Mackie 1202-VLZ Pro Owner's Manual - Page 12

Stereo Line Inputs, Effects: Serial or Parallel?, LEFT MONO, LINE IN, RIGHT, CHANNEL INSERT - mixer 12 channel

Page 12 highlights

MIC 1 XDR MIC PRE MIC 2 XDR MIC PRE MIC 3 XDR MIC PRE MIC 4 XDR MIC PRE LEFT/MONO RIGHT 1 ALL BAL/UNBAL 1 LEFT RIGHT 2 L 2 R BAL/UNBAL L R BAL OR UNBAL BAL OR UNBAL BAL OR UNBAL BAL OR STEREO AUX RETURN UNBAL MONO AUX SEND MONO LINE IN 1 LOW CUT 75 Hz 18dB/OCT U M-1IC0dGBAVIN LINE IN 2 LOW CUT 75 Hz 18dB/OCT U M-1IC0dGBAVIN LINE IN 3 LOW CUT 75 Hz 18dB/OCT U M-1IC0dGBAVIN LINE IN 4 LOW CUT 75 Hz 18dB/OCT U M-1IC0dGBAVIN 0 60 +15dB -45dB TRIM 0 60 +15dB -45dB TRIM 0 60 +15dB -45dB TRIM 0 60 +15dB -45dB TRIM L BAL OR UNBAL R LINE IN 5-6 L BAL OR UNBAL R LINE IN 7-8 TAPE TAPE INPUT OUTPUT MONO L BAL OR UNBAL R MAIN OUT MONO L BAL OR UNBAL R LINE IN 9-10 LINE IN 11-12 PHONES STEREO LINE INPUTS (Channels 5-6, 7-8, 9-10 and 11-12) These fully balanced inputs are designed for stereo or mono, balanced or unbalanced signals, from -10dBV to +4dBu. They can be used with just about any professional or semipro instrument, effect or tape player. To learn how signals are routed from these inputs: . To wire your own cables: . In the stereo audio world, an odd-numbered channel usually receives the "left signal." For example, you would feed the 1202-VLZ PRO's line inputs 5-6 a stereo signal by inserting the device's left output plug into the channel 5 jack, and its right output plug into the channel 6 jack. When connecting a mono device (just one cord), always use the LEFT (MONO) input (LINE IN jacks 5, 7, 9 or 11) and plug nothing into the RIGHT input (LINE IN jacks 6, 8, 10 or 12)- this way the signal will appear on both sides. This trick is called "jack normalling" . EFFECTS: SERIAL OR PARALLEL? The next two sections toss the terms "serial" and "parallel" around like hacky sacks. Here's what we mean by them. "Serial" means that the entire signal is routed through the effects device. Examples: compressor/limiters, graphic equalizers. Linelevel sources can be patched through a serial effects device before or after the mixer, or preferably through the insert jacks located on the rear panel (CHANNEL INSERT send/return). "Parallel" means that a portion of the signal in the mixer is tapped off to the device (AUX SEND), processed and returned to the mixer (STEREO AUX RETURN) to be mixed with the original "dry" signal. This way, multiple channels can all make use of the same effects device. Examples: reverb, digital delay. (See diagrams below.) Serial device Insert Send Dry Signal Parallel device Aux Send Dry Signal(s) Insert Return Signal Processor (e.g., Compressor) Processed Signal Signal Processor (e.g., Reverb) Aux Return Wet Signal Output Section Channel Path Mix Stage Dry Signal(s) Processed Signal 12

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12
LINE IN 1
LINE IN 2
LINE IN 3
LINE IN 4
L
MONO
L
MONO
L
MONO
L
MONO
PHONES
LINE IN 5-6
R
R
R
R
AUX SEND
TAPE
INPUT
TAPE
OUTPUT
L
R
1
2
1
2
RIGHT
L
R
RIGHT
MIC
1
MIC
2
MIC
3
MIC
4
LEFT
LEFT/
MONO
STEREO AUX RETURN
MAIN OUT
BAL/UNBAL
LINE IN 7-8
LINE IN 9-10
LINE IN 11-12
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
BAL
OR
UNBAL
ALL BAL/UNBAL
LOW CUT
75 Hz
18dB/OCT
TRIM
+15dB -45dB
M
I
C
G
A
I
N
0
U
60
-
1
0
d
B
V
LOW CUT
75 Hz
18dB/OCT
TRIM
+15dB -45dB
M
I
C
G
A
I
N
0
U
60
-
1
0
d
B
V
LOW CUT
75 Hz
18dB/OCT
TRIM
+15dB -45dB
M
I
C
G
A
I
N
0
U
60
-
1
0
d
B
V
LOW CUT
75 Hz
18dB/OCT
TRIM
+15dB -45dB
M
I
C
G
A
I
N
0
U
60
-
1
0
d
B
V
X
D
R
M
I
C
P
R
E
X
D
R
M
I
C
P
R
E
X
D
R
M
I
C
P
R
E
X
D
R
M
I
C
P
R
E
STEREO LINE INPUTS
(Channels 5–6, 7–8, 9–10 and 11–12)
These fully balanced inputs are designed for
stereo or mono, balanced or unbalanced sig-
nals, from –10dBV to +4dBu. They can be used
with just about any professional or semipro
instrument, effect or tape player.
To learn how
signals are routed from these inputs:
.
To
wire your own cables:
.
In the stereo audio world, an odd-numbered
channel usually receives the “left signal.” For
example, you would feed the 1202-VLZ PRO’s line
inputs
5-6
a stereo signal by inserting the device’s
left output plug into the channel
5
jack, and its
right output plug into the channel
6
jack.
When connecting a mono device (just one
cord), always use the
LEFT (MONO)
input
(
LINE IN
jacks
5
,
7
,
9
or
11
) and plug nothing
into the
RIGHT
input (
LINE IN
jacks
6
,
8
,
10
or
12
)— this way the signal will appear on both
sides. This trick is called “jack normalling”
.
EFFECTS: SERIAL OR
PARALLEL?
The next two sections toss
the terms “serial” and “paral-
lel” around like hacky sacks.
Here’s what we mean by them.
“Serial” means that the
entire
signal is
routed through the effects device. Examples:
compressor/limiters, graphic equalizers. Line-
level sources can be patched through a serial
effects device before or after the mixer, or pref-
erably through the insert jacks located on the
rear panel (
CHANNEL INSERT
send/return).
“Parallel” means that a
portion
of the signal
in the mixer is tapped off to the device (
AUX
SEND
), processed and returned to the mixer
(
STEREO AUX RETURN
) to be mixed with the
original “dry” signal. This way, multiple chan-
nels can all make use of the same effects
device. Examples: reverb, digital delay. (See
diagrams below.)
Dry Signal
Processed
Signal
Insert
Send
Insert
Return
Dry Signal(s)
Dry Signal(s)
Aux
Send
Aux
Return
Wet Signal
Channel Path
Mix
Stage
Output
Section
Processed
Signal
Signal Processor
(e.g., Compressor)
Signal Processor
(e.g., Reverb)
Parallel device
Serial device