Mackie 1642-VLZ PRO Owner`s manual

1642-VLZ PRO
16-CHANNEL
MIC/LINE MIXER
OWNER’S MANUAL
STEREO
PLUG
1642-VLZPRO
FOR USE AS AN EFFECTS LOOP
(TIP = SEND, RING = RETURN)
CAUTION
MONO PLUG
MONO PLUG
INSERT ALL THE WAY IN TO
THE "SECOND CLICK"
TIP OUT TO EFFECTS DEVICE
RING RETURN FROM EFFECTS
16-CHANNEL MIC / LINE MIXER
WITH PREMIUM XDRTM MIC PREAMPLIFIERS
WARNING:
MANUFACTURING DATE
SERIAL NUMBER
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
INSERT ONLY INTO THE
"FIRST CLICK"
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE.
DEBRANCHER AVANT DE REMPLACER LE FUSIBLE
REPLACE WITH THE SAME TYPE FUSE AND RATING.
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
DIRECT OUT WITH NO SIGNAL
INTERRUPTION TO MASTER
DIRECT OUT WITH SIGNAL
INTERRUPTION TO MASTER
XDRTM EXTENDED DYNAMIC RANGE MIC PREAMPLIFIERS ARE PROPRIETARY TO MACKIE DESIGNS, INC.
MAIN OUTS
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA
PATENTS PENDING
COPYRIGHT ©1998 • THE FOLLOWING ARE REGISTERED TRADEMARKS OF
MACKIE DESIGN INC.: "MACKIE", "XDR", AND THE "RUNNING MAN" FIGURE
AUX SENDS
120 VAC 50/60 Hz 40W
1A/250V SLO-BLO
MONO
POWER
ON
DIRECT OUTS
(BAL/UNBAL)
1
(BAL/UNBAL)
8
2
3
4
MAIN
MAIN INSERT
C-R OUTS
7
6
5
4
3
2
1
1
AUX RETURN
(BAL/UNBAL)
2
3
4
L
PHANTOM
ON
(BAL/UNBAL)
+4
MIC
(BAL/UNBAL)
U
SUB OUTS
(BAL/UNBAL)
(BAL/UNBAL)
(TIP SEND
RING RETURN)
1
2
3
4
5
6
7
8
R
MAIN
OUTPUT
LEVEL
+6
LEVEL
OO
L
L
L
L
R
R
R
L
(MONO)
L
(MONO)
R
L
(MONO)
R
(MONO)
R
R
CAUTION:
TO REDUCE THE RISK OF
FIRE REPLACE WITH SAME
TYPE FUSE AND RATING
MIC 1
XD R
MIC 2
MIC PR
E
XD R
MIC 3
MIC PR
E
XD R
MIC 4
MIC PR
E
XD R
MIC 5
MIC PR
E
XD R
MIC 6
MIC PR
E
XD R
MIC 7
MIC PR
E
XD R
MIC 8
MIC PR
E
XD R
MIC 9-10
MIC PR
E
XD R
TAPE
IN
MIC 11-12
MIC PR
E
XD R
MIC PR
E
TAPE
OUT
LAMP
LEFT
LEFT
RIGHT
RIGHT
1642-VLZPRO
16-CHANNEL MIC/ LINE MIXER
WITH PREMIUM XDRTM MIC PREAMPLIFIERS
12V
0.5A
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN 9
LINE IN 11
MONO
BAL
UNBAL
BAL
UNBAL
BAL
UNBAL
INSERT
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
L
INSERT
LINE IN 10
TRIM
-10dBV
IC GAIN
U M
1
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
TRIM
-10dBV
IC GAIN
U M
2
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
-10dBV
IC GAIN
U M
3
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
-10dBV
IC GAIN
U M
4
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
-10dBV
IC GAIN
U M
5
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
-10dBV
IC GAIN
U M
6
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
-10dBV
IC GAIN
U M
7
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
C GAIN
MI
AUX
U
1
AUX
U
1
BAL /
UNBAL
TRIM
9
10
C GAIN
MI
15
16
15
16
U
+20
AUX
U
AUX SEND
EFFECTS TO MONITORS
U
U
1
+10
OO
+15
OO
U
U
2
2
AUX
U
AUX
U
1
U
OO
+10
+20
OO
PRE
PRE
U
PRE
U
3
U
3
+15
OO
4
+15
OO
4
+15
OO
4
+15
OO
4
+15
OO
EQ
U
EQ
U
HI
12k
-15
HI
12k
+15
-15
-15
-15
+15
800
200
2k
100
FREQ
200
8k
2k
100
-15
R
L
1
-20
U
5
1-2
L
OL
-20
3-4
40
50
60
L/R
OO
1
5
1-2
R
3-4
40
50
60
L/R
L
OL
-20
2
dB
10
-15
5
L
-20
3-4
40
50
60
L/R
4
+15
OO
1
-15
5
L
-20
3-4
40
50
60
L/R
+15
OO
2
-15
5
1-2
3-4
40
50
60
L/R
L
OL
-20
3
-15
OO
MAX
dB
10
5
L
-20
3-4
40
50
60
L/R
4
L
1-2
-20
3-4
40
50
60
L/R
5
L
1-2
-20
3-4
40
50
60
L/R
6
5
1-2
OL
-20
3-4
40
50
60
L/R
7
5
L
-20
1-2
3-4
40
50
60
L/R
3-4
40
50
60
L/R
OO
TRACK
8
5
OL
-20
A
30
MAIN MIX
RUDE SOLO LIGHT
LEFT
LEFT
LEFT
LEFT
RIGHT
RIGHT
RIGHT
RIGHT
1
5
2
6
3
7
4
8
MAIN
MIX
dB
dB
10
10
5
5
U
U
5
10
1-2
5
10
10
20
20
30
3-4
30
30
40
50
60
L/R
40
50
60
40
50
60
OO
OO
OO
EFX
NORMAL (AFL)
LEVEL SET (PFL)
SOLO
20
30
20
R
5
1-2
LEVEL
SET
CR SOURCE
+15
U
20
30
dB
10
SOLO
10
7
SUBS 3 – 4
MUTE
OL
4
10
MODE
+15
U
15-16
5
OO
TRACK
dB
10
0
SUBS 1– 2
PAN
R
U
20
30
-15
2
MAX
SOLO
OO
LOW
80Hz
+15
MUTE
SOLO
10
-15
+15
U
4
2
TAPE
LOW
MID
800Hz
13-14
5
OO
TRACK
L
7
+15
U
PAN
R
U
20
30
dB
10
SOLO
10
-15
MUTE
OL
-15
LOW
80Hz
+15
11-12
5
OO
TRACK
5
-15
PAN
R
U
20
30
dB
10
SOLO
10
-15
10
LOW
MID
800Hz
+15
28
TAPE TO
MAIN MIX
OO MAX
CONTROL ROOM
+15
HI
MID
3K
+15
U
LOW
80Hz
+15
MUTE
OL
-15
U
9-10
5
OO
TRACK
5
-15
+15
-15
U
LOW
MID
800Hz
PAN
R
U
20
30
dB
10
SOLO
10
-15
+15
HI
MID
3K
+15
U
LOW
80Hz
+15
8
OL
-15
U
MUTE
5
1-2
-15
8k
-15
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
HI
12k
U
LOW
MID
800Hz
PAN
R
+15
HI
MID
3K
+15
U
LOW
80Hz
+15
-15
RETURNS
SOLO
U
HI
12k
U
FREQ
U
U
OO
TRACK
2k
100
7
20
30
200
8k
MUTE
SOLO
10
FREQ
PAN
R
+15
HI
MID
3K
-15
EQ
U
HI
12k
U
LOW
80Hz
+15
5
OO
TRACK
dB
10
-15
+15
800
U
U
20
30
2k
100
6
SOLO
10
200
8k
MUTE
5
1-2
FREQ
PAN
R
+15
MID
-15
EQ
U
HI
12k
U
LOW
80Hz
+15
OL
-15
+15
800
U
U
OO
TRACK
dB
10
SOLO
20
30
2k
100
5
5
10
200
8k
MUTE
U
1-2
FREQ
PAN
R
+15
MID
-15
EQ
U
HI
12k
U
LOW
80Hz
+15
OL
-15
+15
800
U
4
OO
REC
2k
100
MUTE
20
30
200
PAN
SOLO
10
FREQ
8k
-15
+15
MID
-15
EQ
U
HI
12k
U
LOW
80Hz
+15
5
OO
REC
dB
10
-15
+15
800
U
U
20
30
2k
100
3
SOLO
10
200
8k
MUTE
5
20
FREQ
PAN
R
U
SOLO
5
10
-15
+15
MID
-15
EQ
U
HI
12k
U
LOW
80Hz
+15
2
dB
10
-15
+15
800
U
MUTE
OL
-15
2k
100
PAN
MUTE
5
200
LOW
80Hz
+15
+15
MID
+15
800
U
LOW
80Hz
dB
10
FREQ
8k
PAN
L
-15
EQ
U
HI
12k
U
MID
+15
800
U
-15
-15
U
MID
EQ
U
HI
12k
+15
U
MID
EQ
U
HI
12k
+15
U
-15
EQ
U
C-R / PHNS
ONLY
STEREO AUX RETURN
U
PHONES
EQ
+20
OO
U
4
+15
OO
SOLO
PHAN PWR
+15
OO
U
4
+15
OO
U
+15
OO
U
4
2
3
3
+15
OO
U
1–2
3– 4
MAIN MIX
TO SUBS
U
PRE
U
3
+15
OO
U
+20
OO
+15
OO
PRE
U
3
+15
OO
U
+15
3
1
SOLO
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
PRE
U
3
+15
OO
U
4
PRE
U
3
+15
OO
U
+15
OO
PRE
U
3
+15
OO
U
4
PRE
U
2
2
+15
OO
OO
ASSIGN OPTIONS
+15
OO
U
2
+15
OO
TO AUX
SEND 2
2
2
U
1
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
+15
OO
+15
OO
U
U
+15
OO
TO AUX
SEND 1
1
+20
OO
U
1
U
1
+20
-20
LOW CUT
75 Hz
18dB/OCT
1
B
TRIM
13
14
U
-20
A
RIGHT
TRIM
11
12
60
0
LOW CUT
75 Hz
18dB/OCT
MONO
13
14
60
0
LOW CUT
75 Hz
18dB/OCT
LEFT
BAL /
UNBAL
RIGHT
TRIM
8
PHONES
LEFT
R
60
0
+15dB -45dB
LINE IN
MONO
BAL
UNBAL
LINE IN 12
R
-10dBV
IC GAIN
U M
LINE IN
MONO
L
EFX
B
CAUTION
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC
ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN
ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER
L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU
D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE
A LA PLUIE OU A L'HUMIDITE
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated
"dangerous voltage" within the product's enclosure, that may be
of sufficient magnitude to constitute a risk of electric shock to persons.
Le symbole éclair avec point de flèche à l'intérieur d'un triangle
équilatéral est utilisé pour alerter l'utilisateur de la présence à
l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur
suffisante pour constituer un risque d'éléctrocution.
The exclamation point within an equilateral triangle is intended to
alert the user of the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the appliance.
Le point d'exclamation à l'intérieur d'un triangle équilatéral est
employé pour alerter les utilisateurs de la présence d'instructions
importantes pour le fonctionnement et l'entretien (service) dans le
livret d'instruction accompagnant l'appareil.
SAFETY INSTRUCTIONS
1. Read Instructions — All the safety and operation instructions should be
read before this Mackie product is operated.
2. Retain Instructions — The safety and operating instructions should be kept
for future reference.
3. Heed Warnings — All warnings on this Mackie product and in these operating
instructions should be followed.
4. Follow Instructions — All operating and other instructions should be
followed.
5. Water and Moisture — This Mackie product should not be used near water
– for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, near a swimming pool, swamp or salivating St. Bernard dog, etc.
6. Cleaning — Clean only with a dry cloth.
7. Ventilation — This Mackie product should be situated so that its
location or position does not interfere with its proper ventilation. For
example, the Component should not be situated on a bed, sofa, rug, or
similar surface that may block any ventilation openings, or placed in a
built-in installation such as a bookcase or cabinet that may impede the
flow of air through ventilation openings.
8. Heat — This Mackie product should be situated away from heat sources
such as radiators, or other devices which produce heat.
9. Power Sources — This Mackie product should be connected to a power
supply only of the type described in these operation instructions or as marked
on this Mackie product.
10. Power Cord Protection — Power supply cords should be routed so that
they are not likely to be walked upon or pinched by items placed upon or
against them, paying particular attention to cords at plugs, convenience
receptacles, and the point where they exit this Mackie product.
11. Object and Liquid Entry — Care should be taken so that objects do not
fall on, and liquids are not spilled into, this Mackie product.
12. Damage Requiring Service — This Mackie product should be serviced
only by qualified service personnel when:
A. The power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has spilled into this Mackie
product; or
C. This Mackie product has been exposed to rain; or
D. This Mackie product does not appear to operate normally or
exhibits a marked change in performance; or
E. This Mackie product has been dropped, or its chassis damaged.
13. Servicing — The user should not attempt to service this Mackie product
beyond those means described in this operating manual. All other servicing
should be referred to the Mackie Service Department.
14. To prevent electric shock, do not use this polarized plug with an
extension cord, receptacle or other outlet unless the blades can be fully
inserted to prevent blade exposure.
Pour prévenir les chocs électriques ne pas utiliser cette fiche polariseé avec un
prolongateur, un prise de courant ou une autre sortie de courant, sauf si les
lames peuvent être insérées à fond sans laisser aucune pariie à découvert.
15. Grounding or Polarization — Precautions should be taken so that the
grounding or polarization means of this Mackie product is not defeated.
16. Power Precautions — Unplug this Mackie product during lightning storms
or when unused for long periods of time. Note that this Mackie product is not
completely disconnected from the AC mains service when the power switch is
in the OFF position.
17. This apparatus does not exceed the Class A/Class B (whichever is
applicable) limits for radio noise emissions from digital apparatus as set out in the
radio interference regulations of the Canadian Department of Communications.
ATTENTION —Le présent appareil numérique n’émet pas de bruits
radioélectriques dépassant las limites applicables aux appareils numériques de
class A/de class B (selon le cas) prescrites dans le règlement sur le brouillage
radioélectrique édicté par les ministere des communications du Canada.
18. Exposure to extremely high noise levels may cause permanent hearing
loss. Individuals vary considerably in susceptibility to noise-induced hearing loss,
but nearly everyone will lose some hearing if exposed to sufficiently intense
noise for a period of time. The U.S. Government’s Occupational Safety and
Health Administration (OSHA) has specified the permissible noise level exposures
shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could
result in some hearing loss. To ensure against potentially dangerous exposure to
high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors
while the equipment is in operation. Ear plugs or protectors in the ear canals or
over the ears must be worn when operating the equipment in order to prevent
a permanent hearing loss if exposure is in excess of the limits set forth here.
Duration Per Day
In Hours
8
6
4
3
2
1.5
1
0.5
0.25 or less
Sound Level dBA,
Slow Response
90
92
95
97
100
102
105
110
115
Typical
Example
Duo in small club
Subway Train
Very loud classical music
Tami screaming at Adrian about deadlines
Loudest parts at a rock concert
WARNING — To reduce the risk of fire or electric shock,
do not expose this appliance to rain or moisture.
2
READ THIS PAGE!!!
We realize that you must have a powerful
hankerin’ to try out your new 1642-VLZ PRO.
Or you might be one of those people who
never reads manuals. Either way, all we ask
is that you read this page NOW, and the rest
can wait until you’re good and ready. But do
read it — you’ll be glad you did.
LEVEL-SETTING PROCEDURE
Message to seasoned pros: do NOT set levels
using the old “Turn the trim up until the clip
light comes on, then back off a hair” trick. When a
Mackie Designs mixer clip light comes on, you
really are about to clip.
This procedure really works — it assures
low noise and high headroom. Please read on.
It’s not even necessary to hear what you’re doing to set optimal levels. But if you’d like to: Plug
headphones into the PHONES output jack,
then set the PHONES knob about one-quarter of the way up.
The following steps must be performed one
channel at a time:
1. Turn the TRIM, AUX send and fader
controls fully down.
2. Be sure the 1–2, 3–4 and L/R channel
assignmentswitchesarealldisengaged.
3. Set the EQ knobs at the center detents.
4. Connect the signal source to the MIC or
LINE channel input.
5. Engage (push in) the channel’s SOLO
switch.
6. Push in the MODE switch in the output
section (LEVEL SET (PFL) mode) — the
LEVEL SET LED will light.
7. Play something into the selected input, at
real-world levels.
8. Adjust the TRIM control so that the
display on the meter stays around “0.”
(Only the left meter is active in the
Level-Setting Procedure.)
9. If you’d like to apply some EQ, do so
now and return to the previous step.
10. Disengage that channel’s SOLOswitch.
11. Repeat for each channel.
Other Nuggets of Wisdom
For optimum sonic performance, the channel
faders and the MAIN MIX fader should be set
near the “U” (unity gain) markings.
