. FX1 and FX2 Send Master
These knobs control the level of the signals going into
each internal effects processor. Adjust them carefully,
keeping an eye on the adjacent sig/ol LED [63] to
prevent overloading the effects processor.
62. FX1 and FX2 to Aux 1/Aux 2/Main
These knobs route the effects output to aux 1, aux
2 and mains independently. Use aux 1 and aux 2 to
provide effects to monitors. Slowly add effects to the
monitors by turning the 'to aux 1' and 'to aux 2' knobs
clockwise. Use the aux master to monitor the amount
sent. The FX output to the mains will be heard directly
from the PA.
63. SIG/OL LED
These dual-LEDs illuminate green when the signal
level going into each effects processor is within a good
operating range (sig). They illuminate red if the effects
processor is overloaded with too strong of a signal (ol).
Turn down the send master levels [61] and check the
channel sends if these light red regularly.
The signals going into the processors are affected by
the channels' aux 5/6 sends [29], the channel gain [23],
EQ [31-36], and channel faders [43], as well as the FX
Send Master [61].
64. Preset Display
These displays show the number of the currently
selected effects preset, as shown in the list of presets
silkscreened above. Rotate the preset selector knob
right or left to change a preset.
A new preset will be loaded approximately 1/4 of a
second after you stop turning the knob, and it will be
stored into the FX memory after about one second.
When the VLZ4 4•Bus mixer is turned on, the FX
section will load up the last-used preset.
