Yamaha Mx-55 User manual

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2

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gation

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Wipe

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IONS

+

Connect

panel

of

th

fe

place

for

future

ref

und-on

the

rear

|

number

can

be

fo

is

Owner's

Manual

in

a

sa

eep

th

Back

cover

Bede

recat

en

ete

eee eee

eee

a

sence

eRe

EOE

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Rae

eee

ee

nem

ee

eee

10

Se

2

i

Troubleshooting

pecifications

RISK

OF

ELECTRIC

SHOCK

DO

NOT

BEEN

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.

è

Explanation

of

Graphical

Symbols

The

lightning

flash

with

arrowhead

>

;

symbol,

within

an

equilatera!

triangle,

j

is

intended

to

alert

you

to

the

presence

f

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

|

|

you

to

the

presence

of

important

-

operating

and

maintenance

(servicing)

@

instructions

in

the

literature

accom-

panying

the

appliance,

WARNING

-To

reduce

the

risk

of

fire

or

electric

shock,

do

not

expose

this

appliance

to

rain

or

moisture.

SAFETY

INSTRUCTIONS

{1

Read

Instructions

-

All

the

safety

and

operating

instructions

should

be

read

before

the

appliance

is

operated.

2

Retain

Instructions

—

The

safety

and

operating

instructions

should

be

retained

for

future

reference.

3

Heed

Warnings

—

All

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to.

4

Follow

Instructions

—

All

operating

and

other

instructions

should

be

followed.

5

Water

and

Moisture

-

The

appliance

should

not

be

used

near

water

—

for

example,

near

a

bathtub,

washbowl,

kitchen

sink,

laundry

tub,

in

a

wet

basement,

or

near

a

swimming

pool,

etc.

6

Carts

and

Stands

-

The

appliance

should

be

used

only

with

a

cart

or

stand

that

is

recommended

by

the

manufacturer.

6A

An

appliance

and

cart

combination

should

be

moved

with

care.

Quick

stops,

excessive

force,

and

uneven

surfaces

may

cause

the

appliance

and

cart

combination

to

overturn.

|

7

Wall

or

Ceiling

Mounting

—

The

appliance

should

be

mounted

to

a

wall

or

ceiling

only

as

recommended

by

the

manufacturer.

8

Ventilation

—

The

appliance

should

be

situated

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation.

For

example,

the

appliance

should

not

be

situated

on

a

bed,

sofa,

rug,

or

similar

surface,

that

may

block

the

ventilation

openings;

or

cabinet

that

may

impede

the

flow

of

air

through

the

ventilation

openings.

Q

Heat-

The

appliance

should

be

situated

away

from

heat

sources

such

as

radiators,

stoves,

or

other

appliances

that

produce

heat.

10

Power

Sources

-

The

appliance

should

be

connected

to

a

power

supply

only

of

the

type

described

in

the

operating

instructions

or

as

marked

on

the

appliance:

11

Power-Cord

Protection

-

Power-supply

cords

Should...

be

routed

so

that

they

are

not

likely

to

be

«

walked

‘on

‘or

pinched

by

items

placed

upon

or

“

against

them,

paying

particular

attention

to

cords

4

at

plugs,

Convenience

receptacles,

and

the

point

where

they

exit

from.

the

appliance.

-

12

Cleaning

—

The

appliance

should

be

cleaned

only

as

recommended

by

the

manufacturer.

13

Nonuse

Periods

—

The

power

cord

of

the.

appliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time.

14

Object

and

Liquid

Entry

-

Care

should

be

taken

so

that

objects

do

not

fall

into

and

liquids

are

not

spilled

into

the

inside

of

the

appliance.

15

Damage

Requiring

Service

-

The

appliance

should

be

serviced

by

qualified

service

personnel

when:

|

A.

The

power-supply

cord

or

the

plug

has

been

damaged;

or

:

B.

Objects

nave

fallen,

or

liquid

has

been

spilled

into

the

appliance;

or

C.

The

appliance

has

been

exposed

to

rain;

or

D.

The

appliance

does

not

appear

to

operate

normally

or

exhibits

a

marked

change

in

performance;

or

E.

The

appliance

has

been

dropped,

or

the

cabinet

damaged.

16

Servicing

—

The

user

should

not

attempt

to

`

service

the

appliance

beyond

those

means

described

in

the

operating

instructions.

All

other

servicing

should

be

referred

to

qualified

service

personnel.

17

Power

Lines

—

An

outdoor

antenna

should

be

located

away

from

power

lines.

18

Grounding

or

Polarization

—

The

precautions

that

should

be

taken

so

that

the

grounding

or

polarization

of

an

appliance

is

not

defeated.