Always turn down the MAIN MIX fader and
CONTROL ROOM and PHONES knobs before
making connections to your 1642-VLZ PRO.
If you shut down your equipment, turn off
your amplifiers first. When powering up, turn
on your amplifiers last.
Save the shipping box! You may need it
someday, and you don’t want to have to pay for
another one.
INSTANT MIXING
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Here’s how to get going
right away, assuming you own
a microphone and a keyboard:
Plug your microphone into Channel 1’s
MIC input.
Turn on the 1642-VLZ PRO.
Perform the Level-Setting Procedure .
Connect cords from the MAIN OUT jacks
to your amplifier.
Hook up speakers to the amp and turn it on.
Set channel 1’s fader to the “U” mark.
Engage (push in) Channel 1’s L/R switch.
Set the MAIN MIX fader one-quarter of
the way up.
Sing like a canary!
Plug your keyboard into channels 3 and 4.
Turn channel 3’s PAN knob fully left and
channel 4’s PAN knob fully right.
Set those faders to the “U” mark.
Perform the Level-Setting Procedure .
Engage the L/R switch on these channels.
Play like a madman and sing like a canary!
It’s your first mix!
Please write your serial number here for
future reference (i.e., insurance claims,
tech support, return authorization, etc.):
Purchased at:
Date of purchase:
Part No. 0006983-90 Rev. A1 06/03
©2003 Mackie Designs Inc. All Rights Reserved.
3
INTRODUCTION
Thank you for choosing a Mackie Designs
professional compact mixer. The 1642-VLZ PRO
is equipped with our new precision-engineered
XDRTM Extended Dynamic Range premium mic
preamps featuring:
• Full gain range from 0 to 60dB
• +22 dBu line signal handling capability
• 130 dB dynamic range
• Distortion less than 0.0007%, 20Hz to 20kHz
• Bullet-proof RF rejection using DC pulse
transformer circuitry
Now that you have your 1642-VLZ PRO, find
out how to get the most from it. That’s where
this manual comes in.
HOW TO USE THIS MANUAL
Since many of you folks will want to hook up
your 1642-VLZ PRO immediately, the first pages
you will encounter after the table of contents are
the ever popular hookup diagrams. These show
typical mixer setups for Record/Mixdown, Video,
Stereo PA and a fixed installation. After this section is a detailed tour of the entire mixer.
Every feature of the 1642-VLZ PRO will be
described “geographically;” in other words, in
order of where it is physically placed on the
mixer’s top or rear panel. These descriptions are
divided into the first three manual chapters, just
as your mixer is organized into three distinct
zones:
1. PATCHBAY: The zillion jacks along on the
top edge and the rear panel
2. CHANNEL STRIP: The channel strips on
the left.
3. OUTPUT SECTION: The output section on
the right.
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
MIC 6
MIC 7
MIC 8
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC PR
XDR
E
MIC 9-10
TAPE
IN
MIC 11-12
MIC PR
XDR
E
MIC PR
XDR
E
TAPE
OUT
LINE IN
BAL
UNBAL
LINE IN
BAL
UNBAL
BAL
UNBAL
INSERT
INSERT
LINE IN
LINE IN
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
INSERT
LINE IN
LINE IN
LINE IN 9
LEFT
RIGHT
LINE IN 11
PATCHBAY
BAL
UNBAL
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
L
INSERT
TRIM
BV
-10d
IC GAIN
U M
1
60
0
+15dB -45dB
BV
-10d
IC GAIN
U M
2
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
TRIM
BV
-10d
IC GAIN
U M
3
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
BV
-10d
IC GAIN
U M
4
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
BV
-10d
IC GAIN
U M
5
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
BV
-10d
IC GAIN
U M
6
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
BV
-10d
IC GAIN
U M
7
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
BV
-10d
IC GAIN
U M
9
10
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
11
12
15
LEFT
LEFT
BAL /
UNBAL
BAL /
UNBAL
14
13
14
+20
-20
AUX SEND
TRIM
15
16
U
EFFECTS TO MONITORS
U
U
1
+10
OO
AUX
U
1
OO
+10
U
+15
OO
U
+15
OO
+15
OO
+15
EQ
EQ
U
EQ
U
-15
+15
2k
100
FREQ
2k
100
U
200
L
5
-20
U
U
L
L
5
-20
U
dB
10
5
-20
U
SOLO
5
L
5
-20
U
SOLO
5
L
L
5
-20
U
dB
10
5
-20
U
SOLO
5
L
+15
dB
10
L
5
-20
U
5
-20
U
SOLO
5
L
5
-20
U
L
5
-20
U
-15
+15
L
5
-20
U
7
SUBS 3 – 4
LEVEL
SET
20
NORMAL (AFL)
LEVEL SET (PFL)
30
MAIN MIX
SOURCE
RUDE SOLO LIGHT
LEFT
LEFT
LEFT
LEFT
RIGHT
RIGHT
RIGHT
RIGHT
1
5
2
6
3
7
4
8
R
dB
10
OL
5
-20
MAIN
MIX
dB
dB
10
10
5
5
U
U
SOLO
5
4
10
MODE
MUTE
dB
10
2
0
SUBS 1– 2
15-16
OL
SOLO
5
+15
U
2
MAX
SOLO
PAN
R
MUTE
dB
10
-15
4
TAPE TO
MAIN MIX
OO
LOW
80Hz
13-14
OL
SOLO
5
+15
7
TAPE
LOW
MID
800Hz
PAN
R
MUTE
dB
10
-15
28
OUTPUT
SECTION
OO MAX
CONTROL ROOM
HI
MID
3K
+15
U
LOW
80Hz
11-12
OL
SOLO
5
+15
PAN
R
MUTE
dB
10
-15
+15
U
RETURNS
SOLO
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
10
HI
12k
+15
U
-15
LOW
MID
800Hz
-15
MAX
U
-15
HI
MID
3K
LOW
80Hz
9-10
OL
+15
U
PAN
R
8
MUTE
OL
SOLO
5
-15
-15
LOW
80Hz
+15
PAN
R
7
MUTE
OL
+15
U
LOW
80Hz
-15
PAN
R
-15
OO
PHONES
EQ
HI
12k
+15
+15
U
LOW
MID
800Hz
C-R / PHNS
ONLY
STEREO AUX RETURN
U
+15
OO
U
-15
+15
U
+20
OO
U
U
-15
HI
MID
3K
-15
LOW
MID
800Hz
U
+15
+15
U
FREQ
8k
LOW
80Hz
-15
6
dB
10
SOLO
5
U
+15
MUTE
OL
2k
100
EQ
U
-15
HI
MID
3K
+15
U
SOLO
PHAN PWR
+15
OO
4
+15
OO
HI
12k
+15
U
-15
+15
800
200
8k
PAN
R
5
dB
10
2k
100
LOW
80Hz
-15
MUTE
OL
200
EQ
U
-15
HI
MID
3K
FREQ
+15
OO
HI
12k
+15
U
-15
+15
800
U
+15
PAN
R
4
MUTE
FREQ
8k
LOW
80Hz
-15
-15
HI
MID
3K
-15
2k
100
EQ
U
HI
12k
+15
U
200
U
+15
PAN
R
FREQ
8k
LOW
80Hz
3
dB
10
2k
100
EQ
U
-15
HI
MID
3K
+15
800
+15
OO
HI
12k
+15
U
200
8k
-15
OL
-15
-15
+15
OO
HI
12k
+15
+15
800
U
+15
EQ
U
HI
12k
FREQ
+15
4
2
U
3
+15
U
4
1–2
3– 4
MAIN MIX
TO SUBS
U
PRE
U
OO
U
4
+20
OO
+15
OO
PRE
3
+15
OO
SOLO
+15
OO
U
3
+15
U
4
+15
3
1
2
PRE
U
OO
4
OO
HI
MID
3K
-15
2k
100
MUTE
OL
SOLO
5
200
8k
PAN
R
2
EQ
U
-15
U
LOW
80Hz
-15
MUTE
dB
10
FREQ
+15
OO
HI
12k
+15
+15
800
U
+15
+15
HI
MID
3K
-15
2k
100
PAN
R
1
MUTE
EQ
U
-15
U
LOW
80Hz
-15
OL
EQ
+15
800
U
+15
PAN
L
FREQ
8k
LOW
80Hz
-15
+15
OO
PRE
3
+15
U
4
OO
ASSIGN OPTIONS
+15
OO
U
2
+15
OO
U
OO
+15
OO
U
2
PRE
3
+15
U
4
OO
HI
MID
3K
-15
+15
800
200
8k
+15
HI
12k
+15
U
HI
MID
3K
-15
+15
OO
U
OO
U
+15
OO
U
2
PRE
3
+15
OO
4
OO
U
-15
U
200
+15
OO
HI
MID
3K
+15
800
+15
OO
U
3
+15
U
+15
OO
U
2
PRE
U
OO
4
HI
12k
+15
U
+15
OO
PRE
3
+15
U
+15
OO
U
2
CHANNEL STRIPS
+15
HI
12k
-15
-15
+15
OO
U
OO
+15
OO
U
2
PRE
3
+15
U
4
OO
+15
OO
U
OO
U
+15
OO
U
2
PRE
3
+15
OO
4
OO
+15
OO
U
3
+15
U
+15
OO
U
2
PRE
U
OO
4
+15
OO
U
2
PRE
3
+15
OO
U
2
TO AUX
SEND 2
2
+20
OO
1
U
+15
OO
2
+15
OO
U
2
U
TO AUX
SEND 1
1
+20
OO
U
2
AUX
U
1
U
1
+20
-20
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
B
RIGHT
TRIM
U
SOLO
5
5
5
10
10
20
20
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
3-4
30
30
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
L/R
40
50
60
40
50
60
OO
OO
10
1-2
20
OO
10
1-2
20
OO
10
1-2
20
1-2
20
OO
1
10
1-2
20
OO
TRACK
4
10
2
1-2
20
OO
TRACK
10
3
1-2
20
OO
TRACK
10
4
1-2
20
OO
TRACK
10
5
1-2
20
OO
TRACK
10
6
1-2
20
OO
TRACK
10
7
1-2
OO
TRACK
8
10
1-2
20
20
OO
TRACK
10
OO
EFX
A
EFX
B
RACK MOUNTING
A
16
RIGHT
U
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
The Appendix gives details about connectors:
XLR connectors, balanced connectors, unbalanced connectors and special hybrid
connectors.
1642-VLZ PRO
16-CHANNEL MIC/ LINE MIXER
WITH PREMIUM XDRTM MIC PREAMPLIFIERS
PHONES
MONO
13
LINE IN 12
R
BV
-10d
IC GAIN
U M
8
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
TRIM
LINE IN
MONO
BAL
UNBAL
L
LINE IN 10
R
BV
-10d
IC GAIN
U M
LINE IN
A PLUG FOR THE CONNECTORS SECTION
LAMP
LEFT
RIGHT
12V
0.5A
LINE IN
LINE IN
Whenever a specific 1642-VLZ PRO component is mentioned, it’ll be in all capital letters
sans-serif type. That can help you find references to specific controls much faster, without
slowing you down as you read normally. For example: The quick brown fader jumped over the
RUDE SOLO LIGHT.
Throughout these chapters you’ll find illustrations, with each feature numbered. If you’re
curious about a feature, simply locate it on the
appropriate illustration, note the number attached to it, and find that number in the nearby
paragraphs or refer to the table of contents.
You’ll also find cross-references to these numbered features within a paragraph. For instance, if
you see “To wire your own cables: ,” simply find
that number in the manual and you’ve found your
answer. (These are not page numbers.)
You’ll also notice feature numbers just floating in space, like this . These numbers
direct you to relevant information.
This icon marks information
that is critically important or
unique to the 1642-VLZ PRO.
For your own good, read them
and remember them. They will
be on the final test.
This icon will lead you to indepth explanations of features
and practical tips. While not
mandatory, they’ll have some
valuable information.
Optional rack ears are available which allow
the 1642-VLZ PRO to be fitted in a standard 19"
rack. This will take up a height of 12 rack
spaces (including enough room to make the
connections). Contact your Mackie dealer for
more details.
CONTENTS
LEVEL-SETTING PROCEDURE ............................ 3
INSTANT MIXING ............................................ 3
OUTPUT SECTION DESCRIPTION ..................... 22
MAIN MIX FADER .................................. 22
HOOKUP DIAGRAMS ....................................... 6
PATCHBAY DESCRIPTION ............................... 10
VLZ MIX ARCHITECTURE ........................ 22
SUB FADERS .......................................... 22
E-Z INTERFACING .................................. 10
MIC/LINE INPUT FLEXIBILITY ................. 10
ASSIGN TO MAIN MIX ........................... 22
TAPE IN (LEVEL) ..................................... 23
MIC INPUTS .......................................... 10
PHANTOM POWER DISCUSSION ............. 10
TAPE TO MAIN MIX ............................... 23
CR SOURCE ........................................... 23
LINE INPUTS .......................................... 11
TRIM ..................................................... 11
CONTROL ROOM AND PHONES CONTROLS . 23
MODE (NORMAL (AFL)/LEVEL SET (PFL)) .. 24
INSERT .................................................. 11
DIRECT OUT ........................................... 12
LEVEL SET LED ....................................... 24
SOLO (LEVEL) ........................................ 24
RECORDING .......................................... 12
AUX SEND OUTPUTS .............................. 12
RUDE SOLO LIGHT ................................. 24
METERS ................................................. 25
EFFECTS: SERIAL OR PARALLEL? ............. 13
AUX RETURN INPUTS ............................. 13
AUX DISCUSSION .................................. 25
AUX SEND (MASTER) ............................. 25
SUB OUTS ............................................. 13
C-R OUTS (CONTROL ROOM OUTPUTS) .. 14
AUX SENDS SOLO .................................. 26
AUX RETURNS (LEVEL) ........................... 26
PHONES OUTPUT ................................... 14
TAPE OUTPUT ........................................ 14
EFFECTS TO MONITORS .......................... 26
MAIN MIX TO SUBS (AUX RET 3) ........... 26
TAPE INPUT ........................................... 14
MAIN INSERT ........................................ 14
1-2/3-4 (AUX RET 3) ............................ 26
C-R/PHNS ONLY (AUX RET 4) ................ 27
MAIN OUTS ........................................... 14
MONO OUTPUT ..................................... 15
RETURNS SOLO ..................................... 27
1642-VLZ PRO BLOCK DIAGRAM .......................... 28
MONO LEVEL ......................................... 15
POWER CONNECTION ............................ 15
GAIN STRUCTURE DIAGRAM ................................. 29
SPECIFICATIONS ................................................... 30
FUSE ..................................................... 15
POWER SWITCH .................................... 15
SERVICE INFO ....................................................... 31
APPENDIX A: CONNECTIONS ................................. 32
POWER LED ........................................... 16
PHANTOM SWITCH ................................ 16
TRACK SHEET ....................................................... 36
COLOPHON .......................................................... 38
PHANTOM LED ...................................... 16
BNC LAMP SOCKET ................................ 16
1642-VLZ PRO LIMITED WARRANTY ..................... 39
CHANNEL STRIP DESCRIPTION ....................... 17
“U” LIKE UNITY GAIN ............................ 17
FADER ................................................... 17
ASSIGN (1-2, 3-4, L/R) ......................... 17
SOLO .................................................... 18
–20 (SOLO) LED ..................................... 18
OL (MUTE) LED ...................................... 18
MUTE .................................................... 19
PAN ...................................................... 19
3-BAND MID-SWEEP EQ ......................... 19
4-BAND FIXED FREQUENCY EQ ............... 20
LOW CUT............................................... 20
AUX 1, 2, 3, 4 ....................................... 21
PRE ....................................................... 21
5
1
HOOKUP DIAGRAMS
11-12 9-10
Stereo Compressor
2 1
(See the diagram below which
shows how to wire Insert plugs)
BAL/UNBAL
3
4
CHANNEL INPUTS
5
Out
8 Track Recorder
DIRECT OUT
In
CHANNEL INSERTS
2
From Mics, Keys,
Drum machines
etc.
EFX A
3
BAL/UNBAL
4
AUX SENDS
L
R
BAL/UNBAL
C/R OUT
BAL/UNBAL
BAL/UNBAL
Cassette Recorder
SUB OUTS
AUX RETURNS
Stereo Processor
TAPE
OUT
TAPE
IN
MAIN
INSERT
MONO
L
MAIN OUT
R
EFX B
OUT
PHONES
Powered Monitors
Headphones
This is an insert plug, used to send and receive
on the same TRS connector
tip
SEND to processor
ring
sleeve
(TRS plug)
This plug connects to one of the
mixer’s Channel Insert jacks.
