Mackie 1642-VLZ PRO Manuel du propriétaire télécharger pdf (Page 17)

CHANNEL STRIP DESCRIPTION

A Clean Fade

Faders are not rocket

science — they operate by

dragging a metal pin (the

wiper) across a carbon-

based strip (the track). It is possible for

airborne crud to land on the track. Should that

happen, you may hear scratchy noises or signal

dropouts as the wiper stumbles over the crud.

Do all you can to keep airborne crud out of

your profession. Use air conditioned rooms

whenever possible, avoid smoking near the

mixer, keep food and drink away from the

mixer, and for pity’s sake, never put the mixer

in your kitchen! We also recommend “exercis-

ing” the faders — give them a few full-travel

excursions once a week or so, and that will

help scare the crud away. We do not recom-

mend spray cleaners.

ASSIGN (1–2, 3–4, L/R)

Alongside each channel fader are four but-

tons, labeled

SOLO

1–2

3–4

and

L/R

. The

latter three are collectively referred to as chan-

nel assignment switches.

and

are the left

sides of these stereo pairs, and

and

are

the right sides. Used in conjunction with the

channel’s

PAN

knob , these switches deter-

mine the destination of a channel’s signal:

With the

PAN

knob set at the center detent,

the left and right sides receive equal signal

levels. To feed only one side or the other, just

turn the

PAN

knob accordingly.

If you’re doing a mixdown to a 2-track, simply

engage the

L/R

switch on each channel that you

want to hear, and they’ll be sent to the

MAIN

MIX

. If you want to create a su/jointfilesconvert/312401/bgroup of certain

channels, engage either the

1–2

3–4

switches

instead of the

L/R

, and they’ll be sent to the ap-

propriate su/jointfilesconvert/312401/bgroup faders

. From there, the

su/jointfilesconvert/312401/bgroups can be sent back to the

MAIN MIX

, allowing you to use the su/jointfilesconvert/312401/bgroup faders as a

master control for those channels.

There are eight mono channel strips and

four stereo channel strips. Many of the func-

tions are identical for the mono and stereo

channels. We’ll start at the bottom and work

our way up, pointing out the differences as we

go along.

“U” LIKE UNITY GAIN

Mackie mixers have a “

”

symbol on almost every

level control. This “

”

stands for “unity gain,”

meaning no change in sig-

nal level. Once you have performed the

Level-Setting Procedure

, 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 controls are mea-

sured 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

actual 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 is almost the last control in a

channel’s signal path. It’s placed after the

and

MUTE

controls (post-

/post-

MUTE

and

before the

PAN

control (pre-

PAN

). The “

”

mark, about three-quarters of the way up,

indicates unity gain, meaning no increase or

decrease of signal level. All the way up pro-

vides an additional 10 dB, should you need to

boost a section of a song. If you find that the

overall level is too quiet or too loud with a

fader near unity, you’ll want to confirm the

TRIM

setting by performing the

Level-Setting

Procedure

MUTE

TRIM

LOW CUT

75 Hz

18dB/OCT

+15dB -4 5dB

+15

AUX

PRE

+15

FREQ

800

2k200

8k10 0

MID

PAN

+15

80Hz

LOW

+15-15

+15

12k

SOLO

L/R

REC

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Mackie 1642-VLZ PRO Manuel du propriétaire Page 17

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