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VLZ4 4•Bus

Channel Controls

The vertical channel strips look very similar, and

have only a few differences between them. Each

channel works independently, and just controls the
signals plugged into the inputs directly behind it.

“U” like Unity gain

VLZ4 mixers have a “U” symbol on almost every level

control. It stands for “unity gain,” meaning no change in
signal level. The labels on the 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.

23. Gain Control

If you haven’t already, please read the getting started

section on page 6.

The gain knobs adjust the input sensitivity of the mic

and line inputs. This allows signals from the outside
world to be adjusted to run through each channel at
optimal internal operating levels.

If the signal originates through the mic XLR jack,

there will be 0 dB of gain with the knob fully down,
ramping to 60 dB of gain fully up.

Through the 1⁄4" line input of channels 1-20

(2404VLZ4) and channels 1-28 (3204VLZ4), there is 20
dB of attenuation fully down and 40 dB of gain fully up,
with unity gain “U” at 10:00.

Through the 1⁄4" line input of channels 21/22 and

23/24 (2404VLZ4) and 29/30 and 31/32 (3204VLZ4),
there is 20 dB of attenuation fully down and 20 dB of
gain fully up, with unity gain “U” at 12:00.

This 20 dB of attenuation can be very handy when you

are inserting a hot signal, or when you want to add EQ
gain, or both. Without this “virtual pad,” there is more
chance of channel clipping.

24. Low Cut

All mono channels have a low-cut switch (often

referred to as a high-pass filter) that cuts bass
frequencies below 100 Hz at a rate of 18 dB per octave.

We recommend that you use low-cut on every

microphone application except kick drum, bass guitar,
or bassy synth patches. 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.

Another way to consider low-cut’s function

is that it actually adds flexibility during live
performances. With the addition of low-cut,

you can safely use low equalization on vocals. Many
times, bass shelving EQ can really benefit voices.
Trouble is, adding low EQ also boosts stage rumble,

mic handling clunks and breath pops from way-down
low. Applying low-cut removes all those problems,

so you can add low EQ without blowing your subwoofers.

25. Pad (-20 dB) Switch

In most cases, the pad switch will be disengaged.

However, microphones and balanced line-level signals
that produce a higher output than usual may require
that the gain control [23] is turned way down. If this is
the case, engage the pad switch to allow an additional
20 dB at the input to the mic preamp. This prevents
overloading the microphone preamp and provides better
gain control. The pad only applies to XLR inputs, not the
1/4" TRS inputs.

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

PAN

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

MID

200

800

100

FREQ

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

PAD

-20dB

LOW CUT

100 Hz

GAIN

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

SUBGROUPS

PUSH

TO TALK

MAIN

RIGHT

AUX 1-4

SOLO

STEREO

LEFT

RIGHT

SOLO

LEFT

RIGHT

SOLO

STEREO

LEFT

RIGHT

SOLO

LEFT

MAIN MIX

TALKBACK

OFF

MAX

COMP

OFF

MAX

COMP

OFF

MAX

COMP

OFF

MAX

COMP

LEVEL

PHONES

TO AUX 1

TO AUX 2

SOLO

MONITOR

TAP

DELAY

MUTE

TO AUX 1

TO AUX 2

TAP

DELAY

MUTE

FX MASTER

TO LR

SIG/OL

SOLO

SOLO MODE

SOLO

PFL

AFL

AUX

CH 1-2

CH 3-4

AUX 5-6

PWR

RUDE SOLO

48V

USB OUT

SUBS 3-4

LEVEL

SET

SUBS 1-2

MAIN

TO LR

TAPE

USB

2-TRACK RETURN

SUCK

SOLO

12V

0.5A

OFF

MAX

COMP

OFF

MAX

COMP

OFF

MAX

COMP

OFF

MAX

COMP

LOW CUT

100 Hz

LOW CUT

100 Hz

LOW CUT

100 Hz

LOW CUT

100 Hz

FX 1

FX 2

USB

12k

MID

2.5k

LOW

MID

400Hz

MID

2.5k

-15

+15

-15

+15

-15

+15

-15

+15

LOW

80Hz

LOW

MID

400Hz

LOW

80Hz

-15

+15

12k

+15

+20

+15

-15

+15

-15

+15

-15

+15

-20

+20

-20

+20

AUX MASTER

STEREO RETURNS

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

FREQ

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

FREQ

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

FREQ

MID

200

800

100

12k

-15

+15

-15

+15

LOW

80Hz

-15

+15

FREQ

MID

200

800

100

PAN

MUTE

PAN

MUTE

PAN

MUTE

PAN

MUTE

BAL

21/22

MUTE

ALT 3-4

BAL

0 dB=0 dBu

LEFT RIGHT

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

1-2

3-4

-20

40
50

SOLO

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

AUX 5/6

PRE

FX1

FX2

PRE

+15

AUX

+15

23/24

MUTE

ALT 3-4

40
50

GAIN

LINE GAIN

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

-20dB

+40dB

50%

100%

25%

75%

24
25

Содержание VLZ4

Страница 1: ...4 3 3 3 2 2 2 1 1 1 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 ONYX MIC PREAMPS LINE BAL UNBAL INSERTS TIP SEND RING RETURN LINE BAL UNBAL INSERTS TIP SEND RING RETURN ONYX MIC PREAMPS UNBALANCE...

