Yamaha MW12 Manual Do Utilizador

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MW12 Owner’s Manual
8
Quick Guide
English
1
Turn the power to all gear that is to be 
connected to the MW12 off/standby 
(except the computer), and set the 
channel faders, ST master fader, and 
GROUP 1-2 fader to their minimum 
settings.
2
To prevent loud pops and noises, turn on 
the power to your sound gear starting 
with the sources (instruments, CD 
players, etc.) and ending with the power 
amplifier or powered speakers.
Example:
 Instruments, microphones, and CD players 
first, then the mixer, and finally the power amplifier or 
powered speakers.
n
The first time you connect to the computer’s USB 
connector, or change the connection to a different 
USB port, a driver installation display may appear. If 
this occurs, wait until the installation is complete 
before proceeding.
Balanced Cables and Unbalanced Cables
Two types of cables can be used to connect microphones, 
electronic instruments, and other audio sources to the 
mixer’s inputs, as well as to connect the mixer’s outputs to 
a power amplifier or related gear: balanced or 
unbalanced. Balanced cables are highly resistant to noise, 
and are the best choice for low-level signals such as the 
output from microphones, as well as for long cable runs. 
Unbalanced cables are generally used for short runs from 
line-level sources such as synthesizers.
Cable Guidelines
Microphone cable:
Balanced is best.
Short line-level cables: Unbalanced cable is fine in a 
relatively noise-free environment.
Long line-level cables:
Balanced is best.
Connector Types
XLR Connectors
This 3-pin connector is 
resistant to externally 
induced noise, and is used 
primarily for balanced 
connections. With properly 
designed receiving circuitry 
cables with this type of connector can also be used for 
unbalanced signals. XLR type connectors are the standard 
for microphone connections as well as most professional 
audio gear.
Phone Connectors
Phone connectors are 
available in mono and 
stereo versions. Stereo 
types are also known as 
“TRS” connectors 
(Tip-Ring-Sleeve), and are 
used for stereo headphone jacks, insert jacks, and also to 
carry balanced signals in many cases. Unbalanced types 
are used for mono signals —guitar cables are a common 
example.
RCA Pin Connectors
This type of unbalanced 
connector is most 
commonly found on home 
audio and video equipment. 
RCA type pin jacks are 
often color coded: white for 
left audio channel and red for right audio channel, for 
example.
Step
3
Powering Up the System
Observe the following precautions when turning on 
phantom power.
• Make sure that the PHANTOM switch is off when phantom 
power is not needed.
• Make sure that no equipment other than phantom-powered 
microphones is connected to the XLR type inputs when turning 
phantom power on. Applying phantom power to equipment 
other than phantom-powered microphones can damage the 
equipment. The exception to this rule is balanced dynamic 
microphones, which can safely be left connected while phantom 
power is applied to the XLR inputs.
• To minimize the possibility of speaker damage, turn phantom 
power on ONLY while your power amplifier or powered speakers 
are switched off. It’s also a good idea to turn the mixers output 
controls—the ST and GROUP 1-2 faders—all the way down 
when turning phantom power on.
Channel Fader
GROUP 1-2 Fader
ST Master Fader