Yamaha mx12 4 инструкция на русском

E

MIXING CONSOLE

Owner’s Manual

PHONES

L

(MONO)

R

C-R OUT

ST OUTPUT

RTN SEND

GROUP

OUTPUTINPUT INPUT

L

(MONO)

R

L

(MONO)

R

EFFECT MONI

2

1

2

3

4

MONI

1

PHANTOM +48V

ON

MIC

INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT

LINE LINELINE LINE LINE LINE LINE LINE

INS

I ⁄ O

INS

I ⁄ O

INS

I ⁄ O

INS

I ⁄ O

INSERT I/O

OUT IN

9

10

11

12

12345678

ST

GROUP

4

GROUP

3

GROUP

2

GROUP

1

11

12

9

10

010

3

4

ST

GROUP

EFFECT

MONI2

METER

C-R•PHONES

TAPE IN

ST

EFFECT

⁄ MONI

C-R•PHONES

010

010

010

010

010

010

ST

MONI

SEND

RTN

MONI 1MONI

EFFECT ⁄ MONI 2

ST

TAPE IN

ST

010

LR

L

R

TAPE IN

REC OUT

PHANTOM POWER

ON

VOCAL

L HALL S HALL

DIGITAL

EFFECT

MONI 1

EFFECT

/ MONI 2

L

R

PEAK

+5

+3

+1

0

-1

-3

-5

-7

-10

-15

-20

ST GRAPHIC EQUALIZER

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

+12

-12

6

0

6

+12

-12

6

0

6

8k4k

2k

1k

500

250

125

2413

10

5

0

5

10

15

20

30

40

00

1

2

3

4

+10

-34

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

BAL

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

2413

10

5

0

5

10

15

20

30

40

00

1

2

3

4

+10

-34

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

BAL

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

8

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

7

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

6

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

5

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

4

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

3

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

2

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

1

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI 1

EFFECT

PEAK

-15

+15

-15

+15

-15

+15

0

10

0

10

MIC

MIC

MIC

MIC

MIC

MIC MIC

L

R

OFF

MIXING CONSOLE

Precautions

MX12/4—Owner’s Manual

1. Avoid Excessive Heat, Humidity, Dust and Vibration

Keep the unit away from locations where it is likely to be

exposed to high temperatures or humidity — such as

near radiators, stoves, etc. Also avoid locations which

are subject to excessive dust accumulation or vibration

which could cause mechanical damage.

2. Ventilation

The unit has ventilation slots on the rear and bottom

panels. Do not block these vents.

3. Avoid Physical Shocks

Strong physical shocks to the unit can cause damage.

Handle it with care.

4. Do Not Open the Case or Attempt Repairs or Modi-

fications Yourself

This product contains no user-serviceable parts. Refer

all maintenance to qualified Yamaha service personnel.

Opening the case and/or tampering with the internal

circuitry voids the warranty.

5. Always power off before making connections

Always turn the power OFF before connecting or dis-

connecting cables. This is important to prevent damage

to the unit itself as well as other connected equipment.

6. Handle Cables Carefully

Always plug and unplug cables — including the AC

power cord — by gripping the connector, not the cord.

7. Clean With a Soft Dry Cloth

Never use solvents such as benzine or thinner to clean

the unit. Wipe clean with a soft, dry cloth.

8. Always Use the Correct Power Supply

Make sure that the power supply voltage specified on the

rear panel matches your local AC mains supply. Also

make sure that the AC mains supply can deliver more

than enough current to handle all equipment used in

your system.

FCC INFORMATION (U.S.A.)

1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This

product, when installed as indicated in the instructions contained in this

manual, meets FCC requirements. Modifications not expressly

approved by Yamaha may void your authority, granted by the FCC, to

use the product.

2. IMPORTANT: When connecting this product to accessories and/or

another product use only high quality shielded cables. Cable/s supplied

with this product MUST be used. Follow all installation instructions.

