Mackie 402-VLZ4 Manuel Du Propriétaire

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15
Owner’s Manual
Owner’
s Manual
9. Low EQ
This control  
gives you up to  
15 dB boost or cut
below 80 Hz.  
The circuit is flat
(no boost or cut) at
the center position.
This frequency
range represents
the punch in bass
drums, bass guitar,
fat synth patches,
and some really  
serious male singers.
Used in conjunction with the low cut [5]
switch, you can boost the low EQ without  
injecting a ton of subsonic debris into the
mix.
10. Stereo Pan Switch (Ch. 1–2)
With this switch out, each mono channel
feeds both the left and right sides of the
main mix equally. For example:
•  Playing a mono source: If you talk into
a microphone connected to input 1,
your sweet tones will be heard in both
the left and right loudspeakers.
•  Overdubbing a mono source: if you
are monitoring directly through the
headphones, you can hear the overdub
signal in both ears while you are
playing.
With this switch pressed in, channel 1
will play only in the left side of the main mix,
and channel 2 will play in the right side.
For example:
•  Recording a stereo source: If you have
a stereo microphone connected to
the mic inputs, or if you are playing a
stereo source into the line inputs, each
side of the source can be recorded
discretely onto a recorder connected
to the main or tape outputs.
The pan switch does not affect channels
3 or 4, or the tape inputs.
20
Hz
100
Hz
1k
Hz
10k
Hz
20k
Hz
–15
–10
–5
0
+5
+10
+15
20
Hz
100
Hz
1k
Hz
10k
Hz
20k
Hz
–15
–10
–5
0
+5
+10
+15
Low EQ with Low Cut
Low EQ
11. Level
This adjusts the channel’s level from off,
to unity gain at the center, on up to 12 dB of
additional gain. Once the gain [7] has been
adjusted for each channel, use the level to
adjust how much of each channel appears in
the main mix.
Channels 1 and 2 use mono level controls,
and channels 3 and 4 uses a stereo control.
12. OL LED
This overload LED will illuminate if the
input signal is too high. The signal level is
measured just before the level control, but
after the gain control and EQ.
If the OL LED does illuminate, turn down
the gain and/or the EQ controls until this
will only illuminate occasionally when the
input source is running high. Turning the
level control will not affect the OL LED.
13. Main Outs
These outputs feed the main mix out into
the waiting world. They can be connected
to the line-level inputs of power amplifiers,
powered speakers, or to the line inputs of
another mixer.
To use these outputs to drive balanced
inputs, connect 1⁄4" TRS (Tip–Ring–Sleeve)
phone plugs like this:
Tip = + (hot)
Ring = –(cold)
Sleeve = Ground
For most music recording and PA
applications, unbalanced lines are fine.
To drive unbalanced inputs, connect
1⁄4" TS (Tip–Sleeve) phone plugs like this:
Tip = + (hot)
Sleeve = Ground