Stereo Line Inputs; Effects: Serial Or Parallel - Mackie 1202-VLZ Pro Owner's Manual

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:
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" .
Serial device
Insert
Send
Dry Signal
Parallel device
Aux
Send
Dry Signal(s)
12
Here's what we mean by them.
"Serial" means that the entire signal is
. To 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.)
Insert
Return
Signal Processor
(e.g., Compressor)
Aux
Return
Signal Processor
(e.g., Reverb)
Wet Signal
Channel Path
Dry Signal(s)
EFFECTS: SERIAL OR
PARALLEL?
The next two sections toss
the terms "serial" and "paral-
lel" around like hacky sacks.
Processed
Signal
Output
Section
Mix Processed
Stage Signal