Failure to follow instructions could void your FCC authorization to use

this product in the USA.

3. NOTE: This product has been tested and found to comply with the

requirements listed in FCC Regulations, Part 15 for Class “B” digital

devices. Compliance with these requirements provides a reasonable

level of assurance that your use of this product in a residential

environment will not result in harmful interference with other

electronic devices. This equipment generates/uses radio frequencies

and, if not installed and used according to the instructions found in the

users manual, may cause interference harmful to the operation of other

electronic devices. Compliance with FCC regulations does not

guarantee that interference will not occur in all installations. If this

product is found to be the source of interference, which can be

determined by turning the unit “OFF” and “ON”, please try to eliminate

the problem by using one of the following measures: Relocate either

this product or the device that is being affected by the interference.

Utilize power outlets that are on different branch (circuit breaker or

fuse) circuits or install 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 coaxial type cable. If these

corrective measures do not produce satisfactory results, please contact

the local retailer authorized to distribute this type of product. If you can

not locate the appropriate retailer, please contact Yamaha Corporation

of America, Electronic Service Division, 6600 Orangethorpe Ave,

Buena Park, CA 90620

* This applies only to products distributed by YAMAHA

CORPORATION OF AMERICA.

IMPORTANT NOTICE FOR

THE UNITED KINGDOM

Connecting the Plug and Cord

WARNING: THIS APPARATUS MUST BE EARTHED

IMPORTANT: The wires in this mains lead are coloured in accordance with

the following code:

GREEN-AND-YELLOW : EARTH

BLUE : NEUTRAL

BROWN : LIVE

As the colours of the wires in the mains lead of this apparatus may not

correspond with the coloured markings identifying the terminals in your

plug, proceed as follows:

The wire which is coloured GREEN and YELLOW must be connected to

the terminal in the plug which is marked by the letter E or by the safety earth

symbol or coloured GREEN and YELLOW.

The wire which is coloured BLUE must be connected to the terminal which

is marked with the letter N or coloured BLACK.

The wire which is coloured BROWN must be connected to the terminal

which is marked with the letter L or coloured RED.

* This applies only to products distributed by YAMAHA KEMBLE

MUSIC (U.K.) LTD.

MX12/4

1

MX12/4—Owner’s Manual

Thank you for purchasing the Yamaha MX12/4 mixing console. The

MX12/4 is a 12 in/4 group out mixer that provides an ideal balance of

operability, functionality, and simplicity.

In order to take full advantage of the MX12/4’s functionality and to enjoy

long and trouble-free use, please read this owner’s manual before use, and

keep it for future reference.

Features

• The MX12/4 provides 12 input channels, and

mixes them to stereo or to four group outputs.

• A C-R OUT jack is provided for convenient con-

nection to a sub amp for monitoring. You can

monitor the main stereo output, the TAPE IN

input, and the effect/monitor signals.

• A digital effect unit is built-in, allowing you to cre-

ate a polished mix without the need for additional

equipment.

• Two SEND jacks are provided: the MONO 1 jack

(pre fader) and the EFFECT/MONO 2 jack (post/

pre fader). These can be used as sends for external

effects or a monitor system.

• Phantom power is provided, so that condenser

microphones requiring an external power supply

can be easily connected.

• INS I/O jacks are provided for input channels 1-4,

allowing individual effects to be inserted into each

channel.

• Input channels 1-8 provide both XLR type mic

inputs and TRS phone line inputs. Channels 9-12

provide stereo line inputs. The MX12/4 accommo-

dates a wide range of sources, from microphones to

line level devices and stereo output synthesizers.

• TAPE IN jacks and REC OUT jacks make it easy to

connect tape decks for playback and recording.

