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MG20XU/MG20/MG16XU/MG16/MG12XU/MG12 Owner’s Manual

5

PRECAUTIONS

PLEASE READ CAREFULLY 
BEFORE PROCEEDING 

Please keep this manual in a safe place for 
future reference.

 WARNING

Always follow the basic precautions listed below to 
avoid the possibility of serious injury or even death 
from electrical shock, short-circuiting, damages, fire or 
other hazards. These precautions include, but are not 
limited to, the following:

Power supply/power cord

• Do not place the power cord near heat sources such as 

heaters or radiators, and do not excessively bend or 
otherwise damage the cord, place heavy objects on it, or 
place it in a position where anyone could walk on, trip over, 
or roll anything over it.

• Only use the voltage specified as correct for the device. The 

required voltage is printed on the name plate of the device.

• Use only the supplied power cord/plug.

If you intend to use the device in an area other than in the 
one you purchased, the included power cord may not be 
compatible. Please check with your Yamaha dealer.

• Check the electric plug periodically and remove any dirt or 

dust which may have accumulated on it.

• Be sure to connect to an appropriate outlet with a protective 

grounding connection. Improper grounding can result in 
electrical shock, damage to the device(s), or even fire.

Do not open

• This device contains no user-serviceable parts. Do not open 

the device or attempt to disassemble the internal parts or 
modify them in any way. If it should appear to be 
malfunctioning, discontinue use immediately and have it 
inspected by qualified Yamaha service personnel.

Water warning

• Do not expose the device to rain, use it near water or in 

damp or wet conditions, or place on it any containers (such 
as vases, bottles or glasses) containing liquids which might 
spill into any openings. If any liquid such as water seeps 
into the device, turn off the power immediately and unplug 
the power cord from the AC outlet. Then have the device 
inspected by qualified Yamaha service personnel.

• Never insert or remove an electric plug with wet hands.

Fire warning

• Do not put burning items, such as candles, on the unit. 

A burning item may fall over and cause a fire.

If you notice any abnormality

• When one of the following problems occur, immediately turn 

off the power switch and disconnect the electric plug from 
the outlet. Then have the device inspected by Yamaha 
service personnel.
- The power cord or plug becomes frayed or damaged.
- It emits unusual smells or smoke.
- Some object has been dropped into the device.
- There is a sudden loss of sound during use of the device.

• If this device should be dropped or damaged, immediately 

turn off the power switch, disconnect the electric plug from 
the outlet, and have the device inspected by qualified 
Yamaha service personnel.

 CAUTION

Always follow the basic precautions listed below to 
avoid the possibility of physical injury to you or others, 
or damage to the device or other property. These 
precautions include, but are not limited to, the following:

Power supply/power cord

• When removing the electric plug from the device or an 

outlet, always hold the plug itself and not the cord. Pulling 
by the cord can damage it.

• Remove the electric plug from the outlet when the device is 

not to be used for extended periods of time, or during 
electrical storms.

Location

• Do not place the device in an unstable position where it 

might accidentally fall over.

• Do not block the vents. This device has ventilation holes at 

the bottom/sides to prevent the internal temperature from 
becoming too high. In particular, do not place the device on 
its side or upside down. Inadequate ventilation can result in 
overheating, possibly causing damage to the device(s), or 
even fire.

• Do not place the device in a location where it may come into 

contact with corrosive gases or salt air. Doing so may result 
in malfunction.

• Before moving the device, remove all connected cables.

• When setting up the device, make sure that the AC outlet 

you are using is easily accessible. If some trouble or 
malfunction occurs, immediately turn off the power switch 
and disconnect the plug from the outlet. Even when the 
power switch is turned off, electricity is still flowing to the 
product at the minimum level. When you are not using the 
product for a long time, make sure to unplug the power cord 
from the wall AC outlet.

• When rackmounting the device, always use two or more 

people. Attempting to lift the device by yourself may 
damage your back, result in other injury, or cause damage 
to the device itself.

• If the device is mounted in an EIA standard rack, carefully 

read the section “Precautions for Rack Mounting” on page 
35. Inadequate ventilation can result in overheating, 
possibly causing damage to the device(s), malfunction, or 
even fire.

