Aux 1, 2, 3, 4; Pre - Mackie 1642-VLZ Pro Owner's Manual

AUX 1, 2, 3, & 4
These four knobs tap a portion of each
channel's signal, mix them together and send
them to the AUX SEND outputs . They are
off when turned fully down, deliver unity gain
at the center detent, and can provide up to 15
dB of gain turned fully up. Chances are you'll
never need this extra gain, but it's nice to
know it's there if you do.
The AUX SEND outputs are then patched
to parallel effects processor inputs
stage monitor amp inputs. AUX SENDS 1 and
2 levels are controlled not only by the
channel's AUX knobs, but also by the AUX
SEND master knobs
.
AUX SENDS can also be used to generate
separate mixes for recording or "mix-minuses"
for broadcast. By using AUX 1 or 2 in the PRE
mode , these mix levels can be obtained in-
dependently of a channel's fader settings.
We recommend going into a stereo reverb in
mono and returning in stereo. We have found
that on most "stereo" reverbs, the second input
just ties up an extra aux send and adds nothing
to the sound. There are exceptions, so feel free
to try it both ways. Should you choose to use two
aux sends, use the "odd" AUX (1 or 3) to feed
its left input and the "even" AUX (2 or 4) to
feed the right input. Remember, if you're also
dealing with a stereo source signal, you'll want
to follow the sides — use the odd AUX on the
channel carrying the left side and the even AUX
on the channel carrying the right.

PRE

This switch determines the tap point of
AUX 1 and 2. Generally, "post" sends are used
to feed effects devices, and "pre" sends are
or
used to feed your stage monitors. See the "Pre
vs. Post" diagram below. AUX 3 and 4 are
always in post mode.
In post mode (switch up), AUX 1 and 2 will
follow the EQ, LOW CUT, fader and MUTE set-
tings. If you fade the channel, you fade the
send. This is a must for effects sends, since you
want the levels of your "wet" signals to follow
the level of the "dry."
In PRE mode (switch down), AUX 1 and 2
follow the TRIM and LOW CUT settings only.
EQ, PAN, fader and MUTE settings have no ef-
fect on the PRE sends. This is the preferred
method for setting up stage monitor feeds —
they'll be controlled independently of the fader
and mute moves.
Pre Vs. Post
TRIM
15
U
16
+20
-20
AUX
U
1
+15
O O
U
2
O O +15
PRE
U
3
+15
O O
U
4
O O +15
EQ
U
HI
12k
-15 +15
U
HI
MID
3K
-
15 +15
U
LOW
MID
800Hz
-
15 +15
U
LOW
80Hz
- 15 +15
PAN
L R
15-16
MUTE
OL
dB
10
5
-20
U
SOLO
5
10
1-2
20
3-4
30
40
50
L/R
60
O O
EFX
B
Stereo Channel
21