Contents

Front panel………………………………………….2

Channel control section …………………………2

Master control section……………………………4

Connector section…………………………………6

Rear panel…………………………………………..8

Application Example……………………………..9

Specifications…………………………………….10

General specifications…………………………. 10

Input specifications ……………………………..11

Output specifications…………………………… 11

Dimensions ……………………………………….. 12

Block and Level diagram……………………… 13

2

Front panel

MX12/4—Owner’s Manual

Front panel

Channel control section

1

GAIN control

Use this knob to adjust the sensitivity according to the input sig-

nal level, so that the input level is appropriate.

For the best balance of S/N ratio and dynamic range, adjust this

knob so that the peak indicator

2

lights occasionally.

~ indicates the MIC input adjustment level, and –34~

+10 indicates the LINE input adjustment level.

2

PEAK indicator

This detects the peak level post EQ.

The indicator will light red 3dB before clipping, warning that

clipping level is near.

3

Equalizer

This provides

±

15dB of control over the high, mid and low

ranges at the following center frequencies.

HIGH : 12kHz (shelving)

MID : 2.5kHz (peaking)

LOW : 80Hz (shelving)

The frequency response will be flat when the knob is in the “

▼

”

position.

4

MONI (monitor) control

This knob controls the level of the signal that is sent from each

channel to the MONI bus.

Since this control is placed before the channel fader, it controls

the level independently from the channel fader setting.

5

EFFECT control

This knob controls the level of the signal that is sent from each

channel to the EFFECT bus.

Since this control is placed after the channel fader, the signal

level will be affected by the channel fader setting.

9

10

2413

10

5

0

5

10

15

20

30

40

00

1

2

3

4

+10

-34

GAIN

HIGH

MID

LOW

MONI

EFFECT

BAL

PEAK

0

10

0

10

1

2413

1

2

3

4

10

5

0

5

10

15

20

30

40

00

-16

-60

+10

-34

PAN

GAIN

HIGH

MID

LOW

MONI

EFFECT

PEAK

0

10

0

10

Channels 1~8

(monaural)

Channels 9~12

(stereo)

1

2

3

4

5

6

7

8

-15

+15

-15

+15

-15

+15

-15

+15

-15

+15

-15

+15

–60

–16

Response [dB]

+5

+10

+15

–15

–10

–5

0

Frequency [Hz]

10k1k100 20k20

+20

–20

Channel control section

3

MX12/4—Owner’s Manual

6

Group select switches

These switches send the signal of each channel to GROUP buses 1~4.

When the / switches are on (pressed in), the signal will be sent to the GROUP buses 1/2.

When the / switches are on (pressed in), the signal will be sent to the GROUP buses 3/4.

When both switches are on, the signal will be sent to GROUP buses 1/2 and 3/4.

7

PAN (panpot) control

BAL (balance) control

The PAN knobs (channels 1~8) set the stereo position of the signal that is sent to the GROUP

buses 1/2 or 3/4.

The BAL knobs (channels 9~12) set the balance between the left/right channels, and assign

the signals received at inputs 9 L (MONO) and 11 L (MONO) to the GROUP buses 1/3, and

the signals received at inputs 10 R and 12 R to the GROUP buses 2/4.

If signals are input monaurally to input 9 L (MONO) or 11 L (MONO), the same signal will

be sent to groups 1~4.

8

Channel fader

This controls the output level of the input channel signal, adjusting the volume balance

between channels. The faders of unused channels should be lowered.

1 2

3 4

EFFECT

MONI

EFFECT

MONI

PEAK

PEAK

PHANTOM

GAIN

LOW

MID

HIGH

BAL

R

L(MONO)

EQHA

INPUT

9/10

11/12

HA EQ

LOW

MID

EQ

GAIN

HA

HIGH

PAN

PAD

MIC

LINE

INPUT

5-8

EFFECT

MONI

MONI

EFFECT

INPUT

1-4

LINE

MIC

INS

I/O

PAD

PHANTOM

MASTER

GROUP

4321

PAN

HIGH

HA

GAIN

EQ

MID

LOW

PEAK

4

Front panel

MX12/4—Owner’s Manual

Master control section

1

ST OUT output select switch

This switch selects the signal which is output via the

ST

fader from the ST OUTPUT jacks.