1642-VLZ PRO 8-Track Tracking
6
“tip”
“ring”
RETURN from processor
OUT
in
PHONES
BAL/UNBAL
Powered
Monitors
BAL/UNBAL
TAPE
OUT
MAIN
INSERT
MONO
L
R
L
DIRECT OUT
BAL/UNBAL
BAL/UNBAL
R
CD Player
AUX SENDS
BAL/UNBAL
MAIN OUT
CHANNEL INPUTS
Video
Decks
AUX RETURNS
TAPE
IN
Multi-VCR
Video Switcher
C/R OUT
Video
Master
SUB OUTS
CHANNEL INSERTS
Keyboard
Stereo Compressor
Computer
with Audio Card
Headphones
1642-VLZ PRO Video setup
7
Guitar
Drum
Machine
DIRECT OUT
Keyboard
Stereo Effects
Phono preamp
Turntable
Mono EQs, M-1400i Amps,
and (C300) Passive Stage Monitors
BAL/UNBAL
AUX SENDS
BAL/UNBAL
L
R
L
Stereo Processor
AUX RETURNS
TAPE
IN
MAIN
INSERT
MONO
Processor
Processor
TAPE
OUT
Active
PA Speaker/
Subwoofer
combination
(Pole-mounted
SRM450s and
SRS1500 active
Subwoofers
pictured)
MAIN OUT
R
Additional
stereo source
SUB OUTS
C/R OUT
CD Player
BAL/UNBAL
Guitar
Stereo Compressors
CHANNEL INPUTS
Mono Effects
BAL/UNBAL
Bass
CHANNEL INSERTS
Mic 1-5
OUT
PHONES
Digital Multitrack
Recorder
Headphones
1642-VLZ PRO Stereo P.A.
8
CHANNEL INSERTS
Mic 1-5
Direct Box
DIRECT OUT
Drum Machine
CD Player
VCR
Mono EQs, M-1400i Amps,
and (C300) Passive Stage Monitors
BAL/UNBAL
AUX SENDS
L
R
L
BAL/UNBAL
R
Keyboard
MAIN OUT
SRM 450s or other
powered monitors
BAL/UNBAL
CHANNEL INPUTS
Guitar
BAL/UNBAL
BAL/UNBAL
Monitors on distributed system throughout building
AUX RETURNS
OUT
Multitrack Recorder
C/R OUT
Cassette Recorder
SUB OUTS
HR824s or other
powered monitors
Assistive Listening
Transmitter
PHONES
Stereo Processor
70 Volt Line Amp
TAPE
OUT
TAPE
IN
MAIN
INSERT
MONO
Processor
Headphones
1642-VLZ PRO Church Installation
9
PATCHBAY DESCRIPTION
At the risk of stating the obvious, this is
where you plug everything in: microphones,
line-level instruments and effects, and the ultimate destination for your sound: a tape
recorder, PA system, etc. Many of the features
described in this section are on top of the
mixer, but some are on the rear panel.
and noise. You can plug in almost any kind of
mic that has a standard XLR-type male mic
connector. Always be sure to perform the
Level-Setting Procedure . To learn how signals are routed from these inputs: . If you
wire your own, connect them like this:
HOT
E-Z INTERFACING
Concerned about levels,
balancing, impedances, polarity, or other interface
goblins? Don’t be. On your
1642-VLZ PRO, you can patch anything almost
anywhere, with nary a care. Here’s why:
• Every input and output is balanced
(except inserts, phones and RCA jacks).
• Every input and output will also accept
unbalanced lines (except XLR jacks).
• Every input is designed to accept virtually
any output impedance.
• The main left and right mix outputs can
deliver 28dBu into as low as a 600 ohm load.
• All the other outputs can deliver 22dBu
into as low as a 600 ohm load.
• All the outputs are in phase with the inputs.
All we ask is that you perform the Level-Setting
Procedure every time you patch in a new
sound source. So stop worrying and start mixing!
3
MIC 2
MIC 3
MIC PR
E
XD R
MIC 4
MIC PR
E
XD R
MIC 5
MIC PR
E
XD R
MIC 6
MIC PR
E
XD R
MIC 7
MIC PR
E
XD R
MIC 8
MIC PR
E
XD R
Most condenser mics require phantom power,
where the mixer sends low-current DC voltage to
the mic’s electronics through the same wires
that carry audio. The 1642-VLZ PRO’s phantom
power is globally controlled by the PHANTOM
switch on the rear panel .
Semipro condenser mics often have batteries to accomplish the same thing. “Phantom”
owes its name to an ability to be “unseen” by
dynamic mics (Shure® SM57/SM58, for instance) that don’t need external power and
aren’t affected by it anyway.
Unless you know for
certain it is safe to do so,
never plug single-ended
(unbalanced) microphones,
instruments or electronic
devices into the MIC input jacks if the phantom
power is on.
MIC 9-10
MIC PR
E
XD R
TAPE
IN
MIC 11-12
MIC PR
E
XD R
MIC PR
E
LEFT
TAPE
OUT
LAMP
1642-VLZPRO
LEFT
16-CHANNEL MIC/ LINE MIXER
WITH PREMIUM XDRTM MIC PREAMPLIFIERS
12V
0.5A
RIGHT
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN 9
LINE IN 11
MONO
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
BAL
UNBAL
INSERT
LINE IN
LINE IN
PHONES
MONO
BAL
UNBAL
LEFT
LEFT
BAL /
UNBAL
BAL /
UNBAL
LINE IN 12
R
RIGHT
MONO
L
LINE IN 10
R
10
BAL
UNBAL
L
HOT
A WORD ABOUT PHANTOM POWER
We use phantom-powered, balanced microphone inputs just like the big studio megaconsoles, for exactly the same reason: This
kind of circuit is excellent at rejecting hum
XD R
SHIELD
Pin 1 = ground or shield
Pin 2 = positive (+ or hot)
Pin 3 = negative (– or cold)
Professional ribbon, dynamic, and condenser mics will all sound excellent through
these inputs. The 1642-VLZ PRO’s mic inputs
will handle almost any kind of mic level you
can toss at them, without overloading.
MIC INPUTS
MIC PR
E
2
COLD
2
Channels 1-8 are mono channels with MIC
and LINE inputs, featuring our new XDR Extended Dynamic Range mic preamp circuitry.
Channels 9-10 and 11-12 are stereo pairs with
left and right LINE inputs and a single MIC input feeding each pair. Channels 13-14 and
15-16 are stereo pairs with LINE inputs only.
MIC 1
1
COLD 3
HOT
1
1
3
COLD
SHIELD
MIC AND LINE INPUT FLEXIBILITY
XD R
2
SHIELD
13
14
RIGHT
MONO
15
16
RIGHT
A
B
LINE INPUTS
1
These /4" jacks share circuitry (but not
phantom power) with the mic preamps. You
can use these inputs for virtually any signal
you’ll come across, from instrument levels as
low as –50dB to operating levels of –10dBV to
+4dBu, as there is 45dB of gain available via
the TRIM knob .
Note that channels 1-8 line inputs are
intially attenuated by 15dB.
Always be sure to perform the Level-Setting
Procedure .
To learn how signals are routed from these
inputs: . To connect balanced lines to these
inputs, use a 1/4" tip-ring-sleeve (TRS) plug,
the type found on some stereo headphones:
RING SLEEVE
Without this “virtual pad,” a scenario like that
might lead to channel clipping.
The TRIM controls for
stereo channels 9-10 and 1112 are only used to adjust
the Mic inputs. The line inputs are set to unity gain.
The TRIM controls for channels 13-14 and
15-16 only adjust the line level inputs, as they
have no Mic inputs.
-10dBV
IC GAIN
U M
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
U
2
SEND to processor
sleeve
U
3
(TRS plug)
SLEEVE
Tip = positive (+ or hot)
Ring = negative (– or cold)
Sleeve = shield or ground
To connect unbalanced lines to these inputs, use a 1/4" mono (TS) phone plug or
standard instrument cable:
SLEEVE
SLEEVE
TIP
U
4
+15
OO
EQ
U
HI
12k
“tip”
-15
+15
U
This plug connects to one of the
mixer’s Channel Insert jacks.
MID
“ring”
RETURN from processor
-15
Tip = send (to effects device input)
Ring = return (from effects device output)
Sleeve = common ground
Even though channels 1–8 already have
DIRECT OUT jacks , INSERT jacks can also
be used as channel direct outputs; post-TRIM,
pre-LOW CUT, and pre-EQ. Here are three
ways you can use the INSERT jacks:
+15
800
200
2k
100
FREQ
8k
U
LOW
80Hz
-15
+15
PAN
L
R
1
TIP
Tip = signal (+)
Sleeve = ground
+15
OO
RING
TIP
+15
PRE
SLEEVE RING TIP
TIP
+15
OO
OO
These 1/4" jacks are for connecting serial
effects processors such as compressors, equalizers, de-essers, or filters . The INSERT point is
after the TRIM control, but before the channel’s
EQ, LOW CUT, fader and MUTE controls. Insert
cables must be wired thusly:
ring
1
60
0
+15dB -45dB
INSERT
tip
TRIM
MUTE
TIP
SLEEVE
MONO PLUG
Channel Insert jack
TRIM
These controls are the top row of knobs in
the channel strip section. Every time you plug
something into a MIC or LINE input jack, you
should perform the Level-Setting Procedure
, and that procedure is basically “how to use
the TRIM knob.”
TRIM adjusts the input sensitivity of the
MIC and LINE inputs. This allows signals from
the outside world to be adjusted to optimal
internal operating levels.
Through the XLR jack (MIC), there will be
0dB of gain with the knob fully down, ramping
to 60dB of gain fully up.
Through the 1/4" input (LINE), there is 15dB
of attenuation fully down and 45dB of gain fully
up, with a “U” (unity gain) mark at 10:00.
This 15dB of attenuation can be very handy
when you are inserting a signal that is very hot,
or you want to add a lot of EQ gain, or both.
dB
10
OL
5
-20
U
Direct out with no signal interruption.
Insert only to first “click.”
SOLO
5
10
1-2
20
MONO PLUG
30
Channel Insert jack
Direct out with signal interruption.
Insert all the way in to the second “click.”
40
50
60
3-4
L/R
OO
REC
1
STEREO
PLUG
Channel Insert jack
For use as an effects loop.
(TIP = SEND to effect, RING = RETURN from effect.)
11
DIRECT OUT (on rear panel)
Found only on channels 1–8, these 1/4" jacks
deliver the signal from the very end of the
channel path; post-TRIM, post-EQ, post-LOW
CUT, post-fader and post-MUTE. You can use
these for recording, making the 1642-VLZ PRO
perfect for an 8-track studio.
RECORDING
When recording, you use the first two channels for your sound sources: vocal mics, drum
mics, keyboard/synth outputs, guitar effects
outputs, that sort of thing. From there, the
channels manipulate the sound, but are not assigned to the output section. Instead, they’re
patched from the channel’s DIRECT OUT jacks
to any of your 8 multitrack inputs. This allows
recording of two tracks at a time. By reconnecting the Direct Outs to the different tape
inputs, you can record to all of the 8 tracks.
Once the tracking is completed, the outputs
of the multitrack are then patched to channels
3-12 LINE inputs on the 1642-VLZ PRO (multitrack out 1 to LINE input 3, 2 to 4, 3 to 5, etc.).
Aha! That’s why it says “TRACK 1” next to channel 3’s fader, “TRACK 2” next to channel 4, and
so forth. These channels (3–12) will be assigned to the mixer’s output section, delivering
the signals to their ultimate destination, which
may be your mixdown 2-track, your control
room system, or your headphones.
But let’s not forget that the 1642-VLZ PRO is
a 4-bus mixer. These buses lead to the SUB
OUTS , and are designed to accomplish the
task of getting channels to the multitrack without using the direct outputs.
For example, a channel is assigned to
SUB OUT 1. SUB OUT 1’s output is patched to
multitrack input 1. From there, the multitrack
output goes to the mixer’s channel 3 LINE input,
as we just discussed. (Hot tip: To feed an 8track deck with 4 sub outputs, the 1642-VLZ
PRO has double busing, which simply means
that bus 1 feeds SUB OUT 1 and SUB OUT 5,
bus 2 feeds SUB OUT 2 and SUB OUT 6, bus 3
feeds SUB OUT 3 and SUB OUT 7, and bus 4
feeds SUB OUT 4 and SUB OUT 8. Patch the 8
SUB OUTs to the inputs of the 8-track deck.
Tracks in record mode will accept the signal,
and tracks in safe mode will ignore the signal.)
12
The advantages: You can assign any channel
to any track, without repatching. You can assign multiple channels to one track and control
the overall level of that subgroup . You can’t
bounce tracks without this feature.
By returning the outputs of the effects processors to 13/14 (EFX A) and 15/16 (EFX B),
you can choose to record or Monitor with effects.
Perhaps the best recording method is a
combination of both approaches: Use the SUB
OUTS to feed multichannel submixes (like a
drum kit) to some of the tracks, and the
DIRECT OUT jacks to feed single-channel signals (like bass guitar) to the other tracks.
The point is that you never listen directly to
the source channels. You listen to the monitor
channels (3–12) and they’re listening to the multitrack that is listening to the source channels.
The main advantage is that you won’t be forced to
constantly repatch your multitrack — just set it
up and forget it. You’ll also know for certain that
the signals are indeed getting to the multitrack,
since you’re constantly listening to it.
Another method of interfacing a multitrack is
called inline monitoring, and requires a mixing
console dedicated to that, like the Mackie
8•Bus. Each of its channels is actually two channels: one carrying the mic/line sound source and
the other carrying the multitrack output.
AUX SEND OUTPUTS
These 1/4" jacks usually patch to the inputs
of your parallel effects devices or to the inputs of your stage monitor amps. To learn how
signals are routed to these outputs, see the Aux
discussion on page 25.
MAIN OUTS
AUX SENDS
DIRECT OUTS
(BAL/UNBAL)
1
(BAL/UNBAL)
8
2
3
4
MAIN
MAIN INSERT
C-R OUTS
7
6
5
4
3
2
1
1
AUX RETURN
(BAL/UNBAL)
2
3
4
L
MONO
(BAL/UNBAL)
+4
MIC
(BAL/UNBAL)
U
(TIP SEND
RING RETURN)
SUB OUTS
(BAL/UNBAL)
(BAL/UNBAL)
1
2
3
4
5
6
7
8
R
MAIN
OUTPUT
LEVEL
+6
LEVEL
OO
L
L
L
R
R
R
EFFECTS: SERIAL OR PARALLEL?
You’ve heard us carelessly toss around the
terms “serial” and “parallel.” Here’s what we
mean by them:
“Serial” means that the entire signal leaves
the mixer (INSERT send), is routed through the
effects device, and returns to the mixer
(INSERT return). Examples: compressor, limiter, graphic equalizer. Line-level sources can
also be patched through a serial effects device
before or after the mixer.
“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
(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.
AUX RETURN INPUTS
This is where you connect the outputs of your
parallel effects devices (or extra audio sources).
They’ll accept just about any pro or semipro
effects device on the market. See page 26 for
details of the AUX RETURN level controls.
L
L
(MONO)
(MONO)
R
Mono: If you have an effects device with a
mono output (one cord), plug that into L input of an AUX RETURN and leave the right
input unplugged. That way, the signal will be
sent to both sides, magically appearing in the
center as a mono signal.
SUB OUTS
These 1/4" jacks are usually patched to the inputs of a multitrack deck, or to secondary
amplifiers in a complex installation. See page
22 for details of the SUBGROUP FADERS .
Double Busing
How on earth do you get four buses to
feed eight tracks? Double busing!
• Bus 1 feeds SUB OUT 1 and SUB OUT 5,
which in turn feed tracks 1 and 5
• Bus 2 feeds SUB OUT 2 and SUB OUT 6,
which in turn feed tracks 2 and 6
• Bus 3 feeds SUB OUT 3 and SUB OUT 7,
which in turn feed tracks 3 and 7
• Bus 4 feeds SUB OUT 4 and SUB OUT 8,
which in turn feed tracks 4 and 8
Tracks in record mode will accept the signal,
and tracks in safe mode will ignore the signal.
Serial Device (e.g., Compressor)
Parallel Device (e.g., Reverb)
13
L
(MONO)
R
L
(MONO)
R
R
C-R OUTS (CONTROL ROOM OUTPUTS)
1
These /4" jacks are usually patched to the
inputs of your control room amplifier or a
headphone distribution amplifier. See page 23
CONTROL ROOM AND PHONES for details of the signal routing to these outputs.
Mono: If you want to feed a mono signal to
your tape deck or other device, simply use the
1
/4" MONO output jack . Alternatively, use
an RCA Y-cord to combine the TAPE OUTPUT
jacks (Radio Shack® #274-511, for instance).
Do not attempt this with any other outputs on
the 1642-VLZ PRO.
PHONES OUTPUTS
The 1642-VLZ PRO’s stereo 1/4" phones jacks
will drive any standard headphone to very loud
levels. Walkperson-type phones can also be
used with an appropriate adapter. See page 23
CONTROL ROOM AND PHONES for details of the signal routing to these outputs. If
you’re wiring your own cable for the PHONES
output, follow standard conventions:
RING SLEEVE
SLEEVE RING TIP
TIP
RING
Tip = left channel
Ring = right channel
Sleeve = common ground
TIP
SLEEVE
WARNING: When we say
the headphone amp is
loud, we’re not kidding. It
can cause permanent ear
damage. Even intermediate levels may be painfully loud with some
earphones. BE CAREFUL!
