﻿YAMAHA
POWERED MIXER 
EMX2 Owner's Manual

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Yamaha Pro Audio global website:
http://www.yamahaproaudio.com/
Yamaha Downloads
http://download.yamaha.com/

Introduction
Thank you and congratulations on your purchase of the Yamaha Powered Mixer EMX2. Please read this manual thoroughly to get the most out of the product and ensure long-term, trouble-free use. After reading this manual, keep it readily available for future reference.
* Please read the "Precautions" on the back.

Main Features
500-watt power amplifier for versatility in a wide variety of performance applications
10-channel mixer with four mono mic/line and three stereo line input channels, supporting a wide range of inputs
Yamaha's high-quality SPX reverb, providing optimum processing for instruments or vocals
Feedback Suppressor, which automatically cuts and prevents undesirable feedback noise
Independent three-band equalizer on each channel for tonal adjustment and sound control

Accessories (Please check that they are included with your powered mixer.)
AC power cord (2 m)
Technical Specifications (English only): Includes general specifications, input/output characteristics, a block diagram, dimensions, and a jack and plug list.
Owner's Manual (this leaflet)

Quick Start Guide

Setup
1	Make sure that all switches, including the mixer's power switch, are not on (OFF).

Connecting speakers, microphones, instruments, and audio devices
2	Refer to the connection example in the illustration below.

Connection Example
(Figure)
(Caption)
Microphones
Microphones
Electric acoustic guitar
Electric guitar
Keyboard
Audio device
Portable audio player
Footswitch (Yamaha FC5)
See "Precautions for Connecting the Speakers" below.
Passive speakers (Impedance: 8 ohm)
Set to "8ohm" if speakers are connected as shown in the figure above. 

Precautions for Connecting the Speakers   
You must set the [IMPEDANCE SELECT] switch correctly according to the connection method and number of speakers. Be sure that the impedance of your speakers is no less than the impedance that you set on the mixer. Setting this switch incorrectly could result in damage to the mixer/your speakers.
(Table)
Actual speaker impedance* 	[IMPEDANCE SELECT] switch
4 ohm to less than 8 ohm	Set to "4ohm."
8 ohm and over	Set to "8ohm."
If you are unsure of the impedance of the connected speakers	Set to "4ohm."
(Table End)
* For parallel connections: synthetic impedance
Make sure to insert the speaker cables all the way inside until secure. Failure to do so may result in damage to your equipment.
Use speaker cables with an insulated-housing connector.
(Figure)
(Caption)
6 ohm
Set to "4ohm."
Parallel connection
8 ohm
8 ohm
Set to "4ohm."

Getting sound to the speakers
3	Connect the included power cord.   
First, connect it to the mixer's [AC IN] jack, then to a power outlet.
NOTE	Reverse the order when removing the power cord.
(Figure)

4	Turn the mixer's [LEVEL] controls (white knobs) and [MASTER LEVEL] control (red knob) to the minimum (zero). Also, set the equalizer controls (green knobs) to the center "TRIANGLE" or "MUSIC" position.
(Figure)
(Caption)
Equalizer

5	Set the [(OFF) MIC/(ON) LINE] switch to the "(OFF) MIC" position for microphone connection, and to the "(ON) LINE" position for connection of an instrument or audio device.
NOTE	If you are using condenser microphones,  turn on the [PHANTOM (CH1/2)] switch.
(Figure)

6	Turn on the power of the connected sound source (if applicable), then the mixer.
The [POWER] LED lights.
WARNING
To avoid any loud, unexpected noise from the speaker, first turn off the power to the mixer, then the connected sound source (such as an instrument or audio device).
(Figure)

7	For channels to which a microphone, instrument, or audio device is connected, set [LEVEL] to the "TRIANGLE" position.   
(Figure)

8	While outputting sound from the microphone, instrument, or audio device, slowly turn the [MASTER LEVEL] to the right until you reach the optimal volume.   
(Figure)

9	Adjust [LEVEL] on each channel as necessary to set the volume balance between the microphone, instrument, and audio device.  
(Figure)

Making optimum volume settings

When the volume is too loud
Turn the [LEVEL] control to the minimum (zero). Set the [(OFF) MIC/(ON) LINE] switch to the "(ON) LINE" position, then slowly raise the [LEVEL] control until the desired volume is reached.
When the volume is too soft
Turn the [LEVEL] control to the minimum (zero). Set the [(OFF) MIC/(ON) LINE] switch to the "(OFF) MIC" position, then slowly raise the [LEVEL] control until the desired volume is reached.
(Figure)

Applying Reverb
The EMX2 features a built-in reverb processor that is in the same league as our famed SPX effect processor series. This reverb lets you simulate the acoustics of different performance environments, such as concert halls and small clubs, and add warm, natural ambience to your vocals or instrument performance.

1	Press the [REVERB] button to turn it on.
The LED lights when REVERB is on.   
2	Turn the REVERB [TYPE/TIME] control to the desired reverb type and time (length).
Turning the control to the right lengthens the time of the selected reverb type.
(FIgure)
(Caption)
Long
Short
3	Use the [REVERB] control to adjust the reverb amount of the corresponding channel.
If necessary, repeat steps 2 and 3 to determine the optimum reverb setting.
(FIgure)

Controls and Functions
(Figure)

1	Mic/Line input jacks (channels 1 to 4)
Connect microphones, guitars, electronic musical instruments or audio devices. Channels 3 and 4 provide combo jacks that support both XLR and phone plugs.
(Figure)
XLR
Phone

2	[(OFF) MIC/(ON) LINE] switches (channels 1 to 4)
For low-level signals (including microphones), set the switch to the "(OFF) MIC" position. For high-level signals (including electronic instruments and audio devices), set the switch to the "(ON) LINE" position.

3	[Hi-Z] switch (channel 4)
This switch is used when connecting a device directly to the mixer without a DI (direct injection box) — for example, instruments with passive pickups, such as an acoustic-electric guitar or electric bass without battery. This function is effective only for the phone jack input.

4	[LINE] input jacks (channels 5/6, 7/8, 9/10)
Connect line-level devices such as electronic instruments, acoustic-electric guitars, CD players, and portable audio players. These jacks support phone, RCA-pin, and stereo-mini plugs.
(Figure)
RCA-pin
Stereo-mini

NOTE	For the channel 7/8 input, if both phone and RCA-pin jacks are used at the same time, the phone jack will take priority. For the channel 9/10 input, if both phone and stereo-mini jacks are used at the same time, the stereo-mini jack will take priority. The signal from the device connected to another jack will be muted.

5	[MONITOR OUT] jacks
These are for connection to a powered speaker for monitoring purposes, and output a mix of the signals from channels 1 to 9/10. You can adjust the output level using the [MONITOR OUT] control 11. If only the [L (MONO)] jack is used, the signals from the L and R channels are mixed and output.

6	[SUBWOOFER OUT] jack
This is for connection to a powered subwoofer, and outputs a mono signal. If this jack is in use, the low frequencies below 120 Hz to the [SPEAKERS L/R] jacks will be cut. The output level is linked to that of the [MASTER LEVEL] control (22).

7	[REVERB FOOT SW] jack
This is for connection to an unlatched-type footswitch such as the Yamaha FC5 — useful for solo performers, since you can toggle the reverb on and off as needed with your foot.

8	[SPEAKERS L/R] jacks
Use commercially available speaker cables to connect the speakers.

9	[IMPEDANCE SELECT] switch
Set this switch to match the impedance of the connected speakers. If you are unsure of the impedance of the connected speakers, set this switch to "4ohm". Changing this setting changes the maximum output from the amp and changes the conditions for which the [LIMITER] LED comes on.
NOTICE
Make sure the power switch is off before changing the setting of this switch.
Setting this switch incorrectly could result in damage to the mixer/your speakers.

10	[PHANTOM (CH1/2)] switch/LED
When this switch is on, the LED lights indicating that phantom power is available for channels 1 and 2. Turn this switch on to supply power to condenser microphones or a DI (direct injection box).
NOTICE
Follow the important precautions below, in order to prevent noise and possible damage to external devices and the mixer when you operate this switch.
Be sure to leave this switch off if you do not need phantom power, or when you connect a device that does not support phantom power to channels 1 and 2.
Do not connect/disconnect a cable to/from channel 1 or 2 while this switch is on.
Turn the [LEVEL] control of channels 1 and 2 to the minimum before operating this switch.

11	[MONITOR OUT] control
Determines the signal level output from the [MONITOR OUT] jacks (5). The [MASTER LEVEL] control does not affect the [MONITOR OUT] signal.

12	Equalizer controls [HIGH, MID, LOW]
The equalizer shapes the [HIGH], [MID], and [LOW] audio frequencies. Turning the control to the right amplifies (boosts) the corresponding frequency band, while turning it to the left attenuates (cuts) the band. Setting the control to the "TRIANGLE" position produces a flat response in the corresponding band.

13	[REVERB] button/LED
When this button is on, the LED lights indicating that you can apply reverb. This button is off when you turn on the mixer. (Unlike other switches, this button cannot be locked.)

14	REVERB [TYPE/TIME] control
Determines the reverb type and its length. Turning the control to the right lengthens the time of the selected reverb type.
"HALL": 	Simulated reverb of a large space, such as a concert hall.
"PLATE": 	Simulated metal plate reverb, producing a more hard-edged and bright sound.
"ROOM": 	Simulated acoustic ambience of a small room.
"ECHO":	Echo effect suitable for vocals.

15	[REVERB] controls (channels 1 to 4)
Determines the amount of reverb for each channel when the [REVERB] button (13) is on.

16	[(OFF) STEREO /(ON) MONO] switches (channels 5/6, 7/8, 9/10)
Setting the switch to "(OFF) STEREO" will assign the signals from the L and R channels to each left and right speaker and output each signal. Setting the switch to "(ON) MONO" will mix the output of different L and R sources to output the same signal to both the left and right speakers. For keyboards with mono output, guitars, or other non-stereo sound sources, when the switch is set to "(ON) MONO", the stereo jacks can be conveniently used as multiple mono jacks.

17	Level meter
The level meter shows the level of output signal from the [SPEAKERS L/R] jacks.
NOTICE
If used at a high volume so that the [LIMITER] LED flashes continuously, the internal power amplifier section is being excessively overloaded and may malfunction. Reduce the output level with the [MASTER LEVEL] control so that the indicator flashes only briefly on the highest transient peaks.

18	[POWER] LED
This LED lights when the power is turned on by pressing the power switch.

19	[FEEDBACK SUPPRESSOR] switch/LED
When this switch is on, the LED lights indicating that feedback is automatically suppressed. (This utilizes a seven-band notch filter. When this switch or the power switch is off, the notch filter will be reset.)

20	[LEVEL] controls
Use these controls to adjust the volume for each channel. To reduce noise, set any [LEVEL] controls on unused channels to the minimum.

21	[MASTER EQ] control
Use this control to adjust the overall sound frequency balance. The center position "MUSIC" is a basic setting and if you turn the control to the left, this creates an optimum setting for speech, cutting unneeded low range frequencies. If you turn the control to the right, it creates an optimum setting for playback of sound sources, since the low range is boosted. If you turn the control further to the right, the [BASS BOOST] LED lights indicating that the bass boost function is active, giving you an even more powerful bass tone.

22	[MASTER LEVEL] control
Determines the volume of the signal output from the [SPEAKERS L/R] and [SUBWOOFER OUT] jacks. This allows you to adjust the overall volume without changing the relative volume balance among the various channels.

23	Vents
There are vents located on both sides of the mixer, and a cooling fan is installed on the exhaust side. Do not block the vents on either side when using the mixer.

24	[AC IN] jack
Connect the included power cord here.

25	(Power) switch
For turning the power of the mixer on and off.
NOTICE
Rapidly turning the mixer on and off in succession can cause it to malfunction. After turning the mixer off, wait for about 10 seconds before turning it on again.

Rack Mounting
1	Use a screwdriver to loosen and remove the screws (4) on the handles installed on the mixer.
(Figure)
NOTE	The EMX2 requires at least 6 U of rack space. To take into account the cable connections, we recommend to ensure 7 U of rack space.

2	Use the screws you removed in Step 1 to securely install the RK-EMX2 Rack-Mount Kit (sold separately) on the mixer.
Orient the RK-EMX2 rack-mount brackets with the engraved lettering facing toward the rear.
(Figure)
(Caption)
Orient the rack-mount bracket with the engraved lettering facing toward the rear.
The mixer can be rack mounted without the handles installed.
Orient the rack-mount bracket with the engraved lettering facing toward the rear.

NOTICE
Be sure to use the screws removed in Step 1. Using other screws can cause damage.
NOTE	Separate screws for mounting the mixer in a rack are not included with the mixer.

Precautions for Rack Mounting
This mixer is rated for operation at ambient temperatures ranging from 0 to 40 degrees Celsius. If you install this mixer along with other devices in a poorly ventilated EIA standards rack, the ambient temperature inside the rack may rise, resulting in inefficient performance. Be sure to rack-mount in the following conditions so the mixer does not overheat.

When mounting the mixer in a rack with devices such as power amplifiers that generate a significant amount of heat, leave more than 1U of space between it and other equipment. Also, either leave the open spaces uncovered or install appropriate ventilating panels to minimize the possibility of heat buildup.
To ensure sufficient airflow, leave the rear of the rack open. If you've installed a fan kit in the rack, there may be cases in which closing the rear of the rack will produce a greater cooling effect. Refer to the rack and/or fan kit manual for details.

Mounting to a Microphone Stand  
The mixer can be mounted onto a microphone stand as illustrated at right, by using the optionally available Yamaha BMS-10A Mic Stand Adaptor. For instructions on mounting, refer to the BMS-10A Owner's Manual.
(Figure)

Troubleshooting
Check the following items before contacting a Yamaha dealer. 
If the symptoms are not improved, contact your nearest Yamaha dealer.

Power does not come on.
Did you firmly and securely connect the power cord?

Power shuts down suddenly.
Are the vents of the mixer blocked?
Since inadequate ventilation can result in overheating the mixer, the power may be turned off automatically to prevent overheating. Ensure proper ventilation for cooling, and then turn on the power again.

No sound is heard.
Did you connect the mixer's [SPEAKERS L/R] jacks and the speakers' input jacks using the proper speaker cables?
Did you firmly and securely connect the speaker cables?
Is the [POWER] LED flashing at intervals?
There may be a short in the speaker cable or the connection may be faulty. Check that the speaker cable is not scratched and is connected properly to the mixer, and then turn the power on again.
For channels 7/8, are both phone and RCA-pin jacks connected at the same time? Or, for channels 9/10, are both phone and stereo-mini jacks connected at the same time?
The phone jack has priority for channels 7/8 and the stereo-mini jack has priority for channels 9/10.
Is the [POWER] LED flashing continuously?
If the internal power amplifier section is excessively overloaded, the amplifier will be muted for protection. The mixer will automatically reset itself after a while.

Sound is distorted or noise is produced.
Are the [LEVEL] controls of all relevant channels and/or the [MASTER LEVEL] control set too high?
Is the [(OFF) MIC/(ON) LINE] switch of the corresponding channel set to "(OFF) MIC"?
If the input level from the source is high, setting the [(OFF) MIC/(ON) LINE] switch to "(OFF) MIC" may result in distorted sound. Set the switch to the "(ON) LINE" position.
Is the volume of the device connected to the mixer too high?
Lower the volume of the external device.
Is the speaker cable or power cord located near the input cables?
Please keep speaker cables and the power cord away from the input cables.

Sound is not loud enough.
Are the [LEVEL] controls of all relevant channels and/or the [MASTER LEVEL] control set too low?
Is the [(OFF) MIC/(ON) LINE] switch of the corresponding channel set to "(ON) LINE"?
Turn the [LEVEL] control to the minimum (zero). Next, set the switch to the "(OFF) MIC" position, and then slowly raise the [LEVEL] control.
Is the volume of the device connected to the mixer too low?
Raise the volume of the external device.
Is the [PHANTOM (CH1/2)] switch set to on when using a microphone that requires phantom power?

The high sounds and low sounds are unbalanced.
Are the equalizer controls raised or lowered too much?
Set the equalizer controls to the center position.

NOTICE
To avoid the possibility of malfunction/ damage to the product, damage to data, or damage to other property, follow the notices below.

Handling and maintenance
Do not use the device in the vicinity of a TV, radio, AV equipment, mobile phone, or other electric devices. Otherwise, the device, TV, or radio may generate noise.
Do not expose the device to excessive dust or vibration, or extreme cold or heat (such as in direct sunlight, near a heater, or in a car during the day), in order to prevent the possibility of panel disfiguration, unstable operation, or damage to the internal components.
Do not place vinyl, plastic or rubber objects on the device, since this might discolor the panel.
When cleaning the device, use a dry and soft cloth. Do not use paint thinners, solvents, cleaning fluids, or chemical-impregnated wiping cloths.
Condensation can occur in the device due to rapid, drastic changes in ambient temperature—when the device is moved from one location to another, or air conditioning is turned on or off, for example. Using the device while condensation is present can cause damage. If there is reason to believe that condensation might have occurred, leave the device for several hours without turning on the power until the condensation has completely dried out.
Always turn the power off when the device is not in use.

Connectors
XLR-type connectors are wired as follows (IEC60268 standard): pin 1: ground, pin 2: hot (plus), and pin 3: cold (minus).

Information
About this manual
The illustrations as shown in this manual are for instructional purposes only.
The company names and product names in this manual are the trademarks or registered trademarks of their respective companies.

This is the end of the file.