ST position ( )

The ST OUTPUT jacks will output the ST bus signal

(the post-fader signals of groups 1~4, the input signals

from the RTN jacks, the return signal from the internal

digital effect, and the input signal from the TAPE IN

jacks).

GROUP position ( )

The ST OUTPUT jacks will output the pre-fader sig-

nals of groups 3/4.

When this position is selected, the input channel sig-

nals will be sent directly to the ST bus without passing

through the group buses 1~4. This setting lets you use

the MX12/4 as a simple 12 in-2 out mixer.

2

ST master fader

This fader adjusts the final combined level of all chan-

nels, and sends the signal to the ST OUTPUT jacks.

The meters allow you to view the L and R output levels.

3

GROUP 1~4 faders

These faders adjust the signal levels of groups 1~4, and

send their signals to GROUP OUTPUT 1~4 jacks

respectively and to the ST bus.

Groups 1 and 3 are sent to ST L, and groups 2 and 4 are

sent to ST R.

4

Stereo graphic EQ

This is a stereo 7-band graphic equalizer that adjust the

tonal quality of the signal output to the ST OUTPUT

jacks.

A

±

12dB boost or cut is provided at each of the fre-

quency bands 125, 250, 500, 1k, 2k, 4k, and 8kHz.

5

TAPE IN jacks

These are line level input jacks to which an external DAT recorder or CD player etc. can be

connected for monitoring. The signals which are input here are sent to the ST bus. The input

levels are adjusted by the TAPE IN ST control (

9

). Depending on the setting of the C-R•

PHONES select switch (

D

), the signal can also be monitored directly from the C-R OUT jack.

6

REC OUT jacks

These jacks allow an external DAT recorder or cassette recorder to be connected, to record the

same signal as the ST OUTPUT jacks.

The signals that are output from these jacks are not affected by the settings of the ST master

fader or the graphic EQ. Make recording level adjustments on the recording device.

7

PHANTOM indicator

This indicator will light when the PHANTOM switch (rear panel

2

) is on.

8

POWER indicator

This indicator will light when the MX12/4’s power is on.

ST

GROUP 4

GROUP 3

GROUP 2

GROUP 1

010

3

4

ST

GROUP

EFFECT

MONI2

METER

C-R•PHONES

TAPE IN

ST

EFFECT

⁄ MONI

C-R•PHONES

010

010

010

010

010

010

ST

MONI

SEND

RTN

MONI 1MONI

EFFECT ⁄ MONI 2

ST

TAPE IN

ST

010

LR

L

R

TAPE IN

REC OUT

PHANTOM POWER

ON

VOCAL

L HALL S HALL

DIGITAL

EFFECT

MONI 1

EFFECT

/ MONI 2

L

R

PEAK

+5

+3

+1

0

-1

-3

-5

-7

-10

-15

-20

ST GRAPHIC EQUALIZER

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

10

5

0

5

10

15

20

30

40

00

+12

-12

6

0

6

+12

-12

6

0

6

8k4k

2k

1k

500

250

125

3

AB

1

2

4

5

6

78

9

0

C

3 4

Master control section

5

MX12/4—Owner’s Manual

9

ST control

This knob adjusts the monitor level of the external device (tape deck etc.) connected to the

TAPE IN jacks (

5

).

0

DIGITAL EFFECT

MONI control

—This knob adjusts the level of the return signal which is sent from the inter—

nal digital effect to the MONI bus.

ST control

—This knob adjusts the level of the return signal which is sent from the internal

digital effect to the ST bus.

Effect select switches

—These switches select the effect type for the internal digital effect:

VOCAL, L HALL (large hall), or S HALL (small hall).

Do not attempt to turn off all switches or to simultaneously press two or more switches, since

this will cause malfunctions.