Connections

• Before connecting the device to other devices, turn off the 

power for all devices. Before turning the power on or off for 
all devices, set all volume levels to minimum.

PA_en_2  1/2

Precautions

Summary of Contents for MG20XU

Page 1: ...EN Owner s Manual Precautions pages 5 6 Quick Start Guide pages 9 to 11 Troubleshooting page 29 to 31...

Page 2: ......

Page 3: ...g lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supp...

Page 4: ...l AC line filter s In the case of radio or TV interference relocate reorient the antenna If the antenna lead in is 300 ohm ribbon lead change the lead in to co axial type cable If these corrective mea...

Page 5: ...personnel The power cord or plug becomes frayed or damaged It emits unusual smells or smoke Some object has been dropped into the device There is a sudden loss of sound during use of the device If thi...

Page 6: ...elieve that condensation might have occurred leave the device for several hours without turning on the power until the condensation has completely dried out Avoid setting all equalizer controls and fa...

Page 7: ...ide 9 Step 1 Preparing the Power Supply 9 Step 2 Making Connections 9 Step 3 Powering Up the System 9 Step 4 Getting Sound to the Speakers 10 Step 5 Using the Built in Effects XU Models Only 11 Setup...

Page 8: ...ality Digital Effects XU Models The XU models MG20XU MG16XU MG12XU feature 24 built in effects that are based on SPX algorithms used by pro fessionals In particular the high quality reverb and delay e...

Page 9: ...pages 12 13 Front Panel and Rear Panel pages 14 15 Step 3 Powering Up the System To prevent an unwanted burst of noise from the speakers power up the devices in the following order peripheral devices...

Page 10: ...to a stereo input channel that has no GAIN knob adjust the output level on the connected device 3 Turn on the ON switches for each chan nel you are using 4 Turn on the ST switches for each chan nel y...

Page 11: ...R knob on the MG20XU are in slightly different locations than shown here Using Reverb and Delay Your mixes can be further enhanced by using the built in ambience effects such as reverb or delay Reverb...

Page 12: ...d on the rear panel Drum Bass guitar Microphones 3 Electric acoustic guitar Electric guitar Microphones 2 Powered speakers for musician monitoring Powered speakers main Mono input jacks accept both XL...

Page 13: ...n the MG20XU MG20 the SEND jack GROUP OUT jack MONITOR OUT jack and STEREO OUT jack are located on the rear panel Power amp Microphones DVD player voice Powered speakers Headphones CD player Speakers...

Page 14: ...Mono stereo input channels page 16 Stereo input channels page 16 Master block jacks page 24 The master block jacks on the MG16XU MG16 MG12XU MG12 are all located on the front panel The master block ja...

Page 15: ...ual 15 Controls and Connectors Rear Panel Power Block page 27 USB Block XU models only page 28 Master Block Master block jacks page 24 The master block jacks on the MG20XU MG20 are all located on the...

Page 16: ...ents such as electric keyboards and audio equipment Two jack types are provided phone type and RCA pin type NOTE On any given channel you may use either a phone jack or RCA jack but not both If both t...

Page 17: ...n 0 dB to 7 dB Attack time Approximately 25 ms Release time Approximately 300 ms NOTE Avoid setting the compression too high since the resulting higher average output level may lead to feedback i PHAN...

Page 18: ...r the signal before fader adjustment or post fader the signal after fader adjust ment signal is sent to the AUX bus by the PRE switch The AUX4 FX and AUX2 FX knobs are used to adjust the level of the...

Page 19: ...cted and the PEAK indicator lights red when the level reaches 3 dB below clipping 5 Bus assign switch These switches determine the bus es to which each channel s signal is sent Turn the switch on to o...

Page 20: ...2 MG20XU MG20 MG16XU MG16 AUX3 AUX4 FX AUX4 AUX1PRE AUX2 FX AUX2 HPF LOW MID HIGH 3 Stage EQ PEAK ON ST CH Fader STEREO L STEREO R PFL L PFL R GROUP 2 GROUP 1 GROUP 3 GROUP 4 ST 1 2 3 4 PFL CTRL HA HP...