Always turn the PHONES knob all the way
down before connecting headphones. Keep it
down until you’ve put the phones on. Then
turn it up slowly. Why? “Engineers who fry
their ears find themselves with short careers.”
TAPE INPUT
These unbalanced RCA jacks are designed
to work with semipro as well as pro recorders.
Connect your 2-track tape recorder’s outputs
here, using standard hi-fi RCA cables. To learn
how signals are routed from these inputs: .
Use these jacks for convenient playback of
your mixes. You’ll be able to review a mix, and
then rewind and try another pass without
repatching or disturbing the mixer levels. You
can also use these jacks with a portable tape
or CD player to feed music to a PA system
between sets .
NOTE: Pushing TAPE TO
MAIN MIX in the output section automatically
disconnects the TAPE OUTPUT from the MAIN OUT
bus. This prevents creating a
feedback loop, which could
create quite a howl in your system (and your
audience!).
MAIN INSERT
These 1/4" jacks are for connecting serial
effects such as compressors, equalizers, deessers, or filters . The INSERT point is after
the mix amps, but before the MAIN MIX fader.
Insert cables must be wired thusly:
TAPE OUTPUT
These unbalanced RCA jacks tap the MAIN
MIX outputs to make simultaneous recording
and PA work more convenient. Connect these
to your 2-track recorder’s inputs. See page 22
MAIN MIX FADER for details of the signal
routing to these outputs.
TAPE
IN
MIC 11-12
XD R
MIC PR
E
LEFT
TAPE
OUT
LAMP
12V
0.5A
LINE IN 11
LINE IN
LINE IN
PHONES
MONO
MONO
L
NL
BAL
UNBAL
LEFT
LEFT
BAL /
UNBAL
BAL /
UNBAL
L
LINE IN 12
R
14
RIGHT
O
13
14
RIGHT
MONO
15
16
RIGHT
SEND to processor
ring
sleeve
(TRS plug)
This plug connects to one of the
mixer’s Channel Insert jacks.
“tip”
“ring”
RETURN from processor
Tip = send (to effects device inputs)
Ring = return (from effects device outputs)
Sleeve = common ground (connect shield to
all three sleeves)
MAIN OUTS
LEFT
RIGHT
tip
A
B
Two sets of jacks are provided for the MAIN
OUTS, 1/4" TRS jacks and XLR jacks. These are
usually patched to the inputs of your 2-track
mixdown deck (unless you’ve chosen to use
the TAPE OUTPUT RCA jacks), or to the house
amplifier during live sound sessions.
In addition, the XLR MAIN OUTS have a
switch to match the signal level to the input of
the device you're connecting them to. Push the
POWER CONNECTION
switch in to reduce the output by 30dB, so you
can feed the mic input of another mixer, for
example. Leave the switch out to connect to
professional +4 dBu devices. To learn how signals are routed to these outputs: .
To use the 1/4" outputs to drive balanced inputs, connect 1/4" TRS (Tip-Ring-Sleeve)
phone plugs like this:
RING SLEEVE
Just in case you lose the cord provided with
the 1642-VLZ PRO, its power jack accepts a
standard 3-prong IEC cord like those found on
most professional recorders, musical instruments, and computers. You can get a new one at
any electronics, music, or computer store. You
can even buy them at Radio Shack® (part #
278-1257).
Plug the 1642-VLZ PRO into any standard
grounded (3-pin) AC outlet or power strip of
the correct voltage.
WARNING: Disconnecting
the plug’s ground pin can
be dangerous. Please
don’t do it.
SLEEVE RING TIP
TIP
RING
TIP
Tip = + (hot)
SLEEVE
Ring = – (cold)
Sleeve = ground
To use these outputs to drive unbalanced
inputs, connect 1/4" TS (Tip-Sleeve) phone
plugs like this:
SLEEVE
Tip = signal
Sleeve = ground
SLEEVE
TIP
FUSE
The 1642-VLZ PRO is fused for your (and
its own) protection. If you suspect a blown
fuse, disconnect the power cord, pull the fuse
drawer out (located just below the cord receptacle) and replace the fuse with a 1A SLO
BLO, 5x20mm, available at electronics stores or
your dealer (or a 0.5A SLO BLO 5x20mm if
your 1642-VLZ PRO is a 220V-240V unit).
TIP
TIP
SLEEVE
MONO OUTPUT
It happens to everybody sooner or later:
The forces that govern your world will demand
a monaural output from your painstakinglycreated stereo panorama. The last thing you
want to do is start twirling all your carefullyplaced PAN settings to one side. What to do?
Stick a cord in this 1/4" jack, hand the other
end to Mr. Mono, and you’re done. He’s got his
mono mix and you’ve still got your stereo mix.
The MONO output is nothing more than a
sum of the left and right MAIN MIX.
POWER SWITCH
You can leave this switch on all the time;
the mixer is conservatively designed, so heat
buildup isn’t a problem even in 24-hour-a-day
operation. This is provided that the mixer receives adequate ventilation. You may notice
that the mixer feels quite warm but there’s
nothing that will burn out or get used up.
Switching to the top " " position turns the
mixer on, by connecting it to main AC power.
This is confirmed by the front panel POWER
LED. Switching to the lower position turns the
mixer into STANDBY, and the LED will turn off.
Note: Turning off the power switch does
not remove all power from the mixer. To remove all power from the mixer, the power cord
must be removed from the AC power source.
MONO LEVEL
If Mr. Mono's main mono mix is maxed, just
reach for this knob and turn it down a bit. Just
the thing for sending mono signals to mic inputs like camcorders, telephone interface
boxes, even answering machines. With the pot
all the way up (fully clockwise), you’ll have
6 dB of extra gain, and unity gain is at the 12
o'clock position.
MAIN OUTS
AUX SENDS
(BAL/UNBAL)
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA
PATENTS PENDING
COPYRIGHT ©1998 • THE FOLLOWING ARE REGISTERED TRADEMARKS OF
MACKIE DESIGN INC.: "MACKIE", "XDR", AND THE "RUNNING MAN" FIGURE
1
PHANTOM
ON
3
4
MONO
MAIN
MAIN INSERT
C-R OUTS
(BAL/UNBAL)
(BAL/UNBAL)
(TIP SEND
RING RETURN)
(BAL/UNBAL)
L
120 VAC 50/60 Hz 40W
1A/250V SLO-BLO
POWER
ON
2
+4
MIC
U
R
MAIN
OUTPUT
LEVEL
+6
LEVEL
OO
L
L
L
R
R
R
CAUTION:
TO REDUCE THE RISK OF
FIRE REPLACE WITH SAME
TYPE FUSE AND RATING
15
POWER LED
AUX SEND
You’ve probably already figured this out, but
if the POWER switch is on, this LED (lightemitting diode), located in the output section,
will light. If the switch is off, well, you get the
idea. If the POWER switch is on and the LED
does not glow, one of three things has happened: Somebody tripped over the power cord
and yanked it from the outlet, your electricity
has been turned off due to nonpayment, or the
fuse has blown .
EFFECTS TO MONITORS
U
U
1
U
1
+10
OO
+20
OO
U
+15
OO
U
U
2
TO AUX
SEND 2
2
2
OO
TO AUX
SEND 1
1
+10
OO
+20
OO
U
+15
ASSIGN OPTIONS
3
1
SOLO
OO
1–2
3– 4
MAIN MIX
TO SUBS
+20
U
4
2
SOLO
OO
PHAN PWR
+20
C-R / PHNS
ONLY
RETURNS
SOLO
STEREO AUX RETURN
PHANTOM SWITCH
,
The PHANTOM switch controls the phantom power supply for condenser microphones as
discussed at the start of this section . When
turned on (or off), the phantom power circuitry
takes a few moments for voltage to ramp up (or
down). This is perfectly normal.
,
120 VAC 50/60 Hz 40W
1A/250V SLO-BLO
POWER
ON
PHANTOM
ON
CAUTION:
PHANTOM LED
TO REDUCE THE RISK OF
FIRE REPLACE WITH SAME
TYPE FUSE AND RATING
Located right next to the POWER LED in the
output section, this is just to let you know which
way you have the PHANTOM switch set. If your
dynamic mics work and your condensers don’t,
chances are this LED is off, so turn it on.
You’ll notice that when you turn the phantom power off, the LED stays on for a while.
This is a natural phenomenon — the LED is
actually a yellow voltmeter telling you that the
phantom power takes time to ramp itself down
to zero volts. So, if you’ve turned phantom
power off to connect something to the mic inputs, wait until the yellow LED stops glowing
and then make your connections safely.
BNC LAMP SOCKET
Located in the top right corner of the output section, this 12V socket will drive any
standard BNC-type lamp (a Littlite® #12G or
#12G-HI (high-intensity), for instance).
TAPE
IN
LEFT
LAMP
1642-VLZPRO
LEFT
16-CHANNEL MIC/ LINE MIXER
WITH PREMIUM XDRTM MIC PREAMPLIFIERS
12V
0.5A
RIGHT
RIGHT
LINE IN
LINE IN
PHONES
MONO
MONO
13
15
LEFT
LEFT
BAL /
UNBAL
BAL /
UNBAL
14
RIGHT
16
TAPE
OUT
16
RIGHT
A
B
CHANNEL STRIP DESCRIPTION
-10dBV
IC GAIN
U M
TRIM
1
60
0
+15dB -45dB
There are eight mono channel strips and
four stereo channel strips. Many of the functions 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 “U”
symbol on almost every
level control. This “U”
stands for “unity gain,”
meaning no change in signal 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 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
actual dB levels at all! Ever seen those “0–10”
fader markings? We call these AUMs (Arbitrary
Units of Measurement), and they mean nothing 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 EQ
and MUTE controls (post-EQ /post-MUTE and
before the PAN control (pre-PAN). The “U”
mark, about three-quarters of the way up,
indicates unity gain, meaning no increase or
decrease of signal level. All the way up provides 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 .
LOW CUT
75 Hz
18dB/OCT
A Clean Fade
AUX
Faders are not rocket
science — they operate by
dragging a metal pin (the
wiper) across a carbonbased 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 “exercising” 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 recommend spray cleaners.
U
1
+15
OO
U
2
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
EQ
U
HI
12k
-15
+15
U
MID
-15
+15
800
200
2k
100
ASSIGN (1–2, 3–4, L/R)
FREQ
8k
U
Alongside each channel fader are four buttons, labeled SOLO, 1–2, 3–4 and L/R. The
latter three are collectively referred to as channel assignment switches. 1, 3 and L are the left
sides of these stereo pairs, and 2, 4 and R are
the right sides. Used in conjunction with the
channel’s PAN knob , these switches determine 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 subgroup of certain
channels, engage either the 1–2 or 3–4 switches
instead of the L/R, and they’ll be sent to the appropriate subgroup faders . From there, the
subgroups can be sent back to the MAIN MIX
, allowing you to use the subgroup faders as a
master control for those channels.
17
LOW
80Hz
-15
+15
PAN
L
R
1
MUTE
dB
10
OL
5
-20
U
SOLO
5
10
1-2
20
30
40
50
60
3-4
L/R
OO
REC
1
-10dBV
TRIM
1
C GAIN
MI
U
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
+15
OO
U
2
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
EQ
U
If you’re printing new tracks or bouncing existing ones, you’ll also use the 1–2 and 3–4
switches, but not the L/R switch. Here, you
don’t want the subgroups sent back into the
MAIN MIX, but sent out, via the SUB OUTS
jacks, to your multitrack inputs . However, if
you’re printing tracks via the DIRECT OUT
jacks , all the channel assignment switches
should be disengaged (up).
The 1642-VLZ PRO is what we call a “true
4-bus mixer.” Each channel can be assigned or
unassigned to any of the subgroups without affecting the other subgroups or settings within
the channel, and each subgroup has its own
master fader and dedicated output . In
fact, since there are 4 subgroups and the MAIN
L/R MIX, it’s actually a true 6-bus mixer. We
could have named it the 1662-VLZ PRO. Darn!
HI
12k
-15
U
MID
-15
+15
800
200
2k
100
FREQ
8k
U
LOW
80Hz
-15
+15
PAN
L
R
1
MUTE
dB
10
OL
5
-20
U
SOLO
5
10
1-2
20
30
40
50
60
SOLO
+15
3-4
L/R
OO
REC
1
This lovable switch allows you to check
signals through your PHONES output or C-R
OUTS without having to assign them to the
L/R, 1-2 or 3-4 mixes. You can solo as many
channels as you like. SOLO does not interrupt
any of the other channels, buses or outputs —
that’s called nondestructive solo. Not only that,
via the MODE switch , the 1642-VLZ PRO’s
solo system comes in two flavors: NORMAL
(AFL) (sometimes called SIP, or solo-in-place)
and LEVEL SET (PFL) (sometimes called PFL,
or pre-fader-listen).
During NORMAL (AFL) mode, the soloed
channel’s signal is sent directly to the C-R OUTS,
PHONES output, and meter display just as it
would sound to the channel’s assignment
switches: post-EQ, post-fader and post-PAN.
The only difference is that SOLO works regardless of the channel’s assignment positions,
and that makes it really handy — you can
check out a channel before you assign it.
NORMAL (AFL) is the preferred mode during
mixdown: If the channel has some midrange
boost at 4.2kHz, is panned a smidgen to the
left, and its fader is at –5dB, that’s exactly
what you’ll hear if you SOLO during NORMAL
(AFL) mode. It’s just as if you took the time to
MUTE all the other channels.
LEVEL SET (PFL) solo is the key player in the
all-important Level-Setting Procedure . It’ll
send the channel’s actual internal levels to the
meters so you’ll know just what’s going on, levelwise. This procedure should be performed every
time a new sound source is patched into a
channel’s MIC or LINE input jacks.
18
LEVEL SET (PFL) is also the preferred mode
for SR (sound reinforcement, or live sound), to
preview channels before they are let into the
mix. It won’t give you stereo placement, but will
give you signal even if the fader is pulled down.
Remember, LEVEL SET (PFL) taps the channel signal before the fader. If you have a
channel’s fader set way below “U” (unity gain),
SOLO won’t know that and will send a unity
gain signal to the C-R OUTS, PHONES output
and meter display. That may result in a startling
level boost at these outputs, depending on the
position of the SOLO level knob .
In a nutshell, soloed channels are sent to
the SOURCE mix , that ultimately feeds your
C-R OUTS, PHONES output and meter display.
Whenever SOLO is engaged, all SOURCE selections (MAIN MIX, 1–2, 3–4 and TAPE) are
defeated, to allow the soloed channel to do just
that — SOLO!
–20 (SOLO) LED
An LED that does two completely different
things! Saves space, but requires some explanation. First, the “–20” part: Often referred to
as “signal activity,” this LED will flicker in time
with the signal present in that channel. It’s
handy for confirming that a channel is indeed
active, and may also lend a clue as to what the
signal is. For instance, a kick drum will cause
the LED to pulse in time with the drum, and a
synth pad will cause it glow a bit more steadily.
Now for the “SOLO” part. When a channel’s
SOLO switch is engaged, this LED will glow
steadily, without flickering. It will also be
brighter than it would be as a –20 indicator. In
conjunction with the RUDE SOLO LIGHT ,
you can find a rogue SOLO switch very quickly.
OL (MUTE) LED
Another LED that does two completely different things! First, the “OL” part: “OL” means
overload, or clip. You don’t want that to happen.
Ever. Clipping can happen to any mixer — it’s
the point where the signal’s voltage exceeds the
supply voltages that power the circuitry. The
1642-VLZ PRO’s OL LED will come on just before clipping, so if you see it, take immediate
action: Perform the Level-Setting Procedure .
If that doesn’t help, check for excessive use of
EQ boost or fader gain. Like the –20 LED, it will
tend to flicker in time with that channel’s signal.
Now for the “MUTE” part. Assuming your
levels are set correctly, the OL LED will never
come on as a result of clipping. That’s pretty
boring. So, to liven things up, this LED will
glow steadily when that channel’s MUTE
switch is engaged.
If you need a quick reference to these LEDs,
write this on the back of your hand:
Name
Color
Flickering
Glowing
–20 (Solo) green signal is present channel is soloed
OL (Mute) red channel is clipping channel is muted
MUTE
Engaging a channel’s MUTE switch provides the same results as turning the fader all
the way down: Any channel assignment to
L/R, 1-2 or 3-4 will be interrupted. All the
post AUX sends will be silenced, as will
the DIRECT OUT signals on channels 1
through 8. And of course, that fun-loving OL
(MUTE) LED will commence to glow. The
PRE AUX sends , channel INSERT send
and SOLO (in LEVEL SET (PFL) mode) will
continue to function during MUTE.