ON switch

—This switch turns the internal digital effect on/off. When this is off, no signal will

be sent from the internal digital effect.

A

RTN

MONI control

—This knob adjusts the level of the signal that is sent from the RTN jacks to the

MONI bus.

ST control

—This knob adjusts the level of the signal that is sent from the RTN jacks to the ST

bus. If a signal is input only to the RTN L (MONO) jack, the same signal will be sent to the ST

bus L and R.

B

SEND

MONI 1 control

—This knob adjusts the level of the MONI bus signal that is output to the

SEND MONI 1 jack.

EFFECT/MONI 2 control

—This knob adjusts the level of the EFFECT bus or MONI bus sig-

nal that is output to the SEND EFFECT/MONI 2 jack.

The level of the signal that is sent from the EFFECT bus to the internal digital effect is fixed,

and cannot be adjusted (nor by this control).

Output select switch

—This switch selects the signal that will be output to the SEND EFFECT/

MONI 2 jack.

EFFECT position

()

—The EFFECT bus signal will be output.

MONI 2 position

()

—The MONI bus signal will be output.

C

C-R•PHONES

Here you can select and adjust the signal that is output to the C-R OUT jack and the PHONES

jack.

C-R•PHONES control

— This knob adjusts the output level to the C-R OUT jack and

PHONES jack.

Output select switch

—These switches select the output signal for the C-R OUT jack and

PHONES jack.

•

When the upper switch is on (TAPE IN ), the signal from the TAPE IN

jacks will be output.

•

When the upper switch is off ( )

• When the lower switch is off (ST ), the same signal as the ST OUT—

PUT jacks will be output.

• When the lower switch is on (EFFECT/MONI ), the signal of the

SEND MONI 1 jack will be sent to the L channel, and the SEND

EFFECT/MONI 2 signal will be sent to the R channel.

Meter

—The LEDs indicate the output level before the C-R•PHONES control. A position of 0

indicates nominal level, and when clipping level is approached, PEAK will light red as a warn-

ing.

6

Front panel

MX12/4—Owner’s Manual

Connector section

1

INPUT

MIC (1~8)

—These are balanced XLR type mic input jacks (1: ground, 2: hot, 3: cold).

These inputs are compatible with 50~600

Ω

microphones.

LINE (1~8)

—These are balanced TRS phone type line input jacks (T: hot, R: cold, S:

ground).

These inputs are compatible with 600 ohm line level devices.

It is also possible to connect unbalanced phone plugs, but noise may enter the signal if the

cables are long or if the location is susceptible to electromagnetic interference.

INS I/O 1~4

—These are input/output jacks placed between the equalizer and fader of input

channels 1~4.

The nominal input level/impedance is 0dB/600

Ω

, and the nominal output level/impedance is

0dB/10k

Ω

.

Devices such as graphic equalizers, compressors or noise filters can be connected here.

The INS I/O jacks provide bi-directional connections using TRS (tip, ring, sleeve) phone

jacks. These connections require a special insertion cable such as shown in the following dia-

gram.

Note:

It is not possible to connect both the MIC INPUT jack and the LINE INPUT jack for

an individual input channel. Only one or the other jack may be used.

PHONES

L(MONO)

R

C-R OUT

ST OUTPUT

RTN SEND

GROUP

OUTPUTINPUT INPUT

L

(MONO)

R

L

(MONO)

R

EFFECT MONI

2

1

2

3

4

MONI

1

PHANTOM +48V

ON

MIC

INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT

LINE LINELINE LINE LINE LINE LINE LINE

INS

I ⁄ O

INS

I ⁄ O

INS

I ⁄ O

INS

I ⁄ O

INSERT I/O

OUT IN

9

10

11

12

12345678

MIC

MIC

MIC

MIC

MIC

MIC MIC

L

R

OFF

2135

4687

to the input jack of

the external processor

to the output jack of

the external processor

to the INS I/O jack

Tip

Tip

Ring

Sleeve

Sleeve

Connector section 7

MX12/4—Owner’s Manual

2 RTN L (MONO), R

These are unbalanced phone type line input jacks, with a nominal input level and impedance

of +4dB/600Ω.

