Controls and Functions. Yamaha MG12XUK

Controls and Functions

Top panel

Channel section (Input:

q to !4) q [MIC/LINE] mono input jacks (channels 1-6)

For connecting a microphone, instrument, or audio device (CD player, etc.) to the unit. These jacks support both XLR and phone plugs.

w [PAD] switches

Turning the switch on ( ) will attenuate the sound input to the unit. If you hear distortion or the [PEAK]

LED !0 lights, turn the switch on ( ).

NOTE

Turn the [LEVEL] knob to "0" (minimum) before toggling the

[PAD] switch on ( be produced.

) and off ( ). Otherwise, noise may e [HPF] (High-Pass Filter) switches

Turning the switch on ( ) will apply a high-pass filter that attenuates frequencies below 80 Hz. When speaking into the microphone, you may want to turn this switch on ( ), in order to reduce unwanted vibration and wind sound received by the microphone.

r [GAIN] knobs

Determines the basic volume for each of the channels 1 to 6. Adjust these so that the corresponding [PEAK]

LEDs !0 flash briefly when singing or playing the loudest.

t [COMP] knobs

Adjusts the amount of compression applied to the channel. As the knob is turned to the right, the threshold, the ratio, and the output level are adjusted at the same time.

• 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 y [PHANTOM +48V] switch/LED

When this switch is on ( ), the LED lights indicating that the unit supplies DC+48 V phantom power to the

XLR plugs of the [MIC/LINE] mono input jacks q. Turn this switch on when using a phantom-powered condenser microphone.

NOTICE

Be sure to leave this switch off ( ) if you do not need phantom power. Follow the important precautions below, in order to prevent noise and possible damage to external devices as well as the unit when you operate this switch.

• Be sure to leave this switch off when connecting a microphone or other device that does not require phantom power to channels 1 to 6.

• Do not connect/disconnect a cable to/from channels 1 to 6 while this switch is on.

• Turn the [LEVEL] knobs of channels 1 to 6 to the minimum before operating this switch.

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Controls and Functions u Equalizer (EQ) knobs

Adjust the sound quality by using the [HIGH] (high frequency band), [MID] (middle frequency band), and

[LOW] (low frequency band) knobs. If you do not need to adjust the sound quality, set the knob to the “



” (flat) position.

i [FX] (effect) knobs

Adjusts the volume sent from each channel to the internal effect and the [FX SEND] jack.

o [PAN] knobs (channels 1 to 6)

[BAL] knobs (channels 7/8 and 9/10)

[PAN/BAL] knobs (channels 11/12)

[PAN]: Adjusts the volume balance of each channel sent to the stereo bus, and determines the positioning of the sound image between left and right (stereo L/R).

When the knob is located at the 12 o’clock position, the channel’s sound will be sent to the stereo bus channels

(L and R) at the same volume. In this case, the sound image is positioned at the center.

[BAL]: Determines the volume balance of the stereo channels (7/8 to 11/12) (L/R) sent to the stereo bus.

When the knob is located at the 12 o’clock position, the sound of the stereo channels will be sent to the stereo bus channels (L and R) at the same volume respectively.

[PAN/BAL]: Provides both [PAN] and [BAL] functions.

You can use this as a [PAN] control when sound is input to the [LINE] (L/MONO) jack, and as a [BAL] control when sound is input to both [LINE] (L) and [LINE] (R) jacks.

!0 [PEAK]LED

Lights when the volume of input and/or post-equalizer sound is too high (when reaching 3 dB below clipping).

If it is lit frequently, turn the [GAIN] knob r to the left to lower the volume.

!1 [LEVEL] knobs

For adjusting the volume balance among the channels.

Generally, set this to the “” position.

!2 [TO MON /TO ST ]switch

For selecting the output destination of the input sound to channels 11/12. Normally set this switch to [TO

ST ]. When you use the unit with a computer connected to the [USB 2.0] terminal, toggle this switch according to your specific application, referring to the chart in “Rear panel USB section.”

!3 [LINE] stereo input jacks (channels 7/8 to 11/12)

For connecting line-level devices such as an electric keyboard or an audio device. These jacks support phone plugs and RCA-pin plugs.

NOTE

Regarding input to channels 7/8 and 9/10, if both phone and

RCA-pin jacks are used at the same time, the phone jack will take priority.

!4 [LINE /USB ] switch

Toggles the sound source input to channels 11/12.

When the switch is set to [LINE ], the source will be the [LINE] stereo input jack !3, and when set to

[USB ], the source will be the [USB 2.0] terminal.

MG12XUK Owner’s Manual 13

Controls and Functions

Top panel

Master section (Output:

!5 to @3)

!8 [MONITOR OUT] jacks

For connecting a monitor system for operators. These jacks support phone plugs.

!9 [POWER] LED

Lights when the [ / ] switch on the rear panel is set to on (pressed to the [ ] position).

@0 Level meter

The L and R meters show the level (volume) of the signal output from the [STEREO OUT] jacks by seven steps; “PEAK” (+17), “+10”, “+6”, “0”, “-6”, “-10”, and “-20” dB. If the “PEAK” lamp continuously lights in red, turn the [STEREO LEVEL] knob to the left to lower the volume.

@1 [STEREO MUTE] switch

Turning the switch on ( ) will mute the sound of stereo bus from the output of [MONITOR OUT] jacks or

[PHONES] jack. In this state, when setting the [TO

MON /TO ST ] switch !2 for channels 11/12 to

[TO MON ], you can hear the sound only from channels 11/12. For details about the switch, see the “Rear

panel USB section” on page 16.

