Channel strip description, U" like unity gain, Fader – MACKIE 1402-VLZPRO User Manual

Page 18: Solo, Mute/alt 3-4, U” like unity gain, Mute/alt 3–4

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CHANNEL STRIP DESCRIPTION

The ten channel strips look alike, and

function identically. The only difference is
that the six on the left are for individual mics
or mono instruments and have more gain
available, while the next four are for either
stereo or mono line-level sources. (Each of
the stereo channel strips is actually two com-
plete circuits. The controls are linked
together to preserve stereo.) We’ll start at the
bottom and work our way up…

“U” LIKE UNITY GAIN

Mackie mixers have a “

U”

symbol on almost every level
control. This “

U” stands for

“unity gain,” meaning no change in signal level.
Once you have adjusted the input signal to line-
level , you can set every control at “

U” and your

signals will travel through the mixer at optimal
levels. What’s more, all the labels on our level
controls are measured in decibels (dB), so you’ll
know what you’re doing level-wise if you choose
to change a control’s settings.

You won’t have to check it here and check it

there, as you would with some other mixers. In
fact, some don’t even have any reference to ac-
tual dB levels at all! Ever seen those “0–10”
fader markings? We call these AUMs (Arbitrary
Units of Measurement), and they mean noth-
ing in the real world. You were smart — you
bought a Mackie.

FADER

The

FADER controls the channel’s level…

from off to unity gain at the “U” marking, on
up to 10dB of additional gain. Channels 1–6
use mono controls, and channels 7–14 use
stereo controls.

SOLO

This lovable switch allows you to hear signals

through your headphones or control room
without having to route them to the

MAIN or

ALT 3–4 mixes. Folks use solo in live work to
preview channels before they are let into the
mix, or to just check out what a particular chan-
nel is up to anytime during a session. You can
solo as many channels at a time as you like.

Solo is also the key player in the Level

Setting Procedure

.

Your 1402-VLZ

PRO has “Dual-Mode Solo.”

A switch in the master section

determines

which mode you’ll be hearing. With the
switch up, you’ll get “AFL” (After Fader Lis-
ten), which is post-FADER and post-PAN,
making it ideal for mixdown soloing. With the
switch down, you’re in “PFL” (pre-fader lis-
ten) mode. This is the required mode for the
Level Setting Procedure .

Soloed channels are sent to the

SOURCE

mix , which ultimately feeds your

CONTROL

ROOM, PHONES and METERS. Whenever
SOLO is engaged, all SOURCE selections
(

MAIN MIX, ALT 3–4 and TAPE) are defeated,

to allow the soloed signal to do just that — solo!

MUTE/ALT 3–4

The dual-purpose

MUTE/ALT 3–4 switch is

a Mackie signature. When Greg was designing
our first product, he had to include a mute
switch for each channel. Mute switches do just
what they sound like they do. They turn off the
signal by “routing” it into oblivion.

“Gee, what a

waste,” Greg reasoned. “Why not have the
mute button route the signal somewhere else
useful…like a separate stereo bus?”
So
MUTE/ALT 3–4 really serves two functions —
muting (often used during a mixdown or live
show), and signal routing (for multi-track and
live work) where it acts as an extra stereo bus.

To use this as a

MUTE switch, all you have to

do is

not use the

ALT 3–4 outputs. Then, when-

ever you assign a channel to these unused
outputs, you’ll also be disconnecting it from the
MAIN MIX, effectively muting the channel.

To use this as an

ALT 3–4 switch, all you

have to do is connect the

ALT 3–4 outputs to

whatever destination you desire. Two popular
examples:

When doing multitrack recording, use the

ALT 3–4 outputs to feed your multitrack. With
most decks, you can mult the

ALT 3–4 outputs,

using Y-cords or mults, to feed multiple tracks.
So, take

ALT OUT LEFT and send it to tracks 1,

3, 5 and 7, and

ALT OUT RIGHT and send it to

tracks 2, 4, 6 and 8. Now, tracks that are in
Record or Input modes will hear the

ALT 3–4

signals, and tracks in Playback or Safe modes
will ignore them.

When doing live sound or mixdown, it’s often

handy to control the level of several channels
with one knob. That’s called Subgrouping. Sim-
ply assign these channels to the

ALT 3–4 mix,

engage

ALT 3–4 in the SOURCE matrix, and the

signals will appear at the

CONTROL ROOM

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