The signals which are input from these jacks are sent to the ST bus and the MONI bus.

Normally, these jacks are used to receive the return signal from an external effect device such

as reverb or delay, but they can also be used as auxiliary stereo inputs. If only the L (MONO)

jack is connected, the same signal will be sent both to the R jack and L jack, for monaural

input.

3 SEND MONI 1, EFFECT/MONI 2

These are unbalanced phone type output jacks. The nominal input level and impedance are

+4dB/600Ω.

The MONI 1 jack outputs the MONI bus signal, and the EFFECT/MONI 2 jack outputs the

signal of the EFFECT bus or MONI bus. These are used to send signals to an external effect

unit or to a monitor system such as a cue box.

4 INPUT 9~12

These are unbalanced phone type stereo line input jacks, compatible with 600Ω line level

devices.

If only the L (MONO) jack is connected, the same signal will be sent both to the L and R jacks,

for monaural input. In this case, the group select switch (channel control section 6) will send

the same signal to the group buses 1/2 or 3/4.

5 ST OUTPUT (L, R)

These are balanced XLR type output jacks with a nominal output/impedance of +4dB/600Ω.

They provide stereo output of the mixed signal, and are normally connected to a power amp

etc. which drives the main speakers.

These outputs can also be used in order to record the signal at a level adjusted by the ST fader.

6 GROUP OUTPUT 1~4

These are unbalanced phone type output jacks which output the signals of group buses 1~4,

with a nominal output/impedance of +4dB/600Ω. Normally these are connected to the input

jacks of an MTR or an external mixer.

7 C-R OUT

This is a stereo phone type output jack for connection to a monitor system etc., with a nomi-

nal output/impedance of +4dB/10kΩ.

The source monitored by this jack is selected by the C-R•PHONES output select switch (mas-

ter control section C).

8 PHONES

This is a stereo phone type output jack for connecting a set of headphones.

The source monitored by the headphones is selected by the C-R•PHONES output select

switch (master control section C).

Note: An insertion cable can also be used when connecting this jack to a stereo monitor sys-

tem.

8 Rear panel

MX12/4—Owner’s Manual

Connector polarity

Rear panel

1 POWER switch

When this is on, power is applied to the unit.

When turning off the power, the rule for audio equipment is to turn off devices in the order of

their closeness to the speakers (normally beginning with the power amp).

2 PHANTOM switch

This switch turns the phantom power on/off for all channels 1~8.

Use this when you are using condenser microphones.

When this switch is on, +48V DC will be supplied to pins 2 and 3 of all XLR type MIC INPUT

connectors.

If you do not require phantom power, be sure to set this in the OFF position.

MIC INPUT

ST OUTPUT

Pin 1: ground

Pin 2: hot (+)

Pin 3: cold (–)

LINE Input

Tip: hot (+)

Ring: cold (–)

Sleeve: ground

INS I/O

Tip: Output

Ring: Input

Sleeve: ground

C-R OUT

Tip: L

Ring: R

Sleeve: ground

Stereo Input

RTN

GROUP OUTPUT

SEND MONI1

SEND EFFECT/MONI2

Tip: hot

Sleeve: ground

Note: Although it will not cause problems to connect balanced dynamic microphones or line

level devices with this switch turned on, connecting unbalanced devices or devices for which

the center of the transformer is ungrounded may cause hum or malfunction.

PHANTOM MASTER

CH1 ~ 8

ON OFF

(+48V)

POWER

ON ⁄ OFF

21

Phantom Power Warning

To prevent hazard or damage, connect

only microphones and cables that

conform to the IEC268-15A standard.

