CHANNEL STRIP FEATURES

Mono Stereo channels channels

The channel strip is where you dress up

each channel’s audio: setting the gain, adding EQ, riding the fader, tapping signal off to stage monitors and effects devices. After a signal leaves the channel strip it goes through a mix stage and on to the master section (page 22).

The 24•4-VLZ PRO has 20 mono channels and two stereo channels. The 32•4-VLZ PRO has 28 mono channels and two stereo chan- nels. All of the mono channels are identical, and all of the stereo channels are identical. In this chapter, both flavors are described with the help of an illustration from the 24•4-VLZ PRO. This shows a mono channel strip 20 and its neighbor, the stereo strip 21/22.

25. TRIM

If you haven’t already, please read SET THE LEVELS on page 8.

TRIM adjusts the input sensitivity of the mic and line inputs connected to the channels, mono or stereo. This allows signals from the outside world to be adjusted to optimal internal operating levels.

Through a mono channel’s MIC (1) XLR in- put, there is 0dB of gain fully down and 60dB of gain fully up.

Through a mono channel’s LINE IN (2) TRS input, there is 15dB of attenuation fully down and 45dB of gain fully up; with a “U” (unity gain) label at about 10:00 (knob one- third up).

Through the stereo channel’s STEREO LINE IN (4) TRS inputs, there is 20dB of attenuation fully down and 20dB of gain fully up; with a “U” (unity gain) label at 12:00 (knob halfway up).

AUX SEND: (26 and 27)26. AUX

These knobs tap a portion of each channel signal and send it out, via the AUX SENDS (10) jacks, to an amp & speakers for stage monitors or to an effects device for parallel effects processing.

Each AUX knob’s level ranges from off, through unity (center detent position), on up to 15dB of extra gain (fully clock- wise). AUX levels are controlled by these knobs and by the AUX SEND MASTERS (46).

The stereo channels’ AUX knobs control a mono sum of the channel’s stereo signals. For instance, channel 21 (L) and 22 (R) mix together to feed that channel’s mono AUX send knobs.

27. PRE

Aux sends 1 & 2 are always pre-fader, designed for stage monitor applications. Aux sends 5 & 6 are always post-fader, designed for parallel effects applications. Aux sends 3 & 4, thanks to this switch, can be set to be pre- or post-fader, so they can be used for monitors or effects.

PRE-FADER: With the PRE switch engaged (down), AUX 3 and 4 deliver signals post-insert, post-low cut, post-EQ, post-mute, pre-fader. Any changes made to the channel controls, except the fader, will affect the aux send signal.

POST-FADER: With the PRE switch disengaged (up), AUX 3 and 4 deliver signals post-insert, post-low cut, post-EQ, post-mute and post-fader. Any changes made to the channel controls will affect the aux send signal.

 

-10

d

 

 

 

 

BV

TRIM

U

TRIM

 

MIC

AIN

 

G

 

 

U

 

 

20

 

21

 

 

 

 

 

 

 

 

 

22

060

+15dB -45dB

-20

+20

U

AUX

U

AUX

 

1

 

1

 

PRE

 

PRE

OO

+15

OO

+15

U

 

U

 

 

2

 

2

 

PRE

 

PRE

OO

+15

OO

+15

U

 

U

 

 

3

 

3

OO

+15

OO

+15

U

 

U

 

 

4

 

4

OO

+15

OO

+15

U

PRE

U

PRE

 

5

 

5

 

POST

 

POST

OO

+15

OO

+15

U

 

U

 

 

6

 

6

 

POST

 

POST

OO

+15

OO

+15

U

EQ

U

EQ

 

HI

 

HI

 

12k

 

12k

-15

+15

-15

+15

U

 

U

 

 

MID

 

HI

 

 

MID

 

 

 

3k

-15

+15

-15

+15

600U

150

1.5k FREQ

 

LOW

 

MID

 

 

 

800Hz

100

8k

-15

+15

 

U

 

U

 

LOW

 

LOW

 

80Hz

 

80Hz

-15

+15

-15

+15

LOW CUT

75Hz

18dB/OCT

 

 

OL

 

 

OL

L

R

-20

L

R

-20

 

 

 

PAN

 

 

PAN

 

 

20

 

21 22

MUTE

 

MUTE

 

 

 

MUTE/

 

 

MUTE/

 

 

SOLO

 

 

SOLO

dB

 

 

dB

 

 

10

 

SOLO

10

 

SOLO

5

 

 

5

 

 

U

 

1-2

U

 

1-2

5

 

3-4

5

 

3-4

 

 

 

 

10

 

 

10

 

 

20

 

L-R

20

 

L-R

30

 

 

30

 

 

40

 

 

40

 

 

50

 

 

50

 

 

60

 

 

60

 

 

OO

 

 

OO

 

 

19