Справочник Пользователя для Mackie 1220I

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Owner's Manual   
11
Onyx 1220i Features
Rear Panel
1. POWER CONNECTION
This is a standard 3-prong IEC power connector. 
Connect the detachable linecord (included in the box 
with your mixer) to the power receptacle, and plug the 
other end of the linecord into an AC outlet. The Onyx 
1220i has a universal power supply that can accept any 
AC voltage ranging from 100 VAC to 240 VAC. No need for 
voltage select switches. It will work virtually anywhere 
in the world. That’s why we call it a “Planet-Earth” power 
supply! It is less susceptible to voltage sags or spikes, 
compared to conventional power supplies, and provides 
greater electromagnetic isolation and better protection 
against AC line noise.
Disconnecting the plug’s ground pin is  
dangerous. Don’t do it.
2. POWER SWITCH
Press the top of this rocker switch inwards to turn on 
the mixer. The front panel power LED [46] will glow 
with happiness, or at least it will if you have the mixer 
plugged into a suitable live AC mains supply.
Press the bottom of this switch to put the mixer into 
standby mode. It will not function, but the circuits are 
still live. To remove AC power, either turn off the AC 
mains supply, or unplug the power cord from the mixer 
and the AC mains supply.
As a general guide, you should turn on your 
mixer fi rst, before any external power  
amplifi ers or powered speakers, and turn it off 
last. This will reduce the possibilities of any 
turn-on, or turn-off thumps in your speakers. 
3. FIREWIRE CONNECTIONS
FireWire is a high-speed two-way interface for    
connecting digital devices. Two FireWire connectors 
allow the transfer of digital audio to and from your   
computer or digital audio workstation (DAW) with 
ultra-low latency. Usually, only one connector is used.
The FireWire interface provides the following outputs 
to your computer:
• 
Channels 1–12, tapped pre-fader, and either 
pre-EQ, or post EQ (your choice).
• 
Aux send 1 and 2 (a copy of the fi nal aux  
outputs to your stage monitors or processors). 
• 
Left/right main mix. The left/right main mix 
at the FireWire output is not affected by the 
main mix level control (important for recording 
live).
Use FireWire to record a live performance directly to 
your computer, then you can mixdown to a stereo mix 
later. Or you can use FireWire to turn your Onyx mixer 
into a high-quality computer audio interface for your 
DAW.
FireWire also provides a return for two channels from 
a DAW or laptop. This can be routed through the control 
room/phones via the FireWire button [36], to  
monitor the computer audio through your control room  
speakers or headphones (or through the main  
speakers if assign to main mix [37] is selected). In 
this way, you can listen to pre-recorded songs and 
iTunes
®
 as intermission music, or examples of how the 
practice sessions should really sound.
These same two channels from the computer can 
also be chosen as inputs to channels 11 and 12,  
allowing you to adjust the gain, EQ, level, and pan, 
FIREWIRE
L
R
POWER
4
3
CHANNEL INSERT
BAL/UNBAL
1
AUX RETURN
2
2
1
1
( PRE-FADER / PRE EQ    TIP SEND / RING RETURN )
BAL/UNBAL
2
MAIN OUT
BALANCED
AUX SEND
L
R
L
R
MAIN OUTPUT
 LEVEL
MIC
+4dB 
1
2
3
4
5
6
8
7