10 Specifications

MX12/4—Owner’s Manual

Specifications

■ General specifications

Frequency response

20Hz~20kHz+1dB, –2dB @+4dB

Input Gain control at minimum level

Total harmonic distortion

<0.1%@+14dB 20Hz~20kHz

Hum and noise

(Rs=150Ω, 20Hz~20kHz)

–128dB equivalent input noise

–95dB residual output noise

–87dB (ST OUT/GROUP OUT)

ST master/GROUP fader at nominal level and all

channel fader at minimum.

–64dB (68dB S/N)

(ST OUT/GROUP OUT)

ST master/GROUP fader at nominal level

One channel fader, Gain control: maximum.

Fader: nominal

–80dB (MONITOR1 OUT, EFFECT/

MONITOR2 OUT)

Master level control at nominal level and all channel

level controls at minimum.

–64dB (68dB S/N)

(MONITOR1 OUT, EFFECT/MONITOR2

OUT)

Master fader at nominal level

One channel fader, Gain control: maximum.

Fader: nominal

Control level: nominal

Maximum voltage gain

84dB MIC IN to GROUP OUT

58dB LINE IN to GROUP OUT

90dB MIC IN to EFFECT/MONITOR2 OUT

80dB MIC IN to MONITOR1 OUT

Crosstalk at 1kHz

70dB adjacent input

70dB input to output

Gain control 44dB variable

Input channel equalization

±15dB Maximum

HIGH 12kHz shelving

MID LOW 2.5kHz peaking

LOW 80Hz shelving

* Turn over/Roll off frequency of shelving: 3dB below maximum variable level

Meters 12 points LED

Channel peak indicators An indicator for each channel turns on when the pre-channel fader signal is 3dB below clipping.

Graphic equalizer

7 bands (125, 250, 500, 1k, 2k, 4k, 8kHz)

±12 Maximum

Internal digital effect 3 types

Phantom power +48V (balanced)

Option Rack Mount Kit RK124

Power supply/

Power consumption

USA and Canadian 120V AC 60Hz, 30W

General 230V AC 50Hz, 40W

Dimensions (WxHxD) 436.2×83.1×401.2mm

Weight 7.0kg

Input specifications 11

MX12/4—Owner’s Manual

■ Input specifications

■ Output specifications

1. Sensitivity is the lowest level that will produce an output of +4 dB (1.23V) or the nominal output level when the unit is set to maximum gain.

2. XLR type connectors and phone jacks (TRS) (T=Hot, R=Cold, S=Gnd) are balanced.

3. Phone jacks are unbalanced.

4. Phone jacks (I/O) (T=OUT, R=IN, S=GND) are unbalanced.

• 0dB=0.775Vrms, 0dBV=1Vrms

1. XLR type connectors are balanced.

2. Phone jacks are unbalanced.

3. ST phone jacks (T=L, R=R, S=GND) are unbalanced.

4. Phone jacks (I/O) (T=OUT, R=IN, S-GND) are unbalansed.

• 0dB=0.775Vrms, 0dBV=1Vrms

Input

connectors

Gain

trim

Input

impedance

Nominal

impedance

Input level

Connector type

Sensitivity

1

Nominal level

Max. before

clipping

MIC INPUT

(1-8)

MAX

MIN

5kΩ 50~600Ω mic

–90dB (24.5µV)

–36dB (12.3mV)

–60dB (775µV)

–16dB (123mV)

–40dB (7.75mV)

+4dB (1.23V)

XLR3-31 type

2

LINE INPUT

(1-8)

MAX

MIN

50kΩ 600Ω line

–64dB (490µV)

–10dB (245mV)

–34dB (15.5mV)

+10dB (2.45V)

–14dB (155mV)

+30dB (24.5V)

Phone jack (TRS)

2

ST INPUT

(9-12)

MAX

MIN

10kΩ 600Ω line

–54dB (1.55mV)

–10dB (245mV)

–34dB (15.5mV)

+10dB (2.45V)