Страница 2: ...rence regulations of the Canadian Department of Communications ATTENTION Le pr sent appareil num rique n met pas de bruits radio lectriques d passant las limites applicables aux appareils num riques d...

Страница 3: ...equency 19 34 Low EQ 19 35 High Mid EQ Level 19 36 Low Mid EQ Level 19 37 Pan 19 38 Mute 19 39 OL LED 19 40 Sig LED 20 41 Solo 20 42 Assign 20 43 Channel Fader 20 44 FX1 And FX2 20 45 USB Switch 20 2...

Страница 4: ...5 6 Convenient stereo return to mains for music playback or return to channel to implement EQ auxes and more PFL AFL solo modes 60mm long wearing log taper faders High resolution 12 segment stereo me...

Страница 5: ...upporttofind FAQs manualsandotherusefulinformation Emailusat techmail loudtechinc com Telephone1 800 898 3211tospeakwithoneofoursplendidtechnicalsupportchaps MondaythroughFriday normalbusinesshours Pa...

Страница 6: ...x level and monitor level when making connections to the mixer Better yet turn off the power When shutting down turn off any power amplifiers or powered speakers first When powering up turn them on la...

Страница 7: ...AL UNBAL 21 22 23 24 BAL UNBAL BAL UNBAL MONITOR MONO MONITOR L R 100 240 V 50 60 Hz 55W TALKBACK MIC RIGHT MAIN OUT INSERT LINE LEFT MAIN OUT INSERT LINE MONO MAIN OUT INSERT LINE LEVEL OUTPUT L USB...

Страница 8: ...through a pair of MR8mk3 s and nod their collective heads to the beat POWER ON PHANTOM ON 3 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 4 SUBGROUP OUTS BAL UNBAL SUBGROUP INSERTS TIP SEND RINGRETURN AUX INSER...

Страница 9: ...instance which don t need external power and aren t affected by it anyway Phantom power may be selected by pressing up on the mixer s phantom 21 switch Never plug single ended unbalanced micro phones...

Страница 10: ...annel signal can go out of the insert jack to an external device be processed and come back in on the same insert jack To do this requires a standard insert cable that must be wired thusly Tip Send ou...

Страница 11: ...nserts These 1 4 TRS jacks are for connecting serial effects such as compressors equalizers de essers or filters The insert point is after the mix amps but before the group send masters 74 and after t...

Страница 12: ...e channel level or main level except in AFL mode therefore turn down the phones level first as soloed channels may be loud The phones output follows standard conventions Tip Left channel Ring Right ch...

Страница 13: ...is set to L and subgroup 2 is set to R Any adjustments made to the subgroup drum levels during the show only pertain to the live show itself recording levels are not adjusted in the DAW unless they a...

Страница 14: ...o the mic input jacks if phantom power is on Do not plug instrument outputs into the mic XLR input jacks with phantom power on unless you know for certain it is safe to do so Be sure the main level 75...

Страница 15: ...15 15 U 15 15 U 20 20 U 20 20 U AUXMASTER LR STEREO RETURNS EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k...

Страница 16: ...Applying low cut removes all those problems so you can add low EQ without blowing your subwoofers 25 Pad 20 dB Switch In most cases the pad switch will be disengaged However microphones and balanced...

Страница 17: ...e chance of distortion due to overloading the input signals Dynamic range is the difference in level between the quietest and loudest parts of a song A compressor squeezes the dynamic range resulting...

Страница 18: ...ts or cuts all frequencies past the specified frequency For example the low EQ boosts bass frequencies below 80 Hz and continuing down to the lowest note you never heard Peaking means that certain fre...

Страница 19: ...5 U 15 15 U 15 15 U 15 15 U AUXMASTER EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k EQ HI 12k 15 15 U 15 1...

Страница 20: ...37 they are used to determine the destination of the channel s signal With the pan knob at the center detent the left and right sides receive equal signal levels main mix L R group 1 2 and group 3 4...

Страница 21: ...four signals may be recorded simultaneously and a stereo mix returned to the mixer for playback The six auxes receive signals from the channels via the channel aux sends 27 29 Auxes 1 4 may also be f...