CAUTION:

READ

THIS

BEFORE

OPERATING

YOUR

MX-55

1

To

ensure

the

finest

performance,

please

read

this

manual

carefully.

Keep

it

in

a

safe

place

for

future

reference.

2

Install

your

unit

in

a

cool,

dry,

clean

place

—

away

from

windows,

heat

sources,

and

too

much

vibration,

dust,

moisture

or

cold.

Avoid

sources

of

hum

(transformers,

motors).

To

prevent

fire

or

electrical

shock,

do

not

expose

to

rain

and

water.

3

Do

not

operate

the

amplifier

upside-down.

It

may

overheat,

possibly

causing

damage.

4

Never

open

the

cabinet.

If

a

foreign

object

drops

into

the

set,

contact

your

dealer.

D

Do

not

place

records

or

other

objects

on

top

of

the

amplifier,

this

will

block

the

ventilation

holes,

cause

the

internal

temperature

to

rise

and

may

result

in

a

failure.

6

Do

not

use

force

on

switches,

knobs

or

cords.

When

moving

the

set,

first

turn

the

unit

off.

Then

gently

disconnect

the

power

plug

and

the

cords

connecting

to

other

equipment.

Never

pull

the

cord

itself.

7

Do

not

attempt

to

clean

the

unit

with

chemical

solvents;

this

might

damage

the

finish.

Use

a

clean,

dry

cloth.

8

Be

sure

to

read

the

“Troubleshooting”

section

on

common

operating

errors

before

concluding

that

your

unit

is

faulty.

9

Do

not

connect

audio

equipment

to

the

AC

outlets

on

the

rear

panel

if

that

equipment

requires

more

power

than

the

outlets

are

rated

to

provide.

FRONT

PANEL

YAMAHA

NATURAL

SOUND

2/4

CHANNEL

POWER

AMPLIFIER

MxX-SS

REAR

PANEL

INPUT

SCH/4CH

SELECTOR

©

(MI

©

SO

CAUTION

=

RISK

OF

ELECTRIC

SHOCK!

00

MOT

OPEN

TE

tE

SG

J

Cag

OR

ERECTRO

=g

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ANCE

7I

SAN

DA

MOSUL

|

ATTENTION

=53-272

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ic©

Oo

SYA

GUE

INE

PAS

GuvR'R

GNO

CAUT-

ON

22NNe2T0\

METHTO

CEFERS

FOR

S-CHANNE

ANG

B-CHANNEL

OPERATION

i

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-_

88

+

i

MISE

EN

GARDE

ca

MeTHIng

DE

CONNEX

ON

EST

DFFERERITE

LGRS

DELUTUSATON,

SE

E-TANS

LX

OL OE

é-CaNaux

i

:

|

©

©

SPEAKERS

A

A

E

p

+

©

-

s

eel

j

GQMIN/JSPEAKER

E9

MIN/HALT-PARLEUA

©

AC

OUTLET

~

UNSWITCHED

120V

BOHz

DOY

MAX.

YAMAHA

"52"

120

VOLTS

400

WATTS

500VA

BUHZ

YAMAHA

CORPORATION

MADE

IN

JAPAN

se

|]

w

AT

SPEAKERS

LEVEL

LEFT

ech

REAR

SCH

D

©

@

POWER

switch/indicator

(POWER)

Press

this

switch

to

switch

ON

the

power.

The

indicator

above

it

will

illuminate

while

the

power

is

ON.

Press

the

switch

again

to

switch

OFF

the

power.

Note

the

following

cautions.

_

®

Before

switching

ON

the

power,

be

sure

to

set

the

volume

control(s)

of

other

components

(such

as

the

control

amplifier,

surround-sound

processor,

etc.)

to

the

lowest

setting

in

order

to

avoid

damage

to

the

speakers.

è

[he

speaker-protection

circuit

functions

to

mute

speaker

sound

reproduction

for

a

few

seconds

after

the

power

is

switched

ON.

@

SPEAKERS

switch

(SPEAKERS

ON/OFF)

Sound

is

reproduced

through

the

speaker

systems

connected

to

this

unit

when

this

switch

is

pressed

inward.

No

sound

is

reproduced

when

the

switch

is

pressed

again

to

release

it

outward.

@

SPEAKERS

LEVEL

controls

(SPEAKER

LEVEL)

These

controls

are

used

for

adjustment

of

the

volume

level

of

the

sound

reproduced

through

the

speaker

systems

connected

to

this

unit.

Turning

a

control

clockwise

increases

the

volume

level

from

the

speaker

system(s)

corresponding

to

that

control.