Page 21: ...MG16XU MG16 CH13 14 15 16 MG12XU MG12 CH9 10 11 12 PFL Only MG16XU and MG16 HA USB PLAY L USB PLAY R L 10dBu R 10dBu HA EQ BAL MG16XU CH15 16 MG12XU CH11 12 AUX2 FX AUX2 AUX1 AUX3 AUX4 FX AUX4 PRE AUX...

Page 22: ...on page 33 e PROGRAM knob Selects one of the 24 built in effects Turn the knob to select the desired effect and then press the knob to enable it NOTE You can also select the desired effect by turning...

Page 23: ...s NOTE If this switch is on and the foot switch FOOT SW jack 0 is used to turn off the built in effect the switch flashes u Bus assign switch MG16XU MG12XU These switches determine the bus es to which...

Page 24: ...ti track recorder external mixer or another similar device e MONITOR OUT jacks Connect these impedance balanced TRS phone jacks to your operator monitoring system NOTE When the PFL indicator is flashi...

Page 25: ...ses or selected with PFL switches The 0 segment corresponds to the nominal output level The level meter PEAK indi cator lights when output reaches the clipping level PFL indicator When the PFL switch...

Page 26: ...witch If this switch is on the signals are sent to the STEREO L R bus via the GROUP 1 2 3 4 faders The GROUP 1 and 3 signal goes to the STEREO L bus and the GROUP 2 and 4 signal goes to the STE REO R...

Page 27: ...n to turn off the power CAUTION Note that the trace current continues to flow even while the switch is in the off position If you do not plan to use the mixer for a while be sure to unplug the power c...

Page 28: ...hen on again NOTICE Use an A B type USB cable The cable should be no more than 1 5 meters long A USB 3 0 cable cannot be used Be sure to wake the computer from sleep suspended standby mode before maki...

Page 29: ...4 28 STEP 1 Connections and Signal Flow Check if the instruments microphones and speakers are connected correctly and if any of the cables are damaged DI STEREO OUT jacks PHONES jack When connecting g...

Page 30: ...efore turning on the PHANTOM 48V switch ON switches On lit ST switches On PEAK indicators PFL switches All off When PFL switches are on only the sig nals from those channels are sent to the level mete...

Page 31: ...Where an input channel provides both a XLR input jack and a phone input jack or a phone input jack and an RCA pin jack are there connections made at both jacks Use only one of these jacks Is the micr...

Page 32: ...COMP 1 knob compressor Gain Threshold Ratio Threshold 22 dBu to 8 dBu Ratio 1 1 to 4 1 Output level 0 dB to 7 dB Attack time approx 25 msec Release time approx 300 msec EQ HIGH Gain 15 dB 15 dB Freque...

Page 33: ...d 11 SINGLE DLY Delay Time An effect which repeats the same sound only once Shortening the delay time produces a doubling effect 12 DELAY Delay Time Feedback delay adding multiple delayed signals 13 V...

Page 34: ...nd is used pri marily 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 standar...

Page 35: ...e rear of the rack open and position it at least 10 centimeters from walls or other surfaces If the rear of the rack cannot be left open install a commercially available fan or similar ventilating opt...

Page 36: ...switch 17 L Level meter 25 LINE USB switch 17 M MIC LINE 16 MONITOR section 25 MONITOR LEVEL knob 25 MONITOR OUT jack 24 Mono input jack 16 Mono stereo input jack 16 O ON switch 19 23 26 27 P PAD swi...

Page 37: ...MG20XU MG20 MG16XU MG16 MG12XU MG12 Owner s Manual 37 MEMO...

Page 38: ...MG20XU MG20 MG16XU MG16 MG12XU MG12 Owner s Manual 38...

Page 39: ...ic House 147 Skiathou Street 112 55 Athens Greece Tel 01 228 2160 SWEDEN FINLAND ICELAND Yamaha Music Europe GmbH Germany filial Scandinavia J A Wettergrensgata 1 Box 30053 S 400 43 G teborg Sweden Te...

Page 40: ...G PA Development Division 2014 Yamaha Corporation 401POAP 01A0 Printed in Vietnam ZJ42750 Yamaha Pro Audio global web site http www yamahaproaudio com Yamaha Manual Library http www yamaha co jp manu...

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