Depending on the audio content in a channel, engaging its MUTE switch may cause a
slight popping sound. This is not a problem
within the mixer, and it can be avoided: Simply engage the LOW CUT switch on each
channel (unless its low frequency content is
vitally important, such as a kick drum or bass
guitar). LOW CUT eliminates subsonic debris, which causes the pop, and its effect is
usually transparent.
PAN
PAN adjusts the amount of channel signal
sent to the left versus the right outputs. Pan determines the fate of the L/R assignment,
subgroups 1–2 and 3–4, and the SOLO (in
NORMAL (AFL) mode). With the PAN knob
hard left, the signal will feed the left MAIN MIX,
subgroup 1, subgroup 3 and left NORMAL
(AFL) solo mode (assuming their assignment
switches are engaged). With the knob hard
right, signal feeds the right MAIN MIX, subgroup 2, subgroup 4 and right NORMAL (AFL)
solo mode. With the PAN knob set somewhere
in-between left and right, the signal will be divided between the left and right buses.
The PAN knob behaves a little differently for
the stereo channel strips. Since there is a left
and right input on these channels, the PAN
knob controls the relative balance between the
left and right sides, just like the balance control on your stereo system at home.
Stereo Sources
Use channels 9-16 to connect stereo sound
sources. If you must use the mono channel
strips (1-8) for stereo sources, follow this standard convention: Always plug the left signal
into an “odd” channel (1, 3, 5, etc.) and the
right signal into the adjacent “even” channel
(2, 4, 6, etc.). Then pan the odd channel hard
left and the even channel hard right.
CONSTANT LOUDNESS ! ! !
The 1642-VLZ PRO’s PAN
controls employ a design
called “Constant Loudness.”
It has nothing to do with
living next to a freeway. As you turn the PAN
knob from left to right (thereby causing the
sound to move from the left to the center to
the right), the sound will appear to remain at
the same volume (or loudness).
If you have a channel panned hard left (or
right) and reading 0 dB, it must dip down
about 4 dB on the left (or right) when panned
center. To do otherwise, like those Brand X
mixers, would make the sound appear much
louder when panned center.
-10dBV
IC GAIN
U M
LOW CUT
75 Hz
18dB/OCT
AUX
+10
+5
0
–5
–10
–15
20Hz
100Hz
1kHz
U
1
10kHz 20kHz
19
+15
OO
U
2
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
EQ
U
HI
12k
-15
+15
U
MID
-15
+15
800
200
2k
100
FREQ
8k
U
LOW
80Hz
-15
+15
1
60
0
+15dB -45dB
3-BAND MID-SWEEP EQ
The 1642-VLZ PRO mono channels have a 3band, mid-sweep equalization: LOW shelving at
80Hz, MID sweep peaking from 100Hz to 8kHz,
and HI shelving at 12kHz. It’s probably all the
EQ you’ll ever need! (Shelving means that the
circuitry boosts or cuts all frequencies past the
specified frequency. For example, the 1642-VLZ
PRO’s LOW EQ boosts bass frequencies starting
at 80Hz and continuing down to the lowest note
you never heard. Peaking means that certain
frequencies form a “hill” around the center frequency.)
The LOW EQ provides up to 15 dB boost or cut
at 80Hz. The circuit is flat (no boost or cut) at the
center detent position. This frequency represents
the punch in bass drums, bass guitar, fat synth
patches, and some really serious male singers.
TRIM
+15
PAN
L
R
1
MUTE
dB
10
OL
5
-20
U
SOLO
5
10
1-2
20
30
40
50
60
3-4
L/R
OO
REC
1
-10dBV
TRIM
1
C GAIN
MI
U
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
AUX
U
1
+15
OO
U
2
+15
OO
PRE
U
Used in conjunction with the LOW CUT
switch , you can boost the LOW EQ without
injecting a ton of subsonic debris into the mix.
We recommend using the LOW CUT feature on
all channels, except low frequency signals, like
kick drums and bass guitars.
The MID EQ , or “midrange,” has a fixed
bandwidth of 1.5 octaves. The MID knob sets
the amount of boost or cut, up to 15 dB, and is
effectively bypassed at the center detent. The
frequency knob sets the center frequency,
sweepable from 100Hz to 8kHz.
+10
+15
OO
U
+5
4
0
+15
OO
–5
EQ
U
–10
HI
12k
-15
–15
+15
20Hz
U
MID
-15
FREQ
8k
–5
–10
+15
PAN
–15
20Hz
R
1
MUTE
dB
10
OL
5
-20
U
SOLO
5
1-2
20
40
50
60
3-4
L/R
OO
REC
1
Mono Channel
The stereo channels (9-16) have a 4-band,
fixed-frequency equalization: LOW shelving at
80Hz, LOW MID peaking at 800Hz, HI MID
peaking at 3kHz, and HI shelving at 12kHz.
Each of these filters provides up to 15 dB of
boost or cut. As with the mono channels, the
circuit is flat (no boost or cut) at the center
detent positions.
LOW CUT
0
LOW
80Hz
L
10kHz 20kHz
+5
U
-15
1kHz
+10
2k
100
100Hz
+15
+15
800
200
30
4-BAND FIXED-FREQUENCY EQ
+15
3
10
With too much EQ, you can screw things up
royally. We’ve designed a lot of boost and cut
into each equalizer circuit because we know
everyone will occasionally need that. But if you
max the EQ on every channel, you’ll get mix
mush. Equalize subtly and use the left sides of
the knobs (cut), as well as the right (boost). If
you find yourself repeatedly using full boost or
cut, consider altering the sound source, such
as placing a mic differently, trying a different
kind of mic, changing the strings, or gargling.
100Hz
1kHz
10kHz 20kHz
Most of the root and lower harmonics that
define a sound are located in the 100Hz–8kHz
frequency range, and you can create drastic
changes with these two knobs. Many engineers
use MID EQ to cut midrange frequencies, not
boost them. One popular trick is to set the MID
fully up, turn the frequency knob until you find
a point where it sounds just terrible, then back
the MID down into the cut range, causing
those terrible frequencies to disappear. Sounds
silly, but it works. Sometimes.
The HI EQ provides you up to 15 dB boost or
cut at 12kHz, and it is also flat at the detent. Use
it to add sizzle to cymbals, an overall sense of
transparency, or an edge to keyboards, vocals, guitar and bacon frying. Turn it down a little to
reduce sibilance or to mask tape hiss.
+15
+10
+5
The LOW CUT switch (not present on
channels 13-16), often referred to as a high
pass filter (all depends on how you look at it),
cuts bass frequencies below 75Hz at a rate of
18 dB per octave. This ain’t no thrown-in
dime-store filter — an 18 dB per octave curve
requires an elaborate circuit. Nothing but the
best for you.
We recommend that you use LOW CUT on every sound source except kick drum, bass guitar,
bassy synth patches, or recordings of earthquakes. These aside, there isn’t much down there
that you want to hear, and filtering it out makes
the low stuff you do want much more crisp and
tasty. Not only that, but low cut can help reduce
the possibility of feedback in live situations, and it
helps to conserve amplifier power.
With LOW CUT, you can safely boost LOW
EQ . Many times, bass shelving eq can really
benefit voices. Trouble is, adding LOW EQ also
boosts the subsonic debris: Stage rumble, mic
handling clunks, wind noise and breath pops.
LOW CUT removes all that debris so you can
boost the LOW EQ without frying your woofer.
Here’s a frequency curve of LOW EQ combined
with LOW CUT:
+15
0
+10
–5
+5
–10
0
–15
20Hz
–5
100Hz
1kHz
10kHz 20kHz
–10
–15
20Hz
20
100Hz
1kHz
10kHz 20kHz
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 or
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 independently 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
TRIM
15
16
U
+20
-20
AUX
U
1
+15
OO
This switch determines the tap point of
AUX 1 and 2. Generally, “post” sends are used
to feed effects devices, and “pre” sends are
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 settings. 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 effect 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.
U
2
+15
OO
PRE
U
3
+15
OO
U
4
+15
OO
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
Pre Vs. Post
dB
10
OL
5
-20
U
SOLO
5
10
1-2
20
30
3-4
40
50
60
L/R
OO
EFX
B
Stereo Channel
21
OUTPUT SECTION DESCRIPTION
AUX SEND
EFFECTS TO MONITORS
U
U
U
1
1
+10
OO
U
+10
+15
OO
U
U
TO AUX
SEND 2
2
2
2
OO
TO AUX
SEND 1
1
+20
OO
+20
OO
U
OO
+15
ASSIGN OPTIONS
3
1
SOLO
+20
OO
1–2
3– 4
MAIN MIX
TO SUBS
U
4
2
SOLO
PHAN PWR
+20
OO
C-R / PHNS
ONLY
You’ve just learned about the
input channels and how the signals get in and out. The signals
come in via MIC and LINE input
jacks, are manipulated by the
channels, and then sent to the
output section. In the output
section, things get a bit more
complicated, so put on your
thinking caps.
RETURNS
SOLO
MAIN MIX FADER
STEREO AUX RETURN
U
OO
MAX
+20
TAPE IN
OO
PHONES
This fader controls the levels of signals sent to the MAIN
OUTPUTS and TAPE OUTPUT RCA jacks . All channels
and AUX RETURNs that are assigned to the MAIN MIX, not
muted and not turned fully
down will appear at the MAIN
OUT. Before the main mix gets
to this fader, the signals pass
through the MAIN INSERT .
The MAIN MIX signals are
off with the fader fully down,
the “U” marking is unity gain,
MAIN
4
MIX
8
and fully up provides 10dB additional gain. This additional
gain will typically never be
needed, but once again, it’s
nice to know it’s there. The
fader itself is a stereo version
of the channel and subgroup
faders — same supersmooth
custom taper, same dead silence when turned fully down.
This is the fader to pull down
at the end of the song when
you want “The Great Fade-Out.”
LEFT RIGHT
0 dB=0 dBu
28
10
7
TAPE TO
MAIN MIX
MAX
CONTROL ROOM
OO
4
2
0
2
TAPE
MAX
SOLO
OO
4
7
SUBS 1– 2
10
MODE
SUBS 3 – 4
NORMAL (AFL)
LEVEL SET (PFL)
MAIN MIX
10
5
U
5
10
20
30
40
50
60
OO
20
30
RUDE SOLO LIGHT
CR SOURCE
dB
LEVEL
SET
LEFT
LEFT
LEFT
LEFT
RIGHT
RIGHT
RIGHT
RIGHT
1
5
2
6
3
7
dB
10
5
U
5
10
20
30
40
50
60
OO
VLZ MIX
ARCHITECTURE
When designing a mixing
circuit, the lowest noise and
best crosstalk specs are
achieved by using Very Low Impedance (VLZ).
To implement VLZ in a mixer, the power supply
must be able to deliver plenty of current to the
circuitry. That’s why those “wall wart” mixers are
often noisy — they can’t power a VLZ circuit.
At Mackie, audio quality is much more important than the price of wall warts. All of our
22
mixers now employ VLZ circuitry and built-in
power supplies that deliver more than enough
current, resulting in sonic specifications that
rival consoles upwards of $50,000!
SUBGROUP FADERS
As you might expect, these faders control the
levels of signals sent to the SUB OUTS. All channels that are assigned to subgroups, not muted
and not turned fully down will appear at the
SUB OUTS. Unlike the MAIN OUT, the subgroup signals do not pass through an insert jack
on their way to the subgroup faders. That’s no
problem — should you want to send these signals through a serial effects processor, simply
patch from the SUB OUTS to the effect’s input,
and from the effect’s output to whatever the final destination is, usually a multitrack recorder.
The subgroup signal is off when its fader is
fully down, the “U” marking is unity gain, and
fully up provides 10dB additional gain. Remember that if you’re treating two subgroups
as a stereo pair, subgroup 1 and 2 for example,
make sure that both subgroup faders “ride”
together, to maintain the left/right balance.
ASSIGN TO MAIN MIX
One popular use of the subgroups is to use
them as master faders for a group of channels
on their way to the MAIN MIX. Let’s say you’ve
got a drum kit hogging up seven channels and
you’re going to want to fade them out at a different rate than the other channels. You don’t want
to try that with seven hands or seven fingers, so
just un-assign these channels from L/R, reassign
them to subgroup 1–2, engage the ASSIGN TO
MAIN MIX, LEFT on subgroup 1 and the ASSIGN TO MAIN MIX, RIGHT on subgroup 2.
Now you can ride the entire stereo drum mix
with two faders — 1 and 2.
If you engage just one ASSIGN TO MAIN
MIX switch per subgroup (LEFT or RIGHT),
the signal sent to the MAIN MIX will be the
same level as the SUB OUTS. If you want the
subgroup to appear in the center of the main
mix, engage both the ASSIGN TO MAIN MIX,
LEFT and ASSIGN TO MAIN MIX, RIGHT
switches. The signal will be sent to both sides,
and will be attenuated just enough to preserve constant loudness, just like the channel
PAN knobs when set in the center.
TAPE IN (LEVEL)
This knob controls the level of the stereo signal
coming from the TAPE INPUT RCA jacks. Its range
is off when fully down, unity at the center detent,
with 20dB additional gain turned fully up, which
may come in handy if you’ve patched in a
“walkperson” type device with wimpy output levels.
After the TAPE IN level is determined, the stereo
tape signal can be sent to either of two places —
the MAIN MIX or the SOURCE matrix .
TAPE TO MAIN MIX
Engaging this switch is just like engaging
the L/R switch on a channel — the signal,
stereo in this case, is sent to the MAIN MIX. It
does not interrupt other signals, just adds itself
to them. This switch can be very handy in a
live sound situation when you want to play
soothing elevator music to an anxious crowd.
CR SOURCE
Typically, the engineer sends the main mix
to an audience (if live) or to a mixdown deck
(if recording). But what if the engineer needs
to hear something other than the main mix?
With the 1642-VLZ PRO, the engineer has several choices of what to listen to. This is one of
those tricky parts — have a double espresso
first.
Via the SOURCE switches, you can choose to
listen to any combination of MAIN MIX, SUBS
1-2, SUBS 3-4 and TAPE. Selections made in the
SOURCE matrix deliver stereo signals to the
C-R OUTS, PHONES output and meter display.
These signals are tapped after their respective
level controls — post-MAIN MIX fader, post
subgroup faders and post-TAPE IN knob. With
no switches engaged, there will be no signal at
these outputs and no meter indication, with two
exceptions (SOLO / and AUX RETURN 4 ).
One of those exceptions is the SOLO function / . Regardless of the SOURCE matrix
selection, engaging a SOLO switch will replace
that selection with the SOLO signal, also sent
to the C-R OUTS, PHONES output and meter
display. This is what makes the Level-Setting
Procedure so easy to do.
Now you know how to select the signals you
want to send to the engineer’s control room
and/or phones. From there, these signals all pass
through two level controls:
CONTROL ROOM AND PHONES
These knobs control the level of the stereo
C-R OUTS and PHONES outputs . Each
control range is from off through unity gain at
the detent, with 10dB of extra gain (when
turned fully clockwise).
When MAIN MIX is your SOURCE selection,
those signals will now pass through two level
controls on the way to your control room amp
and headphones — the MAIN MIX fader and
the CONTROL ROOM and PHONES controls.
This way, you can send a nice healthy level to
the MAIN OUT jacks (MAIN MIX fader at
“U”), and a quieter level to the C-R OUTS or
PHONES (CONTROL ROOM or PHONES
knobs wherever you like).
Whatever your selection, you can also use the
C-R OUTS for other applications. It can be used
as an additional main mix output and this one
will have its own level control. However, should
you do this, be aware that if you engage a SOLO
switch , it will interrupt the mix, as we’ve already covered .
Once again, engaging a SOLO switch will
cause this dramatic turn of events: Any existing
SOURCE matrix selections will be replaced by
the SOLO signals, appearing at the C-R OUTS,
PHONES output and at the meter display. The
audible solo levels are controlled by the SOLO
level knob. The SOLO levels appearing on the
meter display are not controlled by anything
— you wouldn’t want that. You want to see the
actual channel level on the meter display,
regardless of how loud you’re listening.
U
OO
MAX
PHONES
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
28
10
7
MAX
CONTROL ROOM
OO
4
TAPE TO
MAIN MIX
2
0
TAPE
2
MAX
SOLO
OO
4
7
SUBS 1– 2
10
MODE
SUBS 3 – 4
MAIN MIX
CR SOURCE
NORMAL (AFL)
LEVEL SET (PFL)
LEVEL
SET
20
30
RUDE SOLO LIGHT
23
MODE (NORMAL (AFL)/LEVEL SET (PFL))
You may have already seen this in the SOLO
discussion, but in case you missed it: The
1642-VLZ PRO’s solo system comes in two flavors:
U
OO
MAX
PHONES
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
NORMAL (AFL) (sometimes
called SIP, or solo-in-place)
28
10
7
MAX
CONTROL ROOM
OO
4
TAPE TO
MAIN MIX
2
LEVEL SET (PFL) (sometimes
called PFL, or pre-fader-listen)
0
TAPE
2
MAX
SOLO
OO
In NORMAL (AFL), the soloed
channel’s signal is sent directly to
the C-R OUTS, PHONES output
and meter display just as it would
sound to the channel’s assignment switches: post-EQ,
post-fader and post-PAN. The only difference is
that SOLO works regardless of the channel’s assignment positions, and that makes it really
handy — you can check out a channel before
you assign it.