Страница 22: ...phantom power which lets the mixer send low current DC voltage to the mic s electronics through the same wires that carry audio Semi pro condenser mics often have batteries to accomplish the same thi...

Страница 23: ...ase forgive its rudeness it is only trying to help and wants to be your friend 60 Solo Mode Engaging a channel s solo switch 41 will cause this dramatic turn of events Any existing source selection is...

Страница 24: ...1 to aux 2 and to main knobs 62 fully counter clockwise to avoid double bussing The talkback feature allows the engineer to communicate with the talent either through the phones output 17 or the aux 1...

Страница 25: ...1 Wrm 300ms 7 Warm Theater 19 Delay 2 Brt 250ms 8 Bright Stage 20 Delay 2 Wrm 200ms 9 Warm Hall 21 Delay 3 Brt 175ms 10 Concert Hall 22 Delay 3 Wrm 150ms 11 Cathedral 23 Chorus Dly 300ms 12 Gated Reve...

Страница 26: ...e is no need to hold down the switch es when using the talkback feature Simply engage the switch es and begin talking But don t forget to disengage the switch when you re done talking to them or they...

Страница 27: ...for example make sure that both group faders ride together to maintain the left right balance 75 Main Mix This stereo fader allows you to adjust the levels of the main mix signals sent to the XLR and...

Страница 28: ...ise Turn the channel gains down one by one If the sound disappears it s either that channel or whatever is plugged into it so unplug whatever that is If the noise disappears it s from your whatever Po...

Страница 29: ...two mic preamps 2 1 SHIELD COLD HOT 3 SHIELD COLD HOT 3 2 1 Balanced XLR Output Connector SLEEVE TIP SLEEVE TIP RING RING TIP SLEEVE RING Balanced 1 4 TRS Connector You can cook up your own adapter fo...

Страница 30: ...ll 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 chann...

Страница 31: ...15 dB sweep 100 Hz 8 kHz High 15 dB 12 kHz Low Cut Filter 18 dB octave 3 dB 100 Hz 4 Band Equalization stereo channels Low 15 dB 80 Hz Low Mid 15 dB 400 Hz High Mid 15 dB 2 5 kHz High 15 dB 12 kHz USB...

Страница 32: ...ch LED To Aux 2 Aux 6 Aux 3 Aux 4 Aux 5 Aux 6 Aux 1 Aux 2 HPF In bypass MID Phantom Power To All Mics Phantom Power L R Int FX 1 Out L FX 1 Line LO MID MID 80 400 2 5K 12K HI LO MID MID 80 400 2 5K 12...

Страница 33: ...ect Aux 1 Level Preset select FX Preset Display 1 2 Solo Logic Solo USB Out FX 1 Bypass Logic In FX 1 Out L Out R R L Tap FX Mute Active L R Tape Out Main level Aux 3 pre post Aux 4 pre post 3 4 Aux 3...

Страница 34: ...5 5 U 60 dB OO SOLO 1 2 3 4 LR OL 20 30 20 10 10 40 50 5 5 U 60 dB OO SOLO 1 2 3 4 LR OL 20 30 20 10 10 40 50 5 5 U 60 dB OO SOLO 1 2 3 4 LR OL 20 30 20 10 10 40 50 5 5 U 60 dB OO SOLO 1 2 3 4 LR OL 2...

Страница 35: ...15 15 U FREQ MID 200 2k 800 100 8k EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k EQ HI 12k 15 15 U 15 15 U LOW 80Hz 15 15 U FREQ MID 200 2k 800 100 8k EQ EQ EQ HI 12k 15 15 U...

Страница 36: ...4 Bus Dimensions 6 U 6 0 in 153 mm 1 8 in 46 mm 29 4 in 748 mm 19 1 in 486 mm 6 0 in 153 mm WEIGHT 31 0 lb 14 1kg 6 0 in 153 mm 1 8 in 46 mm 38 0 in 964 mm 19 1 in 486 mm 6 0 in 153 mm WEIGHT 39 0 lb...

Страница 37: ...tch to the right will select either Groups 3 4 or Aux 5 6 to feed USB output channels 3 4 For example with both USB ouput switches in the default position up true 4 track recording may be accomplished...

Страница 38: ...eflections that would be found in a very large stone walled house of worship Gives amazing depth to choirs wind instruments organs and soft acoustic guitars 12 Gated Reverb This preset incorporates an...

Страница 39: ...vice representative will at its option either repair or replace any such nonconforming product provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at www...

Страница 40: ...16220 Wood Red Road NE Woodinville WA 98072 USA Phone 425 487 4333 Toll free 800 898 3211 Fax 425 487 4337 www 720trees com...

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