@2 [MONITOR/PHONES] knob

Adjusts the volume output to the [MONITOR OUT] jacks and the [PHONES] jack.

@3 [STEREO LEVEL] knob

Adjusts the overall volume output from the [STEREO

OUT] jacks.

!5 [FX SEND] jack

For connecting an external effects unit or a monitor system for players. This phone-plug jack outputs the sound adjusted with the [FX] knob respectively.

!6 [STEREO OUT] jacks

For connecting a powered speaker or amplifier. These jacks support both XLR and phone plugs.

!7 [PHONES] output jack

For connecting a set of headphones. This jack supports a stereo phone plug.

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Controls and Functions

Top panel

Internal effect section (Output:

q to u) e [PARAMETER] knob

Adjusts the parameter (depth, speed, etc.) for the selected effect. The last value used with each effect program is saved. For details about the parameter, see the

“Effect Programs” list on page 17.

NOTE

When you change to a different effect program, the unit automatically restores the value that was previously used with that program (regardless of the current position of the [PARAME-

TER] knob). Once you turn the [PARAMETER] knob, the value of current knob position will become valid.

r Effect program list

This is the list of the internal effect programs. For details

about the programs, see the “Effect Programs” list on page 17.

t [FX ON] switch

When the switch is turned on ( ), the switch lights indicating the internal effect is active. If you turn off the internal effect with the foot switch when the switch is on

( ), the LED of the switch flashes.

y [FX RTN LEVEL] knob

Adjusts the volume of the internal effect sound.

u [FOOT SW] jack

For connecting an optionally available unlatched type footswitch, such as the Yamaha FC5. When the [FX ON] switch t is turned on ( ), the internal effects can be toggled on/off with the footswitch as needed with your foot. This jack supports a phone plug.

q Display

Indicates the effect program number selected with the

[PROGRAM] knob w. The number flashes during selection; however, if several seconds pass without a selection being made, the program returns to the last number selected.

w [PROGRAM] knob

Selects one of the 24 internal effects from 1-24. Turn the knob to select the desired effect program, and then press the knob to actually set it. For instructions on how

to apply the effect, see the section “Applying Effects” on page 17.

NOTE

Turning the knob while pressing it down also allows you to simultaneously select and set the effect program (without needing to press the knob finally to set it).

MG12XUK Owner’s Manual 15

Controls and Functions

Rear panel

USB section (

@4 to @6)

Caution

The unit may heat up by as much as 15 to 20°C while the power is on. This is normal. Please note that since the panel temperature may exceed 50°C in ambient temperatures higher than 30°C, you should exercise caution to prevent burns.

@4 [AC ADAPTOR IN] connector

For connecting the supplied AC adaptor.

@5 [ / ] switch

For turning the power of the unit to standby ( ) and on

( ). The [POWER] LED !9 on the top panel lights when the switch is set to on ( ).

NOTE

Rapidly switching the unit between on and standby in succession can cause it to malfunction. After setting the unit to standby, wait for about six seconds before turning it on again.

NOTICE

Even when the switch is in the standby ( ) position, electricity is still flowing to the unit. If you do not plan to use the unit for a while, be sure to unplug the AC adaptor from the outlet.

@6 [USB 2.0] terminal

For connecting to a computer via a commercially available USB 2.0 cable. (This product does not come with a cable.) The sound of the stereo bus is output to the computer. (The [STEREO LEVEL] knob @3 does not affect the sound.) For inputs and outputs to/from the computer, you may need a dedicated USB driver. Check and download the driver at the following Yamaha web site and install it to the computer before use. The cable should be no more than 3 meters long. http://www.yamahaproaudio.com/mg_xu/

 Using the unit connected to a computer

Set the [LINE /USB ] switch !4 of channels 11/12 to [USB ]. Depending on your particular application, you can specify the output destination and monitoring sound by selecting the settings of the [TO MON /TO

ST ] switch !2 for channels 11/12 and the [STEREO

MUTE] switch @1. For details, see the chart below.

 Adjusting the playback volume from a computer

(Attenuator)

1. Press the [PROGRAM] knob five times consecutively to display the attenuation value (dB).

2. Turn the [PROGRAM] knob to set it between -24 dB to 0 dB (minus sign is not displayed).

3. Press the [PROGRAM] knob again to exit the setting. When the attenuator is enabled, the dot lights at the lower right of the display.

Output Destinations and Monitoring Sound

Application

When recording with

DAW software while listening to the playback sound from a computer.

Selection of the output destination sent from channels 11/12

[TO MON

ST

/TO

] switch

[TO MON ]*1

Output destination

[MONITOR OUT] jack*2

[PHONES] jack*2

Selection of the monitoring sound with the headphones/monitor speaker

[STEREO MUTE] switch

Monitoring sound

On ( )

The direct sound (of the instrument) input to the MG12XUK will be muted, allowing you to hear the playback sound only from the

DAW. (Direct monitoring: Off )

Off ( )

You can hear the mixed sound of the direct instrument sound input to the MG12XUK and the playback sound from the

DAW.(Direct monitoring : On)

When playing back sound from a computer.

For example: BGM playback, Internet broadcasting

[TO ST ]

Stero bus 

[STEREO OUT] jack

Normally set to

Off ( )

You can hear the mixed sound of the instrument sound input to the MG12XUK and the playback sound from a computer.

*1 NOTICE: If you set the switch to [TO ST back.

] when you use the DAW software, a loop may be produced, possibly resulting in feed-

*2 The audio signal cannot be sent to the computer because it does not pass through the stereo bus.

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