NORMAL (AFL) is the preferred mode during mixdown: If the channel has some
midrange boost at 4.2kHz, is panned a smidgen
to the left, and its fader is at –5dB, that’s exactly what you’ll hear if you SOLO during
NORMAL (AFL) mode. It’s just as if you took
the time to MUTE all the other channels.
LEVEL SET (PFL) solo is the key player in the
all-important Level-Setting Procedure . It’ll
send the channel’s actual internal levels to the
meters so you’ll know just what’s going on, levelwise. This procedure should be performed every
time a new sound source is patched into a
channel’s MIC or LINE input jacks.
LEVEL SET (PFL) is also the preferred mode
for SR (sound reinforcement, or live sound), to
preview channels before they are let into the
mix. It won’t give you stereo placement, but will
give you signal even if the fader is turned down.
Remember, LEVEL SET (PFL) taps the channel signal before the fader. If you have a
channel’s fader set way below “U” (unity gain),
SOLO won’t know that and will send a unity
gain signal to the C-R OUTS, PHONES output
and meter display. That may result in a startling level boost at these outputs, depending
on the position of the SOLO level knob .
4
7
SUBS 1– 2
10
MODE
SUBS 3 – 4
MAIN MIX
CR SOURCE
NORMAL (AFL)
LEVEL SET (PFL)
LEVEL
SET
20
30
RUDE SOLO LIGHT
24
LEVEL SET LED
To quote step 6 of the Level-Setting
Procedure , “Push in the MODE switch in
the output section (LEVEL SET (PFL) mode) —
the LEVEL SET LED will light.” When the solo
MODE switch is engaged, it’s in LEVEL SET
(PFL) mode, the mode you must be in to set
levels. Now, when you engage any solo switch,
this LED will be a “green light” to set levels. If
you tried to set levels during NORMAL (AFL)
mode, the meter display would be at the
mercy of the channel fader, and that would be
a big problem.
SOLO (LEVEL)
This knob controls the level of the signals
coming from the SOLO system. It’s range is off
when fully down, unity at the center detent,
with 10dB additional gain turned fully up. After
the SOLO level is determined, the SOLO signals
will proceed to take over the C-R OUTS,
PHONES output and meter display .
Once again, LEVEL SET (PFL) SOLO taps
the channel signal before the fader. If you
have a channel’s fader set way below “U”
(unity gain), LEVEL SET (PFL) SOLO won’t
know that and will send a unity gain signal to
the C-R OUTS, PHONES output and meter
display. That may result in a startling level
boost at these outputs, depending on the
position of the SOLO level knob.
RUDE SOLO LIGHT
This flashing LED (light emitting diode)
serves two purposes — to remind you that
you’re in SOLO, and to let you know that
you’re mixing on a Mackie. No other company
is so concerned about your level of SOLO
awareness. We even force the soloed channel’s –20 LED to play along, so you can find
that rogue switch fast.
If you work on a mixer that has a SOLO
function with no indicator lights, and you
happen to forget you’re in SOLO, you can easily be tricked into thinking that something is
wrong with your mixer. Hence the RUDE
SOLO LIGHT. It’s especially handy at about
3:00 in the morning, when no sound is coming
out of your monitors, even though your multitrack is playing back like mad.
METERS
AUX DISCUSSION
The 1642-VLZ PRO’s peak metering system is
made up of two columns of twelve LEDs. Deceptively simple, considering the multitude of signals
that can be monitored by it. If nothing is selected
in the SOURCE matrix and no channels are in
SOLO, the meter display will just sit there. To
put them to work, you must make a selection in
the SOURCE matrix (or engage a SOLO switch).
Why? You want the meter display to reflect
what the engineer is listening to, and the engineer is listening either to the C-R OUTS or the
PHONES output. The only difference is that
while the listening levels are controlled by the
CTL ROOM and PHONES knobs, the meter
display reads the SOURCE mix before the controls, giving you the real facts at all times, even
if you’re not listening at all.
When the solo MODE switch is set to LEVEL
SET (PFL) (down) , all soloed signals will be
sent to the left meter only. That, combined
with LEVEL SET LED , are along the path of
enlightenment known as the Level-Setting
Procedure . During NORMAL (AFL) mode,
the meters will behave normally.
Meters vs. Reality
You may already be an
expert at the world of “+4”
(+4dBu=1.23V) and “–10”
(–10dBV=0.32V) operating
levels. Basically, what makes a mixer one or
the other is the relative 0dB VU (or 0VU) chosen for the meter display. A “+4” mixer, with a
+4dBu signal pouring out the back will actually read 0VU on its meter display. A “–10”
mixer, with a –10dBV signal trickling out, will
read, you guessed it, 0VU on its meter display.
So when is 0VU actually 0dBu? Right now!
At the risk of creating another standard,
Mackie’s compact mixers address the need of
both crowds by calling things as they are: 0dBu
(0.775V) at the output shows as 0VU on the
meter display. What could be easier? By the
way, the most wonderful thing about standards
is that there are so many to choose from.
Thanks to the 1642-VLZ PRO’s wide dynamic range, you can get a good mix with
peaks flashing anywhere between –20 and
+10dB on the meter display. Most amplifiers
clip at about +10dB, and some recorders aren’t
so forgiving either. For best real-world results,
try to keep your peaks between “0” and “+7.”
Please remember: Audio meter displays are
just tools to help assure you that your levels
are “in the ballpark.” You don’t have to stare at
them (unless you want to).
First of all, there is no particular alliance
between AUX SEND 1 and AUX RETURN 1.
They’re just numbers. They’re like two complete strangers, both named Fred.
Sends are outputs, returns are inputs. The
AUX knob taps the signal off the channel
and sends it to the AUX SEND outputs .
AUX 1 and 2 are sent to the AUX SENDS 1
and 2 master knobs before the AUX SEND
outputs and AUX 3 through 6 are sent directly.
These outputs are fed to the inputs of a reverb or other device. From there, the outputs of
the external device are fed back to the mixer’s
AUX RETURN inputs . Then these signals are
sent through the AUX RETURN level controls,
and finally delivered to the MAIN MIX .
So, the original “dry” signals come from the
channels to the MAIN MIX and the affected
“wet” signals come from the AUX RETURNS to
the MAIN MIX, and once mixed together, the
dry and wet signals combine to create a glorious sound. Armed with this knowledge, let’s
visit the Auxiliary World:
AUX SENDS (MASTER)
These knobs provide overall level control of
AUX SENDS 1 and 2, just before they’re delivered
to their AUX SEND outputs . This is perfect
for controlling the level of stage monitors, since
you’ll be using AUX 1 and 2 for this, with their
PRE switches engaged . AUX
AUX SEND
SENDS 3 through 6 have no such
1
1
control — they’ll just send their
mixes directly to their respective
AUX SEND outputs at unity gain.
2
2
This knob goes from off (turned
fully down), to unity gain at the
3
1
center detent, with 10dB of extra
gain (turned fully up). As with
some other level controls, you may
4
2
never need the additional gain, but
if you ever do, you’ll be glad you
bought a Mackie.
This is usually the knob you
turn up when the lead singer
glares at you, points at his stage
monitor, and sticks his thumb in
the air. (It would follow suit that if
the singer stuck his thumb down,
you’d turn the knob down, but
–
that never happens.)
EFFECTS TO MONITORS
U
U
+10
OO
TO AUX
SEND 1
U
TO AUX
SEND 2
2
+10
+20
OO
U
+20
OO
OO
+15
ASSIGN OPTIONS
MAIN MIX
TO SUBS
1–2
3– 4
U
SOLO
PHAN PWR
+20
OO
C-R / PHNS
ONLY
RETURNS
SOLO
STEREO AUX RETURN
U
MAX
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
PHONES
28
10
7
4
TAPE TO
MAIN MIX
MAX
CONTROL ROOM
OO
2
0
2
TAPE
MAX
SOLO
OO
4
7
SUBS 1 2
SUBS 3 – 4
+15
OO
U
SOLO
OO
+20
OO
U
OO
U
1
10
MODE
NORMAL (AFL)
LEVEL SET (PFL)
MAIN MIX
LEVEL
SET
20
30
RUDE SOLO LIGHT
CR SOURCE
25
AUX SENDS SOLO
Once again, in a live sound situations AUX
SEND 1 and 2 are likely to feed your stage
monitors. You’ll want to check the mix you’re
sending them, and that’s what these two buttons are for. (AUX 3 through AUX 6 have no
such switch.) Beside each switch is a green
LED that, just like the channel’s –20 LED ,
helps you find the rogue SOLO switch.
The only thing different about AUX SENDS
SOLO is that it’s not really PFL (pre-fader listen), and it’s not really SIP (solo-in-place), it’s
actually AFL (after-fader listen, and yes, we
know there’s no fader in this case.) During
NORMAL (AFL) mode , you’ll get AUX
SEND 1’s solo signal, post-AUX SENDS master
level, in the left side of the C-R OUTS,
PHONES output and meter display, and AUX
SEND 2 on the right side. (If you ever use AUX
1 and 2 to create a stereo monitor mix, you’ll
understand why.) In LEVEL SET (PFL) mode,
you’ll get the signal dead-center, but still postAUX SENDS master level.
AUX RETURNS (LEVEL)
AUX SEND
U
U
+10
OO
U
+20
+10
U
TO AUX
SEND 2
OO
+20
U
3
1
SOLO
+15
OO
U
2
2
OO
U
TO AUX
SEND 1
1
1
OO
These four controls set the overall level of
effects received from the stereo AUX RETURN
input jacks . These controls are designed to
handle a wide range of signal levels — each
knob goes from off, to unity gain at the detent,
to 20dB gain fully clockwise, to compensate for
low-level effects. Signals passing
EFFECTS TO MONITORS
through the STEREO AUX
RETURN level controls will pro1
ceed directly to the MAIN MIX
fader
, with exceptions that
2
we’ll discuss in a moment.
Typically, these knobs can
just live at the center detent,
–
–
and the effects device’s output
control should be set at whatever they call unity gain (check
STEREO AUX RETURN
their manual). If that turns out
to be too loud or too quiet, adjust the effects device’s outputs,
not the mixer. That way, the
mixer’s knobs are easy to
relocate at the center detent.
OO
+20
OO
+15
ASSIGN OPTIONS
MAIN MIX
TO SUBS
1 2
3 4
U
4
2
SOLO
PHAN PWR
OO
+20
C-R / PHNS
ONLY
RETURNS
SOLO
U
OO
MAX
PHONES
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
28
10
7
MAX
CONTROL ROOM
OO
4
TAPE TO
MAIN MIX
2
0
TAPE
2
MAX
SOLO
OO
4
7
SUBS 1– 2
10
MODE
SUBS 3 – 4
LEVEL
SET
NORMAL (AFL)
LEVEL SET (PFL)
20
30
MAIN MIX
RUDE SOLO LIGHT
CR SOURCE
26
EFFECTS TO MONITORS
If you want to add reverb or delay to the
stage monitor mixes, these are the knobs for
you. Operating independently of their respectively numbered AUX RETURNS level controls,
these knobs are exactly the same as the AUX 1
and AUX 2 knobs found in the channel strip .
These two knobs feed AUX RETURN signals
to their respective AUX SEND outputs : TO
AUX SEND 1 feeds AUX RETURN 1 to AUX
SEND 1 master, and TO AUX SEND 2 feeds
AUX RETURN 2 to AUX SEND 2 master. They
are off when turned fully down, deliver unity
gain at the center detent, and can provide up
to 15dB of gain turned fully up. AUX RETURN
3 and AUX RETURN 4 have no such knobs.
MAIN MIX TO SUBS (AUX RET 3)
With this switch up, AUX RETURN 3
behaves like all the others — it delivers a
stereo signal, regulated by its level knob, to the
MAIN MIX . When you engage this switch,
the signals are removed from the MAIN MIX
buses and sent to the 1-2/3-4 switch, which diverts the signal once more. We’re not finished.
Please read on.
1–2/3–4 (AUX RET 3)
As you’ve just read, if the MAIN MIX TO
SUBS switch is disengaged, the 1–2/3–4 switch
does absolutely nothing. Let’s now assume it’s
engaged. AUX RETURN 3’s stereo signal will not
be sent to the MAIN MIX, but to subgroup faders 1 and 2 (1–2/3–4 switch up) or subgroup
faders 3 and 4 (switch down).
Let’s say you’ve made a stereo drum submix on
subgroup faders 1 and 2, so you can ride those
two faders instead of the seven channels that the
drums came from. Subgroup fader 1 has its
ASSIGN TO MAIN MIX, LEFT button engaged
and subgroup fader 2 has its ASSIGN TO MAIN
MIX, RIGHT button engaged, blending the drum
submix back into the MAIN MIX. The drum
channels are also sending signals to your reverb
via the AUX sends and the reverb outputs are
patched into AUX RETURN 3. So far so good.
Even though you could send AUX RETURN 3
directly to the MAIN MIX (MAIN MIX TO SUBS
switch up), you don’t want to. Instead, engage
the MAIN MIX TO SUBS switch and make sure
the 1–2/3–4 switch is up. Now the reverb return
will be blended into the drum submix, and as
you ride those two faders, the reverb level will
follow.
Why do we want that? Because if you had
just sent the reverb directly to the MAIN MIX
(MAIN MIX TO SUBS switch up) and you did a
drum fade-out using subgroup faders 1 and 2,
the “dry” signals would fade out, but the “wet”
signals would keep on singing. All you would
hear is the drum reverb (the “wet”), and none of
the original drum signals (the “dry”). That’s because the reverb is being fed by the channel’s
AUX sends, and they have no idea that you’ve
pulled down the subgroup faders. That’s why we
threw in these switches.
C-R/PHNS ONLY (AUX RET 4)
Once again, the default for all the STEREO
AUX RETURNS is to feed them directly into
the MAIN MIX. You’ve just learned about the
optional exceptions involving AUX RETURN 3.
AUX RETURN 4 also has an optional exception: By engaging the C-R/PHNS switch, you
will remove AUX RETURN 4’s stereo signal
from the MAIN MIX and send it directly to the
CTL ROOM/PHONES SOURCE matrix . It
matters not if any of the SOURCE matrix
switches are assigned, but it will be interrupted, as usual, if a SOLO switch is engaged.
Let’s pretend you’re doing a live mix to a
2-track deck, a house PA, or both, and you
want to play along to a click track. You could
run the click track directly into the MAIN MIX,
but you don’t want the mixdown deck and/or
audience to hear it. By gum, this is the switch
for you. Similarly, it can be used for voice-over
tracks, narration, anything you want heard by
the engineer and players but not by the audience and mixdown deck.
U
RETURNS SOLO
This switch operates just like the channel
SOLO switches — engaging it sends signals to
the C-R OUTS, PHONES output and meter display and interrupts whatever happened to be
there before you soloed. It follows the MODE
switch setting as well. The only difference is
that when you engage the RETURNS SOLO
switch, it sends all four STEREO AUX RETURNS
signals to the SOLO circuit.
Assume you want to solo the snare drum.
Hit that channel’s SOLO switch, and you get
the “dry” (no effects) snare only. That helps,
but you want to hear it with the reverb you
have patched into an AUX RETURN. Leaving
that channel’s SOLO switch engaged, also engage the RETURNS SOLO switch, and now
you’ll get the dry snare and its reverb.
Since it is a global feature, you’ll also get
the signals from all the other AUX RETURNS,
so there may be some sounds that you didn’t
want to hear. If they offend your sensibilities,
simply turn down the levels of the STEREO
AUX RETURNS you don’t want to hear, or
MUTE the channels feeding the unwanted signal to the effects device you do want to hear.
Congratulations! You’ve just read about all
the features of your 1642-VLZ PRO. You’re probably ready for a nice cup of tea. Go ahead. The
rest of the manual can wait.
