Yamaha M-2 Manual de usuario

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DDOZ

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8 ₪

Hi.

Thank

you

very

much

for

purchasing

the

YAMAHA

Stereo

Power

Amplifier

M-2

Developed

CONTENTS

applying

the

best

YAMAHA’s

superior

electronic

technology,

the

M-2

stereo

power

amplifier

that

achieves

extremely

high

level

performance.

The

output

stage,

which

uses

pure

complementary

OCL

and

triple

push-pull

circuitry,

Caution:

Read.

This

Before

Operating

produces

the

rated

output

240W

without

any

strain

the

large-capacity

power

Your

M2...

supply

section,

ÍConnection

Diagram.

Before

first

operating

your

M-2,

please

read

this

Owner's

Manual

carefully,

order

0011...

[Front

Panel

and

realize

the

potential

the

unit

and

keep

best

condition

for

many

years

trouble-

^ ^

[Connection

and

Operation

.|...........

free

use.

Specifications

|...

.................

Block

Diagram

Schematic

Diagram

.................

Troubleshooting

|..........

eren

€

The

voltage

amplifying

stage

employs

cascade-

€

Two

extremely

large

22,000

capacitors,

two

connected

differential

two-stage

circuit

separate

constant-voltage

power

supplies

for

the

throughout.

The

use

Dual

FET

input

and

cascode

bootstrap

circuit

the

first

stage

and

cas-

cade-connection,

current

mirror

and

push-pull

output

the

pre-drive

stage

ensures

high

degree

stability,

low

distortion

and

im-

proved

high-frequency

characteristics.

the

driver

and

the

power

amplifier

three-

stage

emitter

follower

pure

complementary

OCL

SEPP

circuitry

using

high-ft

transistors.

This

accounts

for

wide

bandwidth,

high

output

and low

distortion.

voltage

amplifying

stage,

and

the

use

pure

copper

plate

earth

line

for

ultra-low

impedance

guarantee

greatly

reduced

intermodulation

dis-

tortion,

improved

separation

and

absolutely

stable

operation.

Other

Features

Except

for

the

chemical

capacitors

the

power

supply

section,

mylar

and

styrol

capacitors

are

employed

throughout.

Layout

parts,

wiring,

earth

line

well

many

other

aspects

have

been

given

due

con-

sideration.

The

basic

design

ensures

high

reliability,

while

the

ultimate

aim

has

been

the

improvement

the

overall

audio

characteristics.

IMPORTANT!

Please

record

the

serial

number

your

unit

the

space

below

Model

Name

M-2

Serial

No.

The

serial

number

located

the

rear

the

chassis.

Retain

this

Owner's

Manual

safe

place

for

future

reference.

PLACE

INSTALLATION

not

use

the

set

€

locations

exposed

direct

sunshine,

such

near

windows

locations

high

temperatures,

such

near

heaters

€

locations

extremely

low

temperatures

humid

dusty

locations

Since

the

M-2

quite

heavy

[20.9

kgl

should

placed

firm

base.

WATER

DAMAGE

with

water,

immediately

disconnect

the

power

plug

and

contact

your

YAMAHA

service

store.

careful

not

place

any

container

that

holds

liguid

near

the

ampli-

fier.

PROPER

VENTILATION

Never

cover

the

ventilation

holes

top

the

amplifier

with

any

object.

proper

ventilation

not

ensured,

the

internal

tem-

perature

the

set

will

rise

unduly,

which

will

cause

improper

operation

and

lead

damage.

CAREFUL

HANDLING

Avoid

using

strong

force

when

operating

any

the

switches

and

controls.

UNAUTHORIZED

OPENING

Never

open

the

case

the

amplifier

touch

any

the

parts

inside,

there

serious

danger

electric

shock.

If,

accident,

some

foreign

matter

has

been

dropped

inside

the

set,

immediately

disconnect

the

power

plug

and

contact

your

YAMAHA

service

store.

ADDITIONAL

POWER

OUTLET

The

additional

power

outlet

the

rear

panel

the

set

UNSWITCHED

(not

linked

with

the

power

switch)

and

has

maximum

capacity

100W.

Before

con-

necting

another

piece

equipment

this

outlet,

check

its

power

consumption

ensure

does

not

exceed

this

limit.

MOVING

THE

SET

Before

moving

the

amplifier,

sure

dis-

connect

the

power

plug

well

all

other

connection

cords.

POWER

CORD

When

disconnecting

the

power

cord,

always

hold

the

plug

itself

and

not

pull

the

cord.