Note

that

the

function

of

these

controls

differs

depending

upon

whether

the

unit

is

being

used

for

2-channel

operation

or

4-channel

operation,

as

follows.

(1)

Two-channel

operation:

The

control

at

the

right

is

used

to

adjust

the

volume

of

sound

from

the

right

speaker

system,

and

the

control

at

the

left

is

for

the

left

speaker

system.

:

(2)

Four-channeil

operation:

The

control

at

the

right

is

used

to

adjust

the

volume

of

sound

from

the

front

speaker

systems,

and

the

control

at

the

left

is

for

the

rear

speaker

systems.

@

Note

that,

for

four-channel

operation,

these

controls

cannot

be

used

for

adjustment

of

the

left/right

balance

of

the

sound.

If

such

an

adjustment

is

necessary,

it

should

be

made

by

using

the

|

control

on

the

control

amplifier.

®

Normally,

during

4-CHANNEL

operation,

these

controls

should

be

set

to

the

fully

clockwise

(MAX)

position,

and

then

the

left

control

should

be

turned

counterclockwise

if

it

is

necessary

to

make

an

adjustment

of

the

front/rear

balance

of

the

sound.

@

To

make

an

overall

adjustment

of

the

level

of

the

sound,

do

so

by

using

the

control

on

the

control

amplifier.

©

INPUT

terminals

These

terminals

are

for

connections

from

a

control

amplifier,

surround-sound

processor,

etc.

Note

that

the

connections

differ

depending

upon

whether

this

unit

is

to

be

used

for

two-channel

operation

or

four-channel

operation.

-

e

Refer

to

the

section

“CONNECTIONS”

for

detailed

information.

@

Ground

(GND)

terminal

knob

Make

a

connection

between

this

terminal

and

the

same

terminal

of

the

control

amplifier

if

making

the

connection

results

in

less

hum

or

other

noise.

|

@

2-/4-CHANNEL

selector

(2CH/4CH

SELECTOR)

Set

this

selector

to

the

“2CH”

position

if

the

unit

is

to

be

used

for

two-channel

operation,

or

to

the

“4CH”

postion

for

four-channel

operation.

@)

SPEAKERS

terminals

These

terminals

are

for

connections

to

the

speaker

systems.

Just

as

for

the

INPUT

terminals,

note

that

the

connections

differ

depending

upon

whether

this unit

is

to

be

used

for

two-channel

operation

or

four-channel

operation.

|

e

Refer

to

the

section

“CONNECTIONS”

for

detailed

information.

©

UNSWITCHED

AC

outlet

This

unswitched

AC

outlet

can

be

used

for

connection

of

the

power

-cord

from

another

audio

component.

Note

that

the

power

to

that

component

is

not

affected

by

the

ON

or

OFF

setting

of

the

POWER’

switch

of

this

unit.

Note:

The

component

connected

here

should

have

a

rating

of

no

more

than

200W.

@

Before

attempting

to

make

any

connections

to

or

from

this

unit,

@

Note

that

the

arrangement

of

connections

differs

depending

upon

be

sure

to

first

switch

OFF

the

power

to

this

unit

and

to

any

|

whether

this

unit

is

to

be

used

for

two-channel

operation

or

four-

other

components

to

which

connections

are

being

made.

channel

operation.

CONNECTIONS

FOR

4-CHANNEL

OPERATION

6l

MINJ/SPEAKER

Ja

JHAUT-PARLEUR

Left-front

Control

amplifier

(Separate

purchase)

:

Right-front

speaker

O

speaker

systern

Surround-sound

processor

|INPUF

system

(separate

|

(separate

purchase)

c

(separate

purchase)

()

—

'

purchase)

Left-front.

Left-rear

L

ns

|

channel

channel

5

io

ĝ,

©

|

Pee]

naaran

Ze

|

|

a

YAMANA

ypo

re

D

QPO

QO

RRS

“Bt

92

:

Soe

Right-front

Right-rear

channel

channel

Nee

en

a

7

=

mi

|

Left-front

!

Left-rear

MT

|

speaker

ke

speaker

system

i

system

|

|

Left-rear

Right-rear

ae

eri

aos

Pon

system

ig

ront

i

ight-rear

system

(separate

speaker

-0

000

©

Q0.

©

©

©)-—

speaker

(separate

purchase)

system

system

purchase)

.

Set

the

2-/4-CHANNEL

selector

to

the

“4CH”

position.

.

