Mackie VLZ3 4BUS Manuale Utente

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   VLZ3 4•Bus
68. MONITOR LEVEL
This knob is used to adjust the volume at the monitor 
output [15, 16], from off to maximum gain (max).
69. PHONES LEVEL
This knob is used to adjust the volume at the phones 
output [17], from off to maximum gain (max). If solo 
is not active, the monitor, phones and meter are fed the 
post-fader main mix signal.
WARNING: The headphone amp is loud, and 
can cause permanent hearing damage. Even 
intermediate levels may be painfully loud 
with some headphones. BE CAREFUL! Always turn this
control all the way down before connecting headphones, 
or pressing a solo switch [41, 49, 53, 55, 73], or doing 
anything new that may affect the headphone volume. 
Then turn it up slowly as you listen carefully.
70. TALKBACK LEVEL
Use this knob to control the level of the talkback  
signal being routed to the main mix or aux 1-4 outputs, 
from the internal microphone.
1.  Start with this control turned down.
2.  Select the destination, either main mix and/or 
aux 1-4 [71], and make sure that their levels 
are already set nicely, using the main mix fader 
[75] or aux masters [52].
3.  Slowly turn this control up until you get    
confirmation from whoever is listening that 
they can hear and obey your every command.
Once you have set the level, you can leave it there for 
the duration of the session or gig. 
71. PUSH TO TALK: MAIN, AUX 1-4
Push in the main switch to route the talkback signal 
to the main outputs. Use this to communicate with the 
talent in the studio through the headphones during a 
recording session. 
The aux 1-4 switch routes the talkback signal to the 
aux send 1-4 outputs [13]. Use this to communicate 
with the musicians through their stage monitors when 
you are setting up a live performance.
It is fine to have both destination switches pushed in 
at the same time, so the talkback signal will be routed 
to both destinations. But if you don’t have either of the 
destination switches engaged, the talkback signal won’t 
go anywhere. You might as well be talking to a brick 
wall.
NOTE: The talkback destination switches 
are latching switches, not momentary. In 
other words, there 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 may hear your unflattering remarks 
regarding their choice of apparel.
NOTE #2: The talkback will not work unless 
you have a microphone attached to the  
talkback mic input [19].
72. COMPRESSOR
Each of the four groups in the VLZ3 4•Bus mixer has
an in-line compressor circuit with a variable  
threshold. This is very useful for compression of vocals, 
and snare drums, for example. See page 17 for an entire 
page (and a graph even!) dedicated entirely to
explaining compression.
73. GROUPS ASSIGN
One popular use of the groups is to use them as  
master faders for a group of channels on their way to the 
main mix [75]. Let us say you have a drum kit hogging 
up seven channels and you are going to want to control 
their group volume more conveniently. You do not want 
to try that with seven hands or seven fingers, so just  
un-assign these channels from the main mix and  
reassign them to groups 1-2, engage the assign to main 
mix left on group 1 and assign to main mix right on 
group 2. Now you may ride the entire drum mix with two 
faders - groups 1 and 2.
If you engage just one assign to main mix button per 
group (left or right), the signal sent to the main mix 
[75] will be the same level as the group outs [11]. If 
you want the subgroup to appear in the center of the 
main mix, engage both the assign to main mix left and 
right buttons. The signal will be sent to both sides, and 
reduced in level by 3 dB like a pan pot, so the overall 
level is the same, whether the group is assigned to main 
left, main right, or both.
Each group may also be soloed. This does not mean 
that each member of a group gets their shot at a solo 
and stardom. Rather, this allows you to listen to the 
group in isolation via monitor outputs or headphones. 
Being an output, these signals are AFL.
Groups 1-2 and 3-4 are paired together for purposes of 
solo and work together differently in pfl and afl modes. 
In pfl mode, since pfl is a mono bus, soloing Group 1 by 
itself, Group 2 by itself or both together will result in the 
same level solo signal, monaurally (assuming Groups 1 
and 2 have the same levels of signal).