When

the

set

not

used

for

long

period

time,

recommended

dis-

connect

the

power

cord.

PLAYING

RECORDS

sure

turn

down

the

volume

the

contro!

amplifier

before

lifting

lowering

the

tone

arm

when

playing

records.

Other-

wise

the

transient

noise

may

cause

damage

the

speakers.

MAKING

CONNECTIONS

Always

switch

off

the

power

before

connect-

ing

disconnecting

the

input

cables.

CLEANING

Avoid

wiping

the

case

with

liquids

such

benzine

thinner,

and

not

use

insecti-

cide

sprays

the

near

the

set.

Always

use

soft,

dry

cloth

wipe

the

set.

—

BEFORE

REQUESTING

SERVICE

Before

calling

service

technician,

please

check

the

TROUBLESHOOTING

chart

the

last

section

this

manual

sure

there

misoperation.

OWNER’S

MANUAL

Please

keep

this

Owner’s

Manual

for

future

reference.

RIGHT

Speakers

CONNECTION

DIAGRAM

Ground

cord

Control

Amplifier

YAMAHA

אתה

ג󰾯

PREVENT

FIRE

SHOCK

৮5289)

AOT

EXPOSE

THIS

QUTLETS

120

5آانالا󰾯

SOWATTS

ALLAR

RAIN

MOISTURE

60145

CAUTION:

NOT

REMOVE

THESE

SCREWS.

SCC

DDT”OV

CAUTION

HAN

ATSU.

JAPAN

ATTENTION:

NE.

PAS

ENLLVER

LES

VIS

LIFE

LES

INSTRUCTIONS.

AU-

DESSOUS

LAPPASEIL

—

TARE

גו󰾯

Pit

AEC

UT,

TOME

vci

MAR

Jiu)

AAR

TOTAL

2১:

voltage

contained

the

output

control

amplifier

connected

the

INPUT

terminals,

the

protect

circuit

operates,

ACRE

/SPEA«ER

৬৯6

১০

SPEAKER

WARNING-TO

PREVENT

FIRE

SHOCK

HAZARI

NOT

EXPOSE

THIS

APPLIANCE

RAIN

MOI.

CAUTION-DO

NOT

REMOVE

THESE

SCREWS.

SEE

Canadian

Model

DEE

LEFT

Speakers

FRONT

PANEL

AND

CONTROLS

NATURAL

SIEREQ

POWER

₪5

POWER“

switch)

When

this

button

depressed,

power

the

unit

will

switched

and

the

switch

will

light

up.

When

depressed

again,

power

turned

off.

₪

Due

the

action

the

muting

relay,

sound

will

heard

for

several

seconds

after

switching

the

power.

This

prevents

any

transient

switching

noises

from

reaching

the

speakers.

sure

turn

down

the

VOLUME

control

the

control

amplifier

minimum

before

turning

the

POWER

switch

guard

the

speakers

against

any

sudden

loud

program

sounds

produced

after

the

muting

relay

time.

enne

SPEAKER

PEAK

OUTPUT

LEVEL

SPEAKERSI(A

and

These

two

push-button

switches

govern

the

two

speaker

terminals

and

When

depressed,

the

speaker

set

connected

the

respective

terminal

will

connected

and

the

switch

will

light

up.

Depressing

the

switch

again

will

disconnect

the

speakers.

When

using

both

terminals

the

same

time,

refer

"Speaker

Connections"

(p.

regarding

speaker

impedance.

The

SPEAKER

switches

should

turned

off

when

changing

the

connection

the

speaker

cords,

and

they

can

used

other

cases,

such

changing

program

sources

etc.,

well.

D.󰾰

ווווווווווווווווון..

הפשה

400

৩”

101000010000000000,

PEAK

OUTPUT

LEVEL

(PEAK

and

OVERLOAD

INDICATOR)

These

peak

indicators

provide

visual

indication

the

left

and

right

output

levels.

They

cover

range

0.002W

400W

(89)

(—50dB

3dB).

Note:

Also

that

the

meters

are

calibrated

accu-

rately

for

output

power

into

standard

speakers,

but

that

corrections

must

applied

speakers

with

different

imped-

ance

are

used.

Clipping

(at

about

THD)

indicated

for

the

left

and

right

outputs

separately

the

OVER-

LOAD

indicators.

When

these

light

up,

turn

down

the

input

level

using

the

LEVEL

controls

the

rear

panel.

CONNECTION

AND

CONNECTIC

the

M-2

has

very

high

power

consumption,

not

connect

additional

outlet

some

other

piece

equipment,

but

plug

directly

into

wall

outlet.

Regardless

the

position

the

power

switch,

the

additional

power

outlet

the

rear

panel

the

M-2

provides

power

for

maximum

consumption

100W.

Speakers

with

any

impedance

from

1682

can

connected

either

the

terminals

the

rear

panel.

When

using

two

sets

speakers

the

and

terminals

simultaneously,

sure

use

only

speakers

having

impedance

connect

the

speaker

cords

the

speaker

terminals,

loosen

the

terminal

knob

turning

the

left

(anti-clockwise)

that

you

can

see

the

hole

into

which

the

cord

will

inserted.

SPEAKER

CORD

OPERATIONS

Insert

the

stripped

speaker

cord

into

the

hole,

turn

the

terminal

knob

the

right

(clockwise)

and

tighten

fast.

Two

sets

speaker

systems

can

connectable

M-2.

The

terminals

the

left

are

for

right

speakers

and

those

the

right

for

left

speakers.

CONNECTION

CONTROL

AMPLIFIER

Switch

off

the

power

the

control

amplifier

well

the

power

amplifier.

use

M-2

amplifier,

connect

the

output

cable

from

the

control

amplifier

INPUT

terminals

the

rear

panel.

use

M-2

amplifier,

also

use

Low-Cut

Filter

and

Sub-Sonic

Filter

prevent

ultra-

low

frequency

noise

(due

disc

warping

irre-

gular

turntable

rotation,

etc.)

from

entering

the

speakers.

general,

the

output

cable

from

the

Control

Am-

plifier

connected

this

terminal.

This

will

provide

added

protection

speaker

from

the

harmful

effects

that

subsonic

rumbles,

etc.,

can

connect

the

INPUT

terminals.

Note:

not

connectable

both

INPUT

and

INPUT

terminals

the

same

time.

So,

connect

either

terminal

time

depending

the

type

and

use

your

audio

equipment.

€

Level

controls

are

provided

the

rear

panel

adjust

the

M-2

for

use

with

any

control

amplifier.

The

right

hand

knob

for

the

left

channel

and

the

left

hand

one

for

the

right

channel.

the

sound

distorted

using

contro!

amplifier

with

high

output,

lower

the

input

sensitivity

turning

these

knobs

counter-

clockwise.

Control

Amplifier

০

ean

0০5

D󰾰

Lch

LEVEL

Control

Rch

LEVEL

Control

Speaker

Systems

When

listening

low

volumes

Volume

adjustment

the

control

amplifier

can

facilitated

turning

the

set's

LEVEL

control

counterclockwise

little.

But

turned

fully

counterclockwise,

sound

will

produced.

SPECIFICATIONS

Rated

Output

Power.

240W

(82,

20Hz~

30kHz

0.005%

T.H.D)

01727

90172

(80,

120W,

0.0196

T.H.D)

Input

Sensitivity/

Impedance

০

775

החדהה

שש󰾯

নে

Kênanga

Input

00018111110

—

שש

רה

המשר󰾯

শিট

100072

-—0.7:0.5dB

Reina

—

der

eee

——

কে

—

Harmonic

Distortion

ו󰾯

PARANI

اذل«󰾯

০০৯৭

Less

than

0.004%

O0kHz,

120W)

1B,

50Hz:7kHz=4:1,

BOW)

Channel

Separation

(LR,

HYR

2১১

AYAM

AAN

শিপ

টিপি

লীনা?

Peak

Indicator

ווה󰾯

indicator

Point

;

Malak

YY,

Indicator

Level

IHE

ELE

sam

DË

meer,

Rated

Power

Consumption

-—

————

Canadian

Medel

1800

וו󰾯

Outlet

—

mensions

—

Weight

DEENEN

TAU

Specifications

subject

change

without

notice.

BLOCK

DIAGRAM

PRE

DRIVE

AMP

CONTROL

INPUT

וו󰾯

Hol

yO)

POWER

AMP

METER

PEAK

Indicator

AMP

SPEAKERS

₪

MUTING

SPEAKER

PROTECTOR

POWER

TRANSFORMER

POWER

SPEAKERS

POWER

IND

+10V

—B

—10V

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fiser

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(eb

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RESISTOS

RESI

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Since

mist

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"METRLUED.

OEÍBAFÍON

RESISTOR

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