ASSIGN OPTIONS
3
OO
+20
MAIN MIX
TO SUBS
1–2
3– 4
U
4
OO
+20
C-R / PHNS
ONLY
RETURNS
SOLO
STEREO AUX RETURN
27
28
1
2
3
LOW CUT
75Hz
HPF
MACKIE DESIGNS
1642-VLZ PRO
BLOCK DIAGRAM
(#70699CJM/DF)
MIC TRIM
MIC IN
(Chs 9/10 & 11/12 only)
DIRECT OUT
(CH'S 1 8 ONLY)
3
2
STEREO INPUT CHANNEL
(1 OF 4)
LINE IN R
LINE IN L
MONO INPUT CHANNEL
(1 OF 8)
LINE IN
MIC IN
1
PHANTOM POWER
(GLOBAL SWITCH)
TRIM
AUX RETURN 4
AUX RETURN 3
AUX RETURN 2
AUX RETURN 1
R
L
R
L
R
L
R
L
STEREO TRIM
(Chs 13/14 & 15/16 only)
MID
LO
MID
3K
MID
12K
HI
12K
HI
AUX 4
AUX 3
AUX 2
AUX 1
4-BAND STEREO EQ
80 800
3K
MID
OL (FLICKER)
MUTE (GLOW)
80 800
LO
PRE
–20 (FLICKER)
SOLO (GLOW)
LOW CUT
75Hz
HPF
INSERT
PRE
HI
EFX TO
MON
EFX TO
MON
LEVEL
LEVEL
LEVEL
LEVEL
AUX 2
AUX 1
FREQ
FADER
GAIN
AUX 4
MUTE
MID
EQ
TO SOLO LED
SIP L
SOLO
ASSIGN TO
C-R/PHNS
ONLY
1-2/3-4
PFL
SIP R
4
PFL
3
2
1
R
L
SIP R
SOLO
PAN
ASSIGN
SIP L
PFL
4
SIP R
2
1
R
L
3
SOLO
ASSIGN
SIP L
PAN
MAIN/SUBS
FADER
TO SOLO LED
MUTE
OL (FLICKER)
MUTE (GLOW)
80 100 8K 12K
LO
AUX 3
–20 (FLICKER)
SOLO (GLOW)
FADER
3 4
FADER
SOLO
MAIN INSERT
LEVEL
MACKIE
EXPRESS
R
L
R
L
LEVEL SET
(PFL) LED
SIP/PFL
SOLO LEVEL
AUX MIX
ASSIGN TO MAIN MIX
SUB 2 MIX
1 2
TAPE
MAIN
ASSIGN TO MAIN MIX
SUB 1 MIX
SOLO MIX
SOLO
RELAY
(FROM SUB 4 OUT)
(FROM SUB 3 OUT)
TAPE LEVEL
BUS TO WOODINVILLE
R
TAPE IN
L
ASSIGN
TO MIX
MAIN MIX
C-R/
PHONES
SOURCE
C-R LEVEL
AUX SEND 3
(AUX SEND 4 IDENTICAL)
AUX SEND 1
(AUX SEND 2 IDENTICAL)
SUB 6 OUT
(SUBMIX 4/8 IDENTICAL)
SUB 2 OUT
SUB 5 OUT
(SUBMIX 3/7 IDENTICAL)
22
10
7
4
2
0
2
4
7
10
20
30
METERS
(0VU = 0dBu)
+4/–10dB PAD
(XLR only)
RUDE SOLO LED
PHONES
LEVEL
SUB 1 OUT
C-R/PHONES MIX
MAIN MIX
FADER
MONO LEVEL
R
L
3
2
3
2
1
1
R
L
CONTROL ROOM OUT
PHONES OUT B
PHONES OUT A
TAPE OUT
1/4" BAL
MAIN MIX RIGHT OUT
XLR BAL
XLR BAL
MAIN MIX LEFT OUT
1/4" BAL
MAIN MIX MONO OUT
1642-VLZ PRO BLOCK DIAGRAM
CR/PHN R
CR/PHN L
LOGIC
PFL
SIP R
SIP L
SUB 4
SUB 3
SUB 2
SUB 1
AUX 4
AUX 3
AUX 2
AUX 1
MAIN R
MAIN L
0dB
to ‘A’
to ‘A’ ‘A’
(Insert (Insert
Return)
Send)
0dB
MACKIE 1642-VLZ PRO
LEVEL DIAGRAM
LINE IN, all channels
45dB gain, TRIM up
15dB loss, TRIM down
+22dBu max in
MIC IN, all channels
60dB gain, TRIM up
0dB gain, TRIM down
+22dBu max in
–15dB
down
–15dB
down
SOLO
LEVEL
0dB
+15db up
From ‘B’
EQ
MID
LOW
Channel SEND
TAPE IN
0dB
+20db up
MIX
+10dB up
0dB
to ‘D’
‘D’
0dB
SOURCE Matrix
(from Main Mix,
Subs and Tape In)
FADER
LEVEL
+10dB up
OUTPUT
0dB
+22dBu max out
AUX RETURN
LEVEL
0dB
+20dB up
CONTROL ROOM / PHONES
MIX
INPUT
+22dBu max in
to ‘C’
OUTPUTS
0dB 1/4" Unbal Out
and RCA Tape Out
to ‘D’
+22dBu max out (1/4" unbal & RCA)
+10dB up
+6dB (1/4" bal, Main Mix only)
MAIN MIX & SUBMASTERS
Insert point
(Main Mix only)
–6dB 0dB
+22dBu max out
to ‘C’ ‘C’
AUX 1 & 2 Master OUTPUT
PAN
AUX SEND
LEVEL
0dB
–4dB center
AUX MIX
FADER
‘B’
+10dB up
+15dB up
CHANNEL
–15dB
down
HIGH
+15db up
to ‘D’
+15dB up +15dB up
+28dBu max out (1/4" bal, Main Mix only)
GAIN STRUCTURE DIAGRAM
29
SPECIFICATIONS
Main Mix Noise
Maximum Levels
20Hz–20kHz bandwidth, 1⁄4" Main Out, channel Trims @
unity gain, channel EQs flat, all channels assigned to Main Mix,
odd channels panned left, even channels panned right
Mic in:
All other inputs:
Main Mix 1⁄4" TRS and XLR outputs:
All other outputs:
Main Mix fader unity, channel faders down:
(90dB Signal to Noise Ratio, ref +4dBu)
Main Mix fader @ unity, channel faders @ unity:
–86.5dBu
–84.0dBu
Total Harmonic Distortion (THD)
1kHz @ +14dBu:
Mic in to Insert out:
20Hz–20kHz
below 0.0007%
Attenuation (Crosstalk)
Impedances
Mic in:
Channel Insert return:
All other inputs:
Tape out:
All other outputs:
1.3 kilohms
2.5 kilohms
10 kilohms or greater
1.1 kilohms
120 ohms
3 band EQ (Channels 1 - 8)
1kHz relative to 0dBu, 20Hz–20kHz bandwidth,
Line in, 1⁄4" Main Out, Trim @ unity
Channel Mute switch engaged:
Channel Gain knob down:
+22dBu
+22dBu
+28dBu
+22dBu
–84dBu
–84dBu
Frequency Response
High Shelving:
Mid Peaking:
Low Shelving:
Low Cut Filter:
±15db @ 12kHz
±15dB, sweep 100Hz–8kHz
±15db @ 80Hz
18dB/octave, –3dB @ 75Hz
Mic input to any output
20Hz to 60kHz:
20Hz to 100kHz:
+0dB/–1dB
+0dB/–3dB
Equivalent Input Noise (EIN)
Mic in to Insert Send out, max gain
150 ohm termination:
–129.5dBm unweighted
Common Mode Rejection (CMR)
Mic in to Insert Send out, max gain
1kHz:
4-band EQ (Channels 9 - 16)
High Shelving:
Hi Mid Shelving:
Lo Mid Shelving:
Low Shelving:
Low Cut Filter (Ch9-12):
±15db @ 12kHz
±15dB, 3kHz
±15dB, 800Hz
±15db @ 80Hz
18dB/octave, –3dB @ 75Hz
Power Consumption
120VA.C., 50/60Hz, 40 watts
better than 90dB
Fuse Ratings
120V:
220–240V:
1A Slo Blo, 5 x 20mm
0.5A Slo Blo, 5 x 20mm
Weight
18.2 lbs. (8.3kg)
Rack mounting
16.63" (422mm)
Optional rack ears are available which will allow the
1642-VLZ PRO to be mounted in a standard 19" rack.
Allow ten rack spaces for the unit, and allow two empty
rack spaces on top (for room to plug anything in).
17.28" (439 mm)
5.45" (138mm)
30
1642-VLZ PRO
WEIGHT
18.2 lbs.
(8.3 kg)
SERVICE INFO
Details concerning Warranty Service are
spelled out on the Warranty Card included with
your mixer (if it’s missing, let us know and we’ll
rush one to you).
If you think your 1642-VLZ PRO has a problem, please do everything you can to confirm it
before calling for service. Doing so might save
you from being deprived of your mixer.
Of all Mackie products returned for service
(which is hardly any at all), roughly 50% are
coded “CND” — Could Not Duplicate, which usually means the problem lies somewhere other than
the mixer. These may sound obvious to you, but
here’s some things you can check:
TROUBLESHOOTING
Bad Channel
• Are the channels assigned to the correct
mix (1-2, 3-4, L/R )?
• Is the fader up?
• Try unplugging any insert devices from the
INSERT jacks.
• Try the same source signal in another channel,
set up exactly like the suspect channel.
Bad Output
• Is the associated level control (if any) turned up?
• If you’re listening to the C-R OUTS or
PHONES outputs, has a SOURCE selection
been made?
• If it’s one of the MAIN OUTS, try unplugging its
companion. For example, if it’s the 1/4" LEFT
MAIN OUT, unplug the RCA output. If the
problem goes away, it’s not the mixer.
• If it’s a stereo pair, try switching them
around. For example, if a left output is
presumed dead, switch the left and right
cords, at the mixer end. If the problem stays
on the left, it’s not the mixer.
• Unplug everthing from the MAIN INSERTS.
Noise
• Turn the channel faders and AUX RETURN
knobsdown,onebyone.Ifthesounddisappears,
it’s either that channel or whatever is plugged
into it, so unplug whatever that is. If the noise
disappears,it’sfromyourwhatever.
REPAIR
Service for the U.S. version of the 1642-VLZ PRO
is only available from Mackie Designs, located in
sunny Woodinville, Washington. (Service for mixers living outside the United States can be obtained
through local dealers or distributors.) If your mixer
needs service, follow these instructions:
1. Review the preceding troubleshooting
suggestions. Please.
2. Call Tech Support at 1-800-258-6883, 8am to
5pm PST, to explain the problem and request
an R.A. number. Have your mixer’s serial
number ready. You must have a Return
Authorization number, or we may refuse
the delivery.
3. Set aside the power cord, owner’s manual,
or anything else that you’ll ever want to see
again. We are responsible for the return of
the mixer only.
4. Pack the mixer in its original package,
including endcaps and box. This is VERY
IMPORTANT. When you call for the RA
number, please let Tech Support know if
you need a new box. Mackie is not responsible for any damage that occurs due to
non-factory packaging.
5. Include a legible note stating your name,
shipping address (no P.O. boxes), daytime
phone number, R.A. number and a detailed
description of the problem, including how we
can duplicate it.
6. Write the R.A. number in BIG PRINT on
top of the box.
7. Ship the mixer to us. We suggest insurance
for all forms of cartage. Ship to this address:
Mackie Designs Inc.
SERVICE DEPARTMENT
16220 Wood-Red Rd. NE
Woodinville, WA 98072
8. We’ll try to fix the mixer within five business
days. Ask Tech Support for current turn-around
times when you call for your RA number. We
normally send everything back prepaid using
three-day shipping. However, if you rush your
mixer to us by next-day air, we’ll treat it in kind
by shipping it back in the same way in which it
was received. This paragraph does not
necessarily apply to non-warranty service.
Power
Our favorite question: Is the POWER switch on?
Check the fuse .
31
APPENDIX A: CONNECTIONS
“XLR” CONNECTORS
Mackie mixers use 3-pin female “XLR”
connectors on all microphone inputs, with
pin 1 wired to the grounded (earthed) shield,
pin 2 wired to the “high” (”hot” or positive polarity) side of the audio signal and pin 3
wired to the “low” (“cold” or negative polarity) side of the signal (Figure A). All totally
aboveboard and in full accord with the hallowed standards dictated by the AES (Audio
Engineering Society).
Use a male “XLR”-type connector, usually
found on the nether end of what is called a
“mic cable,” to connect to a female XLR jack.
2
SHIELD
HOT
COLD
SHIELD
COLD 3
HOT
1
3
1
3
1
2
SHIELD
COLD
2
HOT
Figure A: XLR Connectors
1⁄ 4 "
TRS PHONE PLUGS AND JACKS
“TRS” stands for Tip-Ring-Sleeve, the three
connections available on a “stereo” 1⁄4" or
“balanced” phone jack or plug. See Figure B.
TRS jacks and plugs are used in several
different applications:
• Stereo Headphones, and rarely, stereo
microphones and stereo line connections.
When wired for stereo, a 1⁄4" TRS jack or
plug is connected tip to left, ring to right and
RING SLEEVE
sleeve to ground (earth). Mackie mixers do
not directly accept 1-plug-type stereo
microphones. They must be separated into a
left cord and a right cord, which are plugged
into the two mic preamps.
You can cook up your own adapter for a
stereo microphone adapter. “Y” two cables
out of a female 1⁄4" TRS jack to two male
XLR plugs, one for the Right signal and one
for the Left.
• Balanced mono circuits. When wired as a
balanced connector, a 1⁄4" TRS jack or plug
is connected tip to signal high (hot), ring
to signal low (cold), and sleeve to ground
(earth).
• Unbalanced Send/Return circuits. When
wired as send/return “Y” connector, a 1⁄4"
TRS jack or plug is connected tip to signal
send (output from mixer), ring to signal
return (input back into mixer), and sleeve
to ground (earth).
1⁄ 4"
TS PHONE PLUGS AND JACKS
“TS” stands for Tip-Sleeve, the two connections available on a “mono” 1⁄4" phone jack or
plug (Figure C). TS jacks and plugs are used
in many different applications, always unbalanced. The tip is connected to the audio signal
and the sleeve to ground (earth). Some examples:
• Unbalanced microphones
• Electric guitars and electronic instruments
• Unbalanced line-level connections
SLEEVE
SLEEVE RING TIP
TIP
RING
TIP
SLEEVE
SLEEVE
32
TIP
TIP
TIP
Figure B: 1⁄4" TRS Plugs
SLEEVE
Figure C: TS Plug
SWITCHED 1⁄4" PHONE JACKS
Switches can be incorporated into 1⁄4" phone
jacks, which are activated by inserting the plug.
These switches may open an insert loop in a
circuit, change the input routing of the signal or
serve other functions. Mackie uses switches in the
channel insert and bus insert jacks, input jacks
and AUX returns. We also use these switches to
ground the line-level inputs when nothing is
plugged into them.
In most cases, the plug must be inserted
fully to activate the switch. Mackie takes
advantage of this in some circuits, specifying
circumstances where you are to insert the plug
only partially. See Special Mackie
Connections, later in this section.
RCA PLUGS AND JACKS
RCA-type plugs (also known as phono
plugs) and jacks are often used in home stereo
and video equipment and in many other applications (Figure D). They are unbalanced and
electrically identical to a 1⁄4" TS phone plug or
jack (See Figure C). Connect the signal to the
center post and the ground (earth) or shield
to the surrounding “basket.”
SLEEVE TIP SLEEVE TIP
Figure D: RCA Plug
UNBALANCING A LINE
In most studio, stage and sound reinforcement
situations, there is a combination of balanced and
unbalanced inputs and outputs on the various
pieces of equipment. This usually will not be a
problem in making connections.
• When connecting a balanced output to an
unbalanced input, be sure the signal high
(hot) connections are wired to each other,
and that the balanced signal low (cold)
goes to the ground (earth) connection at
the unbalanced input. In most cases, the
balanced ground (earth) will also be
connected to the ground (earth) at the
unbalanced input. If there are ground-loop
problems, this connection may be left
disconnected at the balanced end.
• When connecting an unbalanced output to
a balanced input, be sure that the signal
high (hot) connections are wired to each
other. The unbalanced ground (earth)
connection should be wired to the low
(cold) and the ground (earth) connections of
the balanced input. If there are ground-loop
problems, try connecting the unbalanced
ground (earth) connection only to the input
low (cold) connection, and leaving the input
ground (earth) connection disconnected.
In some cases, you will have to make up special
adapters to interconnect your equipment. For example, you may need a balanced XLR female
connected to an unbalanced 1⁄4" TS phone plug.
SPECIAL MACKIE CONNECTIONS
The balanced-to-unbalanced connection has
been anticipated in the wiring of Mackie jacks.
A 1⁄4" TS plug inserted into a 1⁄4" TRS balanced
input, for example, will automatically unbalance
the input and make all the right connections.
Conversely, a 1⁄4" TRS plug inserted into a 1⁄4"
unbalanced input will automatically tie the ring
(low or cold) to ground (earth).
TRS Send/Receive Insert Jacks
Mackie’s single-jack inserts are the threeconductor, TRS-type 1⁄4" phone. They are
unbalanced, but have both the mixer output
(send) and the mixer input (return) signals in
one connector (See Figure E).
The sleeve is the common ground (earth) for
both signals. The send from the mixer to the
external unit is carried on the tip, and the return
from the unit to the mixer is on the ring.
tip
SEND to processor
ring
sleeve
(TRS plug)
This plug connects to one of the
mixer’s Channel Insert jacks.
“tip”
“ring”
RETURN from processor
Figure E: Insert Plug
33
Using the Send Only on an Insert Jack
If you insert a TS (mono) 1⁄4" plug only partially
(to the first click) into a Mackie insert jack, the
plug will not activate the jack switch and will not
open the insert loop in the circuit (thereby allowing the channel signal to continue on its merry
way through the mixer).
This allows you to tap out the channel or
bus signal at that point in the circuit without
interrupting normal operation.
If you push the 1⁄4" TS plug in to the second
click, you will open the jack switch and create
a direct out, which does interrupt the signal in
that channel. See Figure F.
NOTE: Do not overload or short-circuit the
signal you are tapping
from the mixer. That will
affect the internal signal.
MACKIE STEREO INPUTS AND RETURNS:
Mono, Stereo, Whatever
Stereo line inputs and stereo AUX returns
are a fine example of the Mackie philosophy
(which we just made up) of Maximum Flexibility with Minimum Headache. The inputs
and returns will automatically be mono or stereo, depending upon how you use the jacks.
Here’s how it works:
A mono signal should be patched into the
input or return jack labeled Left (MONO). The
signal will be routed to both the left and right
sides of the return circuit, and will show up in
the center of the stereo pair of buses it’s assigned to, or it can be “panned” with the
Balance control.
A stereo signal, having two plugs, should be
patched into the LEFT (MONO) and the
RIGHT input or return jacks. A jack switch in
the RIGHT jack will disable the mono function, and the signals will show up in stereo.
A mono signal connected to the RIGHT jack
will show up in the right bus only. You probably
will only want to use this sophisticated effect
for special occasions (weddings, bar mitzvahs,
Rush Limbaugh’s birthday party, etc.)
34
MONO PLUG
Channel Insert jack
Direct out with no signal interruption.
Insert only to first “click.”
MONO PLUG
Channel Insert jack
Direct out with signal interruption.
Insert all the way in to the second “click.”
STEREO
PLUG
Channel Insert jack
For use as an effects loop.
(TIP = SEND to effect, RING = RETURN from effect.)
Figure F
MULTS AND “Y”s
A mult or “Y” connector allows you to route
one output to two or more inputs by simply
providing parallel wiring connections. You can
make “Y”s and mults for the outputs of both
unbalanced and balanced circuits.
Remember: Only mult
or “Y” an output into several inputs. If you need
to combine several outputs into one input, you
must use a mixer, not a mult or a “Y.”
RING (IN)
RING (RETURN)
TIP (OUT)
FROM
PROCESSOR
OUTPUT
RING
(RETURN)
TIP
(SEND)
TO MIXER
CHANNEL INSERT
TO
PROCESSOR
INPUT
TIP (SEND)
Y-cord insert cable
Y-cord splitter cable
35
1642-VLZPRO
Session:
Date:
NOTES:
-10dBV
IC GAIN
U M
TRIM
-10dBV
IC GAIN
U M
1
TRIM
TRIM
-10dBV
IC GAIN
U M
4
TRIM
-10dBV
IC GAIN
U M
5
TRIM
-10dBV
IC GAIN
U M
6
TRIM
-10dBV
IC GAIN
U M
7
TRIM
8
60
0
+15dB -45dB
60
0
+15dB -45dB
60
0
+15dB -45dB
60
0
+15dB -45dB
60
0
+15dB -45dB
60
0
+15dB -45dB
60
0
+15dB -45dB
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
LOW CUT
75 Hz
18dB/OCT
AUX
U
AUX
U
1
+15
OO
+15
OO
+15
OO
+15
OO
+15
OO
+15
OO
+15
OO
U
2
+15
OO
+15
OO
U
2
+15
OO
U
1
U
2
+15
OO
AUX
U
1
U
2
+15
OO
AUX
U
1
U
2
+15
OO
AUX
U
1
U
2
+15
OO
AUX
U
1
U
2
AUX
U
1
U
2
+15
OO
+15
OO
PRE
PRE
PRE
PRE
PRE
PRE
PRE
PRE
U
U
U
U
U
U
U
U
3
3
+15
OO
3
+15
OO
U
EQ
EQ
U
EQ
U
HI
12k
-15
+15
-15
-15
200
2k
100
FREQ
200
8k
2k
100
FREQ
200
8k
2k
100
-15
R
L
MUTE
dB
10
OL
5
-20
U
dB
10
OL
5
-20
SOLO
1-2
20
20
3-4
30
L/R
40
50
60
OO
1
OL
5
-20
10
3-4
30
L/R
40
50
60
2
L
5
-20
3-4
30
L/R
40
50
60
L
-20
30
L/R
40
50
60
L
5
-20
3-4
30
L/R
40
50
60
L
MUTE
OL
5
-20
3-4
30
L/R
40
50
60
OL
5
-20
U
SOLO
5
1-2
10
1-2
20
3-4
30
3-4
L/R
40
50
60
L/R
OO
4
dB
10
SOLO
10
R
8
20
TRACK
+15
PAN
R
5
OO
3
-15
U
1-2
8k
LOW
80Hz
+15
dB
10
SOLO
FREQ
U
MUTE
OL
10
100
7
20
TRACK
8k
2k
PAN
R
5
OO
2
-15
U
1-2
200
LOW
80Hz
+15
dB
10
SOLO
FREQ
+15
800
U
MUTE
5
3-4
100
6
20
TRACK
8k
2k
PAN
R
5
OO
1
-15
OL
10
200
LOW
80Hz
+15
U
1-2
FREQ
MID
-15
+15
800
U
dB
10
SOLO
10
100
MUTE
20
TRACK
8k
5
OL
U
MID
-15
2k
PAN
R
5
OO
REC
-15
U
1-2
200
LOW
80Hz
+15
dB
10
SOLO
FREQ
+15
U
+15
800
U
MUTE
20
OO
REC
L
5
1-2
100
4
dB
10
SOLO
10
R
U
5
2k
PAN
MUTE
U
5
-15
3
MUTE
200
8k
PAN
2
FREQ
LOW
80Hz
+15
PAN
L
100
LOW
80Hz
+15
PAN
R
2k
-15
MID
-15
U
HI
12k
+15
U
+15
800
U
LOW
80Hz
1
200
8k
-15
U
-15
MID
+15
OO
EQ
HI
12k
+15
U
+15
800
U
LOW
80Hz
-15
FREQ
U
-15
MID
-15
EQ
HI
12k
+15
U
+15
800
U
+15
-15
MID
-15
U
4
+15
OO
HI
12k
+15
U
+15
800
U
L
-15
MID
-15
U
EQ
HI
12k
+15
U
+15
800
EQ
HI
12k
+15
MID
-15
U
HI
12k
U
-15
EQ
U
4
+15
OO
+15
OO
U
4
+15
OO
3
+15
OO
U
4
+15
OO
3
+15
OO
U
4
+15
OO
3
+15
OO
U
4
+15
OO
3
+15
OO
U
4
+15
OO
3
+15
OO
U
4
40
50
60
-10dBV
IC GAIN
U M
3
LOW CUT
75 Hz
18dB/OCT
1
30
TRIM
60
0
+15dB -45dB
AUX
10
-10dBV
IC GAIN
U M
2
OO
TRACK
5
TRACK
6
TRIM
C GAIN
MI
0
TRIM
9
10
C GAIN
MI
60
0
LOW CUT
75 Hz
18dB/OCT
AUX
11
12
TRIM
13
14
U
60
+20
-20
15
16
AUX
1
EFFECTS TO MONITORS
U
U
1
+10
OO
U
AUX
AUX
U
OO
U
U
+10
+15
OO
U
+20
OO
U
2
+15
+15
OO
SOLO
2
+15
OO
PRE
PRE
U
U
U
3
+15
OO
+15
OO
U
4
EQ
+15
OO
EQ
U
EQ
HI
12k
-15
-15
U
-15
+15
U
-15
-15
R
L
MUTE
L
R
OL
5
-20
U
+15
OL
R
L
5
-20
U
5
-20
U
SOLO
7
10
MODE
+15
U
SUBS 3 – 4
LEVEL
SET
20
NORMAL (AFL)
LEVEL SET (PFL)
30
MAIN MIX
RUDE SOLO LIGHT
CR SOURCE
+15
R
MUTE
OL
4
SUBS 1– 2
15-16
dB
10
MAX
SOLO
OO
PAN
MUTE
dB
10
SOLO
-15
2
0
LOW
80Hz
13-14
MUTE
dB
10
-15
4
2
TAPE
+15
U
PAN
11-12
OO
LOW
MID
800Hz
+15
U
PAN
9-10
-15
LOW
80Hz
+15
PAN
L
-15
7
TAPE TO
MAIN MIX
MAX
CONTROL ROOM
+15
HI
MID
3K
+15
U
LOW
80Hz
+15
-15
LOW
MID
800Hz
+15
U
28
10
U
LOW
MID
800Hz
LOW
80Hz
-15
-15
LEFT RIGHT
0 dB=0 dBu
+20
TAPE IN
OO
U
HI
MID
3K
+15
U
MAX
HI
12k
+15
HI
MID
3K
-15
OO
PHONES
EQ
U
LOW
MID
800Hz
Q
-15
-15
U
+15
U
+15
OO
U
RETURNS
SOLO
U
HI
12k
+15
HI
MID
3K
-15
+15
HI
12k
+15
C-R / PHNS
ONLY
4
OO
U
+20
OO
U
4
+15
OO
SOLO
PHAN PWR
+15
OO
U
4
4
2
STEREO AUX RETURN
+15
OO
1–2
3– 4
MAIN MIX
TO SUBS
U
3
U
+20
OO
+15
OO
PRE
U
3
+15
3
1
PRE
3
OO
ASSIGN OPTIONS
+15
OO
U
2
OO
+15
OO
U
2
TO AUX
SEND 2
2
U
+15
OO
+15
OO
1
1
1
+20
2
U
TO AUX
SEND 1
1
OO
2
U
U
1
+20
-20
LOW CUT
75 Hz
18dB/OCT
U
AUX SEND
TRIM
U
dB
10
OL
5
-20
U
SOLO
SOLO
LEFT
LEFT
LEFT
LEFT
RIGHT
RIGHT
RIGHT
RIGHT
1
5
2
6
3
7
4
8
MAIN
MIX
dB
dB
10
10
5
5
U
U
5
5
5
5
5
5
10
10
10
10
10
10
20
20
1-2
20
30
40
50
60
1-2
20
3-4
30
L/R
40
50
60
OO
3-4
30
L/R
40
50
60
OO
TRACK
7
1-2
3-4
30
L/R
40
50
60
OO
TRACK
8
1-2
20
20
3-4
30
30
L/R
40
50
60
40
50
60
OO
OO
OO
EFX
A
EFX
B
COLOPHON
(Roll credits please) Manual written by Jeff
Gilbert, based on a musical by Ron Koliha, with
tidbits borrowed from almost everywhere. Manual
then defaced with proofreading pens in the hands
of Mackie’s legendary Tech Support staff. Manual
composed on a rinky-dink PC using a low-budget
word processor, then converted to this amazing
piece of work using a 13-story 1000 gigawhopper
Macintosh operated by Mackie’s notorious Advertising staff. Please, feel free to let us know if you
find an error or stumble over a confusing paragraph. Thank you for reading the entire manual
(we know you have, or you wouldn’t be here).
Mackie Designs is always striving to improve our
mixers by incorporating new and improved materials, components and manufacturing methods.
Because we’re always trying to make things better,
we reserve the right to change these specifications
at any time, without notice.
Mackie, the "Running Man" figure, VLZ and XDR are trademarks or registered trademarks of Mackie Designs Inc. All other brand
names mentioned are trademarks or registered trademarks of their respective holders, and are hereby acknowledged.
©2003 Mackie Designs Inc.
All Rights Reserved.
38
1642-VLZ PRO LIMITED WARRANTY
Please keep your sales receipt in a safe place.
A. Mackie warrants all materials, workmanship and
proper operation of this product for a period of three
years from the original date of purchase. If any defects are found in the materials or workmanship or if
the product fails to function properly during the applicable warranty period, Mackie, at its option, will
repair or replace the product. Labor for replacing all
potentiometers and switches is covered for the first
year, after which it is excluded from warranty coverage and may be billed to you. This warranty applies
only to equipment sold and delivered within the
U.S. by Mackie or its authorized dealers.
B. Failure to register online or return the product
registration card will not void the 3-year warranty.
C. Service and repairs of Mackie products are to be
performed only at the factory (see D below) OR at an
Authorized Mackie Service Center (see E below).
Unauthorized service, repairs, or modification will
void this warranty.
D. To obtain factory service:
1. Call Mackie at 800/258-6883, 8AM to 5PM
Monday through Friday (Pacific Time) to get a
Return Authorization (RA). Products returned
without an RA number will be refused.
2. Pack the product in its original shipping carton. If you do not have the carton, just ask for
one when you get your RA number, and we’ll
send a shipping carton out promptly. More information on packing can be found in the Service
section of this manual. Do not use “packing peanuts,” shredded newspapers, or other material
with small particles, old underwear, or socks.
Please seal the Mackie product in a plastic bag.
3. Also include a note explaining exactly how to
duplicate the problem, a copy of the sales receipt
with price and date showing, and your return
street address (no P.O. boxes or route numbers,
please!). If we cannot duplicate the problem at
the Mackie Factory or establish the starting date
of your Limited Warranty, we may, at our option,
charge for service time.
4. Ship the product in its original shipping carton, freight prepaid to:
Mackie Designs
Service Department
16220 Wood-Red Rd. NE
Woodinville, WA 98072 USA
IMPORTANT: Make sure that the RA number is
plainly written on the shipping carton.
E. To obtain service from an Authorized Mackie Service Center:
1. Call Mackie at 800/258-6883, 8AM to 5PM
Monday through Friday (Pacific Time) to get:
1) The name and address of your nearest Mackie
Authorized Service Center and 2) A return authorization (RA). You must have an RA number
before taking your unit to a service center.
2. Make sure that you have a copy of your
product’s sales receipt from the store where you
bought the product. It is necessary to establish
purchase date and thus determine whether or
not your product is still under warranty. If you
can’t find it, the Authorized Service Center may
charge you for repairs even if your product is still
covered by Mackie’s 3-Year Limited Warranty.
3. Make sure that the problem can be duplicated. If you bring your product to an Authorized
Service Center and they can’t find anything
wrong with it, you may be charged a service fee.
4. If the Mackie Authorized Service Center is
located in another city, pack the product in its
original shipping carton. More information on
packing can be found in the Service section of
this manual.
5. Contact the Mackie Authorized Service Center
to arrange service or bring the product to them.
F. Mackie and Mackie Authorized Service Centers
reserve the right to inspect any products that may
be the subject of any warranty claims before repair
or replacement is carried out. Mackie and Mackie
Authorized Service Centers may, at their option, require proof of the original date of purchase in the
form of a dated copy of the original dealer’s invoice
or sales receipt. Final determination of warranty coverage lies solely with Mackie Designs Inc. or its
Authorized Service Centers.
G. Any Mackie product deemed eligible for repair or
replacement under the terms of this warranty will be
repaired or replaced within thirty days of receipt by
Mackie. Mackie may use refurbished parts for repair
or replacement of any product. Products returned to
Mackie that do not meet the terms of this Warranty
will be repaired and returned C.O.D. with billing for
labor, materials, return freight, and insurance. Products repaired under warranty at Mackie’s factory will
be returned freight prepaid by Mackie to any location
within the boundaries of the USA.
H. Mackie warrants all repairs performed for 90 days
or for the remainder of the original warranty period.
Mackie assumes no responsibility for the quality or
timeliness of repairs performed by Mackie Authorized
Service Centers.
I. This warranty is extended to the original purchaser
and to anyone who may subsequently purchase this
product within the applicable warranty period.
J. This is your sole warranty. Mackie does not authorize
any third party, including any dealer or sales representative, to assume any liability on behalf of Mackie
Designs or to make any warranty for Mackie Designs.
K. THE WARRANTY GIVEN ON THIS PAGE IS
THE SOLE WARRANTY GIVEN BY MACKIE AND
IS IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS AND IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. THE
WARRANTY GIVEN ON THIS PAGE SHALL BE
STRICTLY LIMITED IN DURATION TO ONE
YEAR FROM THE DATE OF ORIGINAL PURCHASE FROM AN AUTHORIZED MACKIE
DEALER. UPON EXPIRATION OF THE APPLICABLE WARRANTY PERIOD, MACKIE SHALL
HAVE NO FURTHER WARRANTY OBLIGATION
OF ANY KIND. MACKIE SHALL NOT BE LIABLE
FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES THAT MAY RESULT
FROM ANY DEFECT IN THE MACKIE PRODUCT OR ANY WARRANTY CLAIM. Some states
do not allow exclusion or limitation of incidental,
special, or consequential damages or a limitation
on how long warranties last, so some of the above
limitations and exclusions may not apply to you.
This warranty provides specific legal rights and you
may have other rights which vary from state to state.
39
Mackie Designs Inc.
16220 Wood-Red Road NE • Woodinville, WA 98071 • USA
US and Canada: 800.898.3211
Europe, Asia, Central and South America: 425.487.4333
Middle East and Africa: 31.20.654.4000
Fax: 425.487.4337 • www.mackie.com
E-mail: sales@mackie.com