–14dB (155mV)

+30dB (24.5V)

Phone jack

3

RTN (L•R) 10kΩ 600Ω line –12dB (195mV) +4dB (1.23V) +20dB (7.75V)

Phone jack

3

TAPE IN (L•R) 10kΩ 600Ω line –26dBV (50.1mV) –10dBV (316mV) +18dBV (7.75V) RCA pin jack

INS I/O (1-4) 10kΩ 600Ω line –20dB (77.5mV) 0dB (775mV) +20dB (7.75V) Phone jack (I/O)

4

Output connector

Output

impedance

Nominal

impedance

Output level

Connector type

Nominal

Max. before clipping

ST OUTPUT (L•R) 150Ω 600Ω Lines +4dB (1.23V) +24dB (12.3V) XLR-3-32 type

1

GROUP OUTPUT (1-4) 75Ω 600Ω Lines +4dB (1.23V) +20dB (7.75V) Phone jack

2

MONITOR1 OUT 75Ω 600Ω Lines +4dB (1.23V) +20dB (7.75V)

Phone jack

2

SEND MONI1,

EFFECT/MONI2

75Ω 600Ω Lines +4dB (1.23V) +20dB (7.75V)

Phone jack

2

C-R OUT 470Ω 10kΩ Lines +4dB (1.23V) +20dB (7.75V) ST phone jack

3

REC OUT (L•R) 600Ω 10kΩ Lines –10dBV (316mV) +10dBV (3.16V) RCA pin jack

PHONES 100Ω 40Ω Phones 3mW 100mW ST phone jack

INS I/O (1-4) 600Ω 10kΩ Lines 0dB (775mV) +20dB (7.75V) Phone jack

4

12 Specifications

MX12/4—Owner’s Manual

■ Dimensions

Specifications are subject to change without prior notice.

W:436.2

310

H:83.1

3.2

76.6

D:401.2

13.5

320

Units mm

Block and Level diagram 13

MX12/4—Owner’s Manual

■ Block and Level diagram

EFFECT

EFFECT

GROUP,EFFECT,MONITOR

EFFECT,MONITOR

GROUP,ST

EFFECT,MONITOR,TAPE

(from EFFECT)

7 BAND ST GEQ

7 BAND ST GEQ

ST

ST

INS

MONI

ST

REC

ST

TAPE

RTN

MIC

MIC

LINE

LINE

GROUP 3 4

ST

ST

OUTPUT

EFFECT

MONI

MONI

ST

–50

–40

–30

–20

–10

0

10

20 20

10

0

–10

–20

–30

–40

–50

–60–60

EFFECT

/MONI

PEAK

PEAK

PHANTOM

TAPE IN

(to DSP)

ON

S HALL

L HALL

VOCAL

DSP

ST

MONI

RTN

L(MONO)

R

PAD

EFFECT

MONI 2

EFFECT/

MONI 2

MONI 1

SEND

EFFECT/

MONI 2

MONI 1

PAD

REC OU

L

R

R

L

8k4k

250125

ST

C-R.PHONES

C-R OUT

GROUP 4

GROUP 3

4

3

GROUP

OUTPUT

2

1

GROUP 2

ST

GAIN

LOW

MID HIGH

BAL

R

L(MONO)

EQHA

INPUT

9/10

11/12

HA EQ

LOW

MID

EQ

GAIN

HA

HIGH

PAN

PAD

MIC

LINE

INPUT

5-8

EFFECT

MONI

MONI

EFFECT

INPUT

1-4

LINE

MIC

INS

I/O

PAD

PHANTOM

MASTER

GROUP ST

TAPE IN

PHONES

R

L

GROUP 1

RL4321

PAN

HIGH

HA

GAIN

EQ

MID

LOW

PEAK

VV68420 R0 1 IP YAMAHA CORPORATION

P.O.Box 1, Hamamatsu, Japan

96 09 700 NP Printed in Taiwan

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