Pioneer GR-470 User manual

Table of contents

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Operating

GRAPHIC

EQUALIZER

F-47770

Q

PIONEER

Instructions

SO

em

150

pom

$00

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1X

orm

2

SKC

mem

XC

ng

SK

ee!

ee

GO

ee

SC

OC

1K

mK

SK

TAPE

MONTOR

——

QO

*:

rower

——

dill

|,

7.

10:

Thank

you

for

buying

this

Pioneer

product.

Please

read

through

these

operating

instructions

so

you

will

know

how

to

operate

your

model

properly.

After

you

have

fin-

ished

reading

the

instructions,

put

them

away

in

a

safe

place

for

future

reference.

In

some

countries

or

regions,

the

shape

of

the

power

plug

and

power

outlet

may

sometimes

differ

from

that

shown

in

the

explanatory

drawings.

However,

the

method

of

connecting

and

operating

the

unit

is

the

same.

WARNING:

To

prevent

FIRE

OR

SHOCK

HAZARD,

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE.

IMPORTANT

NOTICE

[For

U.S.

and

Canadian

models]

The

serial

number

for

this

equipment

is

located

on

the

rear

panel.

Please

write

this

serial

number

on

your

enclosed

war-

ranty

card

and

keep

it

in

a

secure

area.

This

is

for

your

security.

[For

Canadian

model]

CAUTION:

to

prevent

ELECTRIC

SHOCK

DO

NOT

USE

THIS

(POLARIZED)

PLUG

WITH

AN

EXTENSION

CORD,

RECEP-

TACLE

OR

OTHER

OUTLET

UNLESS

THE

BLADES CAN

BE

FULLY

INSERTED

TO

PREVENT

BLADE

EXPOSURE.

ATTENTION:

pour

prevenir

LES

CHOCS

ELECTRI-

QUES

NE

PAS

UTILISER

CETTE

FICHE

POLARISEE

AVEC

UN

PRO-

LONGATEUR

UNE

PRISE

DE

COURANT

OU

UNE

AUTRE

SORTIE

DE

COURANT,

SAUF

SI

LES

LAMES

PