Yamaha EMX68s, EMX88s User Manual

Owner’s Manual

Keep This Manual For Future Reference.

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The Owner’s Manual Revisions

Thank you for purchasing the Yamaha EMX88S/EMX68S Powered Mixer. Parts of the EMX88S, EMX68S owner’s manual have been
revised. Please refer to the following revisions rather than the corresponding sections of the original owner’s manual.

P.12

MAIN section

F

Level Meter

This LED display shows the level of signals received at the
MAIN (STEREO) jack (input/output panel 7 ).

Note: The SPEAKERS 1 & 2 jacks (rear panel 1 ) out-

put the signals received at the MAIN OUT jack via the
internal power amplifier. Check the output signal level
via the LIMITER indicator (M).

MONITOR section

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P.30

Block and Level diagram

PA

SPEAKERS OUT

MAXIMUM OUTPUT [400W/4Ω]

NOMINAL OUTPUT [80W/4Ω]

+11dB

+4dB

Power Amplifier output section level diagram (bottom right)

These plots show the nominal output and maximum output
levels of signals received at the SPEAKERS jacks. If the output
level is +4dB (Level Meter “0”), the internal power amplifier
will deliver 80W into a 4Ω load. If the output level is +11dB
(LIMITER indicator lights), the internal amplifier will deliver
a maximum of 400W into a 4Ω load. If you are using the
BRIDGE jack, the internal power amplifier will deliver 160W
into an 8Ω load with a +4dB signal and a maximum of 800W
into an 8Ω load with a +11dB signal.

E

+30dB

+20dB

+10dB

0dB

Level Meter

This LED display shows the level of signals received at the
MONITOR OUT jack (input/output panel 7).

Note:

The SPEAKERS 1 & 2 jacks (rear panel 1) out­put the signals received at the MONITOR OUT jack via
the internal power amplifier. Check the output signal
level via the LIMITER indicator (M).

P.13

POWER AMP section

LIMITER indicator

If the output level of signals received
at the SPEAKERS output jacks (out­put of the internal power amplifier)
reaches maximum, the indicator will
light.

Caution:

ly, the internal power amplifier section is being exces­sively overloaded and may malfunction. Reduce the
output level at the Master controls (EJ) below the lev­el that the indicator flashes only briefly on the highest
transient peaks.

If the LIMITER indicator flashes continuous-

M

EMX88S/EMX68S

1

Block and Level diagram

[+4dB]

LED METER (5 point)

MASTER

(CH1-6)

(CH1-8)

STAND-BY

[–6dB]

PAN

EFFECT

[0dB]

BA

LEVEL

[–16dB]

[–10dB]

3-Stage EQ

PAD

[–10dB]

HA

+15V

OFF

ON

PHANTOM

MAIN L

[+4dB]

BA

[–6dB]

7-Stage GEQ

[0dB]

INV

SUM SUM

[–16dB]

MONITOR

Hi

Mid

Lo

(30dB)

[–10dB]

SPEAKERS OUT

1

212

MAIN R

8kHz

8kHz

4kHz

4kHz

2kHz

2kHz

1kHz

1kHz

500Hz

500Hz

250Hz

250Hz

125Hz

125Hz

PAN

[0dB]

BA

LEVEL

[–16dB]

[–10dB]

3-Stage EQ

SUM

[–10dB]

HA

A [400W/4Ω]

[+4dB]

[+4dB]

BA

7-Stage GEQ

[0dB]

SUM

INV

SUM

[–6dB]

EFFECT

Hi

Mid

Lo

PAD

(30dB)

BA

2

1

YSP ON/OFF

MONO

STEREO

MONO BRIDGE

[–6dB]

[–16dB]

MONITOR

L

2

LIMITER

INV

SUM

[–10dBV]

REC OUT

BAL

[0dB]

LEVEL

[–10dB]

3-Stage EQ

[–10dB]

HA

BRIDGE [800W/8Ω]

1

[–7.8dB]

R

BA

BA

[–16dB]

EFFECT

Hi

Mid

Lo

[–6dB]

B [400W/4Ω]

1

212

STEREO

MONO (BRIDGE)

MAIN (L+R)-MON

[–6dB]

[–16dB]

[–16dB]

MONITOR

[0dB]

BA

[–16dB]

3-Stage EQ

BA

2

1

LIMITER

YSP ON/OFF

[+4dB]

MASTER

[0dB]

[0dB]

SUM

[–16dB]

AUX IN

L/MONO

MONITOR

[+4dB]

BA

[–6dB]

7-Stage GEQ

INV

SUM SUM

[0dB]

SUM

[–16dB]

[–10dB]

AUX IN

LED METER (5 point)

8kHz

4kHz

2kHz

1kHz

500Hz

250Hz

125Hz

[–13.8dB]

2TR IN

R

+40dB

+30dB

+20dB

+10dB

0dB

–10dB

–20dB

[80W/4Ω]

SPEAKERS OUT

NOMINAL OUTPUT

TAP SW

MONITOR

EFFECT
MAIN R
MAIN L

MAXIMUM OUTPUT [400W/4Ω]

MAIN OUT [+4dB]

MONITOR (NON-MUTE)
MAIN R (NON-MUTE)
MAIN L (NON-MUTE)

AUX, 2TR [0dB]

MAIN [0dB]

Clip Level [+20dB]

Super Hi-Z PAD:ON [0dB]

MONITOR OUT [+4dB]

EFFECT OUT [+4dB]

REC OUT [–10dBV]

MONITOR [–16dB]

EFFECT [–6dB]

LEVEL

AUX IN [–10dB]

2TR IN [–10dBV]

[–10dB]

LINE IN

Lo-Z PAD:ON [–20dB]

Hi-Z PAD:ON [–10dB]

Lo-Z PAD:OFF [–50dB]

Super Hi-Z [–30dB]

Hi-Z PAD:OFF [–40dB]

MIC [–50dB]

EFF OUT

[+4dB]

[+4dB]

BA

[–6dB]

INV

SUM SUM

[0dB]

[0dB]

BA

BA

[–13.8dB]

[–13.8dB]

2TR IN

[–13.8dB]

IN

R

L

[–10dBV]

[–7.8dB]

2TR IN

[–12dB]

EFF RTN

L0

PROGRAM

[–12dB]

EFF RTN

DIGITAL EFFECT ON

R0

EFFECT
DIGITAL

PARAMETER

TAP

FOOT SW

Low-Z

[–50/–20dB]

6

EMX88S/EMX68S

Hi-Z

[–40/–10dB]

CH INPUT

(CH1-2)

(CH1-4)

Low-Z

[–50/–20dB]

CH INPUT

(CH3-4)

(CH5-6)

Super Hi-Z

[–30/0dB]

MIC

[–50dB]

L/MONO

CH INPUT

(CH5-6)

(CH7-8)

LINE

[–10dB]

R

■

+40dB

+30dB

+20dB

+10dB

0dB

–10dB

–20dB

–30dB

–40dB

–50dB

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

The above statements apply ONLY to those products distributed by Yamaha Corporation of America or its subsidiaries.

• Explanation of Graphical Symbols

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE

COVER (OR BACK). NO USER-SERVICEABLE

PARTS INSIDE. REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

The above warning is located on the
rear of the unit.

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.

The lightning flash with arrowhead symbol
within an equilateral triangle is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magni­tude to constitute a risk of electric shock to
persons.

The exclamation point within an equilat­eral triangle is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.

European Specifications Only

This mark indicates a dangerous electrically live terminal.
When connecting an external wire to this terminal, it is
necessary either to have “a person who have received
appropriate guidance on handling” make the connection or to
use leads or a cord that have been manufactured in such a way

that the connection can be made simply and without problem.

Precautions

WARNING

3

Installation

• Connect this unit’s power cord only to an AC outlet of the type
stated in this Owner’s Manual or as marked on the unit. F ailure
to do so is a fire and electrical shock hazard.

• Do not allow water to enter this unit or allow the unit to
become wet. Fire or electrical shock may result.

• Do not place a container with liquid or small metal objects on
top of this unit. Liquid or metal objects inside this unit are a fire
and electrical shock hazard.

• Do not place heavy objects, including this unit, on top of the
power cord. A damaged po wer cor d is a fire and electrical shock
hazard. In particular, be careful not to place heavy objects on a
power cord covered by a carpet.

• Use only the included power cord for this unit. Using other
types may be a fire and electrical shock hazard.

• The power to this device is not completely shut off even when
the power switch is turned off. Locate the device close to the A C
outlet so you can easily reach the power plug.

Operation

• Do not scratch, bend, twist, pull, or heat the power cord. A
damaged power cord is a fire and electrical shock hazard.

• Do not remove the unit’s cover. You could receive an electrical
shock. If you think internal inspection, maintenance, or repair
is necessary, contact your dealer.

• Do not modify the unit. Doing so is a fire and electrical shock
hazard.

• If lightning begins to occur, turn off the power switch of the
unit as soon as possible, and unplug the power cable plug from
the electrical outlet.

• If there is a possibility of lightning, do not touch the power
cable plug if it is still connected. Doing so may be an electrical
shock hazard.

In case an abnormality occurs during operation

• If the power cord is damaged (i.e., cut or a bare wire is
exposed), ask your dealer for a replacement. Using the unit
with a damaged power cord is a fire and electrical shock hazard.

• Should this unit b e dro pped or the cab inet be damag ed, turn the
power switch off, remove the power plug from the AC outlet,
and contact your dealer. If you continue using the unit without
heeding this instruction, fire or electrical shock may result.

• If you notice any abnormality, such as smoke, odor, or noise, or
if a foreign object or liquid gets inside the unit, turn it off
immediately. Remove the power cord from the AC outlet. Con­sult your dealer for repair. Using the unit in this condition is a
fire and electrical shock hazard.

CAUTION

Installation

• Hold the power cord plug when disconnecting it from an AC
outlet. Never pull the cord. A damaged power cord is a poten­tial fire and electrical shock hazard.

• Do not touch the power plug with wet hands. Doing so is a
potential electrical shock hazard.

• This unit has ventilation holes at the rear to pr event the internal
temperature rising too high. Do not block them. Blocked venti­lation holes are a fire hazard.

• W hen rack-mounting the unit, allow enough free space ar ound
the unit for normal ventilation. This should be10 cm at the
sides, 15 cm behind, and 25 cm above.
For normal ventilation during use, remove the rear of the rack
or open a ventilation hole.
If the airflow is not adequate, the unit will heat up inside and
may cause a fire.

Operation

• Use only speaker cables when connecting speakers to amplifier
outputs. Using other types of cables is a fire hazard.

Maintenance

• Clean the contacts of the phone plug before connecting it to the
SPEAKERS jack of this unit. Dirty contacts may generate heat.

PRECAUTIONS FOR OPERATION – FOR CORRECT OPERATION –

Connector pin assignments

• XLR-type connectors are wired as follows: pin 1: ground, pin 2:
hot (+), and pin 3: cold (-).

Replacing abrasive parts

• The performance of components with moving contacts, such
switches, rotary controls, faders, and connectors, deteriorates
over time. The rate of deterioration depends on the operating
environment and is unavoidable. Consult your dealer about
replacing defective components.

Influence on cell phone usage

• U sing a c ell pho ne (mobile t elephone) near this unit may induce
noise. If noise occurs, use the telephone away from the unit.

Volume level setting

• Do not set all equalizer controls and faders to maximum.
Doing so may cause oscillation depending on the condition of
the connected unit and speakers, and may damage the speakers.

EMX88S/EMX68S—Owner’s Manual

4

Precautions

EMX88S/EMX68S—Owner’s Manual

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Introduction

Thank you for purchasing the Yamaha EMX88S/EMX68S Powered Mixer. The
EMX88S/EMX68S has the following features.
In order to take full advantage of the EMX88S/EMX68S and enjoy long and trouble-fr ee
performance, please read this owner’s manual carefully, and keep it in a safe place for
future reference.

Features

5

• The EMX88S/EMX68S features eight input channels
(EMX88S), six input channels (EMX68S) that support
a wide range of audio sources, from microphones to
line-level devices. The microphone input for each
channel has +15 V phantom power for use with con­denser-type microphones.

• Two powerful main amps are built-in to deliver 400W
+ 400W (800W monaural when bridged).
According to your needs, the output signal to the
power amps can be either stereo [MAIN L-R], [MAIN
(L+R)] + monitor [MAIN (L+R) - MON], or [MAIN
(L+R)] (bridge connection).

Stereo
The stereo-mixed main signal will be output from
speaker output jacks A and B of the EMX88S/
EMX68S. Either one or two speakers can be con­nected to each set of speaker jacks.

[MAIN (L+R)] + monitor
The monaural-mixed main signal will be output
from speaker jacks A of the EMX88S/EMX68S, and
the monitor signal will be output from speaker
jacks B. Either one or two speakers can be con­nected to each set of speaker jacks.

[MAIN (L+R)] (bridge connection)
The two power amps will be bridged, and the mon­aural-mixed main signal will be output from the
BRIDGE jack. This allows high-volume output
when using only one speaker.

• Indi vidual seven-band graphic equalizers are provided
to the main and the monitor sections. In this way, you
can individually adjust the volume level and frequency
response of the main speakers and monitor speakers.

• Two limiter circuits are built-in to prevent excessive
input levels to the amp.

• The 16 built-in effect types are equivalent in quality to
those of the acclaimed Yamaha SPX series of multi­effect units, and allow a variety of effects to be applied
to add reverb or ambience to vocals or instruments.
The16 types include TAP DELAY , which lets you easily
adjust the delay time.

• The EMX88S/EMX68S has implemented “EEEngine”,
Yamaha’s epochal amp drive technology to create an
unrivaled high-efficiency drive.
The EEEngine’s energy-saver/low-heat-generation
design has reduced power consumption to 50% or

less, and reduced heat generation to 35% or less (in
field applications, compared to Yamaha’s previous
models), and has lead to a reduction in energy cost
and to less-restrictive installation requirements relat ed
to heat generation.

Contents

Introduction........................................................... 5

Features ...............................................................5

EMX88S/EMX68S Quick Guide .................................6

Front and rear panel .................................................10

Control panel ......................................................10

Input/output panel............................................... 14

Rear panel.......................................................... 16

Installation ..........................................................16

Connections .............................................................17

Basic Operation ........................................................20

Connecting microphones and instruments .........20

Sending an independent mix to the monitor speak-

ers ................................................................... 20

Using the digital effect ........................................20

Example setups ........................................................22

As a conference PA system/installed sound

system ............................................................ 22

As a band PA...................................................... 23

Installing an optional rack mount kit .........................25

Troubleshooting .......................................................26

Specifications ........................................................... 27

General specifications ........................................27

Input specifications .............................................28

Output specifications ..........................................28

Dimensions ......................................................... 29

Block and Level diagram ....................................30

EMX88S/EMX68S—Owner’s Manual

EMX88S/EMX68S Quick Guide

6

EMX88S/EMX68S
Quick Guide

The following steps (1–5) explain the basic con­nection and operation of the EMX88S/EMX68S.

Also, please read “Front and Rear Panel” and
“Basic Operation” following this Quick Guide
section to learn more about using the EMX88S/
EMX68S.

STEP 1

Connecting speakers

Connection

Using speaker cables, connect each speaker to the
SPEAKERS A 1 jack and to the B 1 jack in the
SPEAKERS jack section on the rear panel of the
EMX88S/EMX68S.

Never connect the speak ers in the manner sho wn
below. Otherwise, the EMX88S/EMX68S’s built­in power amplifier will be damaged.

EMX88S (EMX68S)

EMX88S (EMX68S)

• The diagram above shows an example of connecting
two main speakers. Refer to pages 17–18 for other
connection examples.

• You may connect to either of the two jacks on the
speakers.

• Be sure to use a cable designed for speaker connec­tion.

EMX88S (EMX68S)

Setting the power amplifier mode

Set the power amp select switch (located on the
right corner on the panel) to MAIN L-R.

EMX88S (EMX68S)

Power amp select switch

• This Quick Guide assumes that two main speakers
are connected. Refer to pages 13, 17, 18 for other
connections and power amp select switch settings.

• When the power amp select switch is set to the
MAIN L-R position, the stereo L signal will be out­put from the SPEAKERS A jacks, and the stereo R
signal will be output from the SPEAKERS B jacks.

EMX88S/EMX68S—Owner’s Manual

Connecting a microphone

Make sure that the power is turned off to the
EMX88S/EMX68S.

Connect a microphone to the Low-Z jack or MIC
jack.

EMX88S (EMX68S)

Microphone

EMX88S/EMX68S Quick Guide

Connecting a CD player, MD play er, and/or cassette
deck

Connect a CD player or MD play er to the 2TR IN
jacks. Refer to the operation manual of the corre­sponding device for more information on the
input and output of the device.

EMX88S (EMX68S)

7

Using a condenser microphone

Turn on the PHANTOM switch (located in the upper
right corner on the panel).

EMX88S (EMX68S)

PHANTOM switch

• Do not connect or disconnect a condenser micro­phone while the power to the unit is on and the
PHANTOM switch has been turned on.

CD player

• To connect a second player , use the LINE jack or Hi­Z jack.

• You cannot use the Hi-Z jack and the Low-Z jack for
the same channel at the same time. If a microphone
has already been connected to the Low-Z jack of a
channel, you cannot connect a player to the Hi-Z
jack of the channel.

• Connect a recorder to the REC OUT jacks.

Recorder

(Cassette, DAT, MD)

EMX88S/EMX68S—Owner’s Manual

EMX88S/EMX68S Quick Guide

8

Connecting an electric acoustic guitar or electric
bass

Connect an electric acoustic guitar or electric
bass to the Super Hi-Z jacks.

EMX88S (EMX68S)

Electric-acoustic

guitar

• If you wish to use a guitar signal processor or bass
effect unit, connect them to the Hi-Z jack or LINE
jack. You cannot use the Hi-Z jack and the Low-Z
jack for the same channel at the same time. If a
microphone has already been connected to the Low­Z jack of a channel, you cannot connect the effect
unit to the Hi-Z jack of the channel.

Electric

bass

Connecting an electronic musical instrument

To the EMX88S/EMX68S’s LINE jacks, you can
connect an electronic musical instrument such as
a synthesizer, drum machine, signal processor
connected to an electric guitar, etc. Refer to the
diagram below to make a stereo co nnection fr om
the output jacks (such as L/MONO and R) of an
electronic musical instrument to the LINE jacks
in stereo.

If you wish to connect multiple instruments,
make a monaural connection as shown below.

EMX88S (EMX68S)

• You can also use the Hi-Z jacks and Super Hi-Z
jacks to connect multiple instruments. You cannot
use the Hi-Z jack and the Low-Z jack for the same
channel at the same time. If a microphone has
already been connected to the Low-Z jack of a chan­nel, you cannot connect an instrument to the Hi-Z
jack of the channel.

STEP 2

Power on

1 Turn on the power to all external devices con-

nected to the EMX88S/EMX68S.

2 Make sure that the MASTER controls in the

MONITOR section and the MAIN section are set
to “0,” then press the POWER switch on the
EMX88S/EMX68S to turn on the power.

EMX88S (EMX68S)

EMX88S (EMX68S)

Synthesizer,
Drum machine,
Guitar processor

EMX88S/EMX68S—Owner’s Manual

• Be sure to follow the power up sequence specified
above to prevent the speakers from being damaged.

• To correct the low range, turn on the YAMAHA
SPEAKER PROCESSING switch in the upper right
corner of the panel.

STEP 4

STEP 5

STEP 3

Sound output

Set the MASTER control in the MAIN section to

√√

“

√√

,” then while playing an instrument con­nected to a channel to be checked (or while
speaking to a connected microphone), adjust the
LEVEL control of the corresponding channel so
that the 0 LED of the peak level indicator in the
MAIN section will light up momentarily.

• Do not press the PAD switch if sound is input from

the microphone. Otherwise, press the PAD switch
on.

• If you are using one of the speakers as a monitor

speaker , use the MASTER c ontrol of the MONITOR
section to adjust its volume.

EMX88S (EMX68S)

EMX88S/EMX68S Quick Guide

Applying built-in effects

1 Turn on the ON switch in the DIGITAL EFFECT

section. The ON switch indicator lights up.

2 Using the Program selector, select one of 16 effect

types.

3 Adjust the amount of effect applied by using the

EFFECT control of the target channel and the
EFFECT RTN control in the MAIN section.

EMX88S (EMX68S)

9

• Note that if the LIMITER indicator stays lit for a

long time, the built-in amplifier and speakers may
be damaged.

Power off

1 Press the PO WER switch of the EMX88S/EMX68S

to turn off the power to the unit.

2 Turn off the power to all connected devices.

• Be sure to follow the power off sequence specified
above to prevent the speakers from being dam­aged.

• Set the MASTER controls in the MAIN section
and the MONITOR section to “0” for use next
time (so that a loud noise will not sound the next
time you turn on the power to the unit).

EMX88S/EMX68S—Owner’s Manual