Make

connections

from

the

“PRE

OUT”

terminals

of

a

contro!

amplifier

to

the

“INPUT”

terminals

of

a

surround-sound

processor,

and

then

from

the

“FRONT

OUTPUT”

terminals

of

the

surround-

sound

processor

to

the

left

pair

of

“INPUT”

terminals

of

this

unit,

and

from

the

“REAR

OUTPUT”

terminals

of

the

surround-sound

processor

to

the

right

pair

of

“INPUT”

terminals

of

this

unit,

as

illustrated

on

the

previous

page.

.

Then

make

the

connections

from

this unit

to

the

speaker

systems.

èe

Make

connections

from

the

upper

left

pair

of

speaker

terminals

on

this

unit

to

the

left

front

speaker

system.

e

Make

connections

from

the

lower

left

pair

of

speaker

terminals

on

this

unit-to

the

right

front

speaker

system.

ə

Make

connections

from

the

upper

right

pair

of

speaker

terminals

on

this

unit

to

the

left

rear

soeaker

system.

@

Make

connections

from

the

lower

right

pair

of

speaker

terminals

on

this unit

to

the

right

rear

speaker

system.

Be

sure

all

connections

are

to

the

correct

respective

positive

("+")

and

negative

("—”)

terminals

of

the

speaker

systems.

Concerning

the

connections

of

other

components,

refer

to

the

Owner's

Manual

for

each

component.

MAC

outlet

A

maximum

of

200W

can

be

supplied

to

another

component

connected

here.

Note

that

this

outlet

is

“unswitched”

(i.e.,

is

not

affected

by

the

POWER

switch

of

this

unit).

m

CONNECTIONS

FOR

2-CHANNEL

OPERATION

Control

amplifier

(separate

purchase)

Right

speaker

system

(separate

purchase)

Left

speaker

system

(separate

purchase)

PRE

OUT

|

f

Right

speaker

Left

speaker

|

system

system

a

~N

Wall

AC

outlet

Right

channe!

Left

channel

|

mn

|

OE

=

eet

pees

D!

=

fl

{©

MY

|

©;

cen

aan

nea

a

=

et

fiin

O

=

as

en

E

|

OO.

|

=

eps

-~

Sie

BQMIN/SPEAKER

62MIN

/HALIT-PARLEUA

1.

Set

the

2-/4-CHANNEL

selector

to

the

“2CH”

position.

2.

Make

connections

from

the

“PRE

OUT”

terminals

of

a

control

amplifier

to

the

upper

pair

of

“INPUT”

terminals

of

this

unit,

as

illustrated

on

the

previous

page.

3.

Then

make

the

connections

from

this

unit

to

the

speaker

systems.

*

Be

sure

all

connections

are

to

the

correct

respective

positive

("+")

and

negative

(“—")

terminals

of

the

speaker

systems.

*

Concerning

the

connections

of

other

components,

refer

to

the

Owner’s

Manual

for

each

component.

MAC

outlet

|

A

maximum

of

200W

can

be

supplied

to

another

component

connected

here.

Note

that

this

outlet

is

“unswitched”

(i.e.,

is

not

affected

by

the

POWER

switch

of

this

unit).

=

SPEAKER

CONNECTIONS

1.

Strip

off

about

10

mm

(3/8

in.)

of

the

insulation

(leaving

only

the

core

wire)

from

the

end

of

each

speaker

connection

wire

to

be

connected

to

this

unit.

2.

Unscrew

the

knob

(for

the

SPEAKER

connection

terminal

to

which

the

speaker

connection

wire

is

to

be

connected)

until

the

wire

can

be

inserted

into

the

hole

at

the

top

of

the

rear

part

of

the

knob.

Each

speaker

connection

wire

should

be

inserted

securely,

taking

care

that

it

does

not

contact

any

other

terminal.

Then

turn

the

knob

to

tighten

the

knob

securely.

Red:

positive

{+)

Black:

negative

(-)

The

speaker

connection

wires

should

be

no

tonger

than

necessary.

*

Be

sure

that

the

connection

wires

are

each

connected

to

the

speaker

system

that

corresponds

to

that

terminal.

Note

that

there

are

two

terminals

(one

positive

and

one

negative)

for

each

speaker

system

cabinet.

The

red

terminal

must

be

connected

to

the

positive

(+)

terminal

on

the

speaker

system,

and

the

black

terminal

to

the

negative

(-)

terminal

on

the

speaker

system.

If

connections

are

not

correct,

the

sound

reproduced

from

the

speaker

systems

will

seem

unnatural,

with

insufficient

stereo

effect,

sound

will

seem

localized

between

the

speaker

systems,

and

low-range

sound

will

be

unsatisfactory.

|

Be

sure

that

the

impedance

of

the

speaker

systems

is

within

the

specified

range

for

this

unit.