Mackie CR1604 - VLZ owner manual AUX Talk, AUX Sends Master, Meters vs. Reality

Page 25
SUBS 3–4
MAIN MIX
SOURCE
U
TM
CR1604-VLZ
16-CHANNEL MIC/LINE MIXER

METERS

The CR1604-VLZ’s peak metering system is made up of two columns of twelve LEDs. Decep- tively 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 as we’ve covered, 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 C-R/PHONESknob, the meter display reads the SOURCE mix before that control, 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.

AUX TALK

First of all, there is no particular alliance between AUX SEND 1 and AUX RETURN 1. They’re just numbers. They’re like two com- plete 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 re- verb 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 L-R MIX .

So, the original “dry” signals come from the channels to the MAIN L-R MIX and the af- fected “wet” signals come from the AUX RETURNS to the MAIN L-R MIX, and once mixed together, the dry and wet signals com- bine to create a glorious sound. Armed with this knowledge, let’s visit the Auxiliary World:

AUX SENDS (MASTER)

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

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

SENDS 3 through 6 have no such control — they’ll just send their

mixes directly to their respective

12V

0.5A

LAMP

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 actu- ally 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

AUX SEND outputs at unity gain.

This knob goes from off

1

 

1

 

+10

 

(turned fully down), to unity

OO

 

 

U

 

 

 

 

gain at the center detent, with

2

 

2

10dB of extra gain (turned fully

OO

+10

 

AUX

 

up). As with some other level

 

SENDS

 

 

 

 

controls, you may never need

1

 

3

SOLO

 

the additional gain, but if you

 

2

 

 

ever do, you’ll be glad you

 

 

SOLO

4

 

 

bought a Mackie.

PHAN

PWR

 

 

 

 

U

OO

+20

 

U

OO

+20

 

U

OO

+20

 

U

OO

+20

 

U

 

1

 

TO AUX

 

SEND 1

OO

+15

EFFECTS TO

 

U

MONITORS

2

TO AUX

SEND 2

OO

+15

ASSIGN OPTIONS

 

 

 

 

 

 

 

MAIN MIX

 

1–2

 

TO SUBS

 

 

3–4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C-R / PHNS

RETURNS

 

ONLY

 

SOLO

is that there are so many to choose from.

This is usually the knob you

STEREO AUX RETURNS

Thanks to the CR1604-VLZ’s wide dynamic range, you can get a good mix with peaks flash- ing 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

turn up when the lead singer

glares at you, points at his stage

OO MAX

monitor, and sticks his thumb in

C-R / PHONES

 

 

 

the air. (It would follow suit that

 

 

 

 

TAPE

if the singer stuck his thumb

 

 

 

 

 

 

 

down, you’d turn the knob

 

 

 

SUBS 1–2

 

 

 

down, but that never happens.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U

OO

+20

TAPE IN

TAPE TO

MAIN MIX

OO MAX

SOLO

MODE

LEFT RIGHT

0 dB=0 dBu

CLIP

28

10

7

4

2

0

2

4

LEVEL 7

SET

10

20

30

are “in the ballpark.” You don’t have to stare at them (unless you want to).

NORMAL (AFL)

RUDE

LEVEL SET (PFL)

SOLO

 

LIGHT

25

Image 25
Contents MIC/LINE Mixer Safety Instructions Read this LEVEL-SETTING ProcedureInstant Mixing Other Nuggets of WisdomPlug for the Connectors Section HOW to USE this ManualIntroduction Arcane Mysteries IlluminatedContents Hookup Diagrams Stereo EQ Video Setup Switching Positions Converting to Rackmount ModePatchbay Description Phantom PowerInterface MIC InputsTrim Line InputsInsert Direct OUTAUX Send Outputs Split MonitoringOutputs of the multitrack are then SUB Outs AUX Return InputsTape Output Phones OutputTape Input Main Insert Power ConnectionMain Outs Mono OutputPower LED Power SwitchPhantom Switch Phantom LEDChannel Strip Description Clean FadeFader Assign 1-2, 3-4, L-RSolo LED SoloOL Mute LED During Normal AFL mode, the soloedPAN MuteStereo Sources Constant LoudnessAUX 1, 2, 3 LOW CUTShift PREVLZ MIX Architecture Output Section DescriptionSubgroup Faders Assign to Main MIXTape to Main MIX Tape in LevelSource PhonesLevel SET LED Ment switches post-EQSolo Level Rude Solo LightAUX Talk MetersAUX Sends Master Meters vs. RealityAUX Returns Level AUX Sends SoloEffects to Monitors Main MIX to Subs AUX RETReturns Solo Phns only AUX RETMackie Disclaimer UL WarningAbout Jumpers Place the mixer upside-down on a dry, non- marring surfaceCR1604-VLZ Source Mod OL Flicker CR1604-VLZ Block DiagramLOW MID High GainSpecifications Troubleshooting Service InfoRepair Assign ChorusingAttenuate AuxConsole DelayCueing DBmEffects devices EchoEQ curve EqualizationGain stage GainGraphic EQ GroundKnee Input moduleLevel Line levelPan, pan pot Phantom powerParametric EQ PeakingRCA phono plug RCA phono jack-orRCA jack or phono jackRegeneration ReturnXLR connector VolumeStereo Sweep EQAppendix B Connections XLR Connectors⁄4 TS Phone Plugs and Jacks ⁄4 TRS Phone Plugs and JacksRCA Plugs and Jacks Switched 1⁄4 Phone JacksUnbalancing a Line Special Mackie ConnectionsTRS Send/Receive Insert Jacks Using the Send Only on an Insert JackMults and Ys Balanced Lines DON’T Phantom Power do & DON’T ChartDon’t use hardware-store light dimmers Do’s and Don’ts of Fixed InstallationsHere are some guidelines Free T-SHIRT OfferSession Date CR1604-VLZ0.5A