Mackie 1402VLZ4 Manuale Proprietario

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Owner’s Manual
Owner’
s Manual
These balanced outputs are capable of delivering 22
dBu into a 600 ohm balanced or unbalanced load.
16.  Alt 3–4 Outs
These 1⁄4" outputs are the sum of any channels that
have the mute/alt 3-4 [25] switch pressed in (see page
13 for the tender details).
These balanced outputs are capable of delivering  
22 dBu into a balanced or unbalanced load.
17.  Channel Insert (Channels 1–6)
These rear-panel jacks are where you connect serial
effects such as compressors, equalizers, de-essers,  
or filters. Since most people don’t have more than a  
few of these gadgets, we’ve included inserts for just  
the first six channels. If you want to use this kind of pro-
cessing on channels 7 through 14, simply patch through
the processor before you plug into the 1402VLZ4.
The channel insert points are after the gain [4]  
and low cut [3] controls, but before the channel’s  
EQ [27] and fader [23]. The send (tip) is low-imped-
ance (120 ohms), capable of driving any line-level
device. The return (ring) is high-impedance (over 2.5 k
ohms) and can be driven by almost any device.
See Appendix B for details and drawings about insert
cables, and a diagram showing three ways to use the
jacks.
Besides being used for inserting external devices,
these jacks can also be used as channel direct outputs;
post-gain, post-low cut, and pre EQ. In fact, our Onyx
mic preamps have become so famous, that people buy
these mixers just to have six of these in their arsenal.
tip
This plug connects to one of the 
mixer’s Channel Insert jacks.
ring
tip
ring
sleeve
SEND to processor
RETURN from processor
(TRS plug)
12.  Headphones Out
This stereo jack will drive any standard headphone  
to very loud levels. To learn how signals are routed  
to these outputs, see source matrix [33] on page 16.  
If you’re wiring your own cable for the phones output,
follow standard conventions:
Tip = Left channel 
 
Ring = Right channel 
Sleeve = Common ground
WARNING: When we say the headphone  
amp is loud, we’re not kidding. It can cause
permanent ear damage. Even intermediate
levels may be painfully loud with some earphones.  
BE CAREFUL! Always turn the ctl room/ submix fader
all the way down before connecting headphones. Keep
it down until you’ve put the phones on. Then turn it up
slowly. Why? “Engineers who fry their ears find them-
selves with short careers.”
13.  XLR Main Outs 
Use these to send the main mix out into the line-level
balanced inputs of your amplifier or powered speakers.
These low-impedance outputs are fully balanced
and capable of driving +4 dBu lines with up to 28 dB
of headroom. This output is 6 dB hotter than other
outputs.
14.  XLR Main Out Level Switch
Engaging this switch reduces the level of the  
balanced XLR main outputs by 40 dB, so you can  
feed the microphone input of, say, another mixer.  
(You can safely connect the XLR outputs into an  
input that provides 48V phantom power.)
15.  Control Room Outs
These 1⁄4" outputs are provided so you can listen  
to something other than the main mix. The source  
is selected using the source matrix [33] switches  
(see page 16). You can choose to listen to the main mix,
the alt 3-4 stereo bus (see mute/alt 3-4 on page 13),  
soloed channels, or the tape input. The volume is  
adjustable with the control room/submix [34]knob.
CAUTION:
 
    TO REDUCE THE RISK OF FIRE
REPLACE WITH CORRECT TYPE FUSE. REMOVE
POWER CORD BEFORE CHANGING VOLTAGE. 
100VAC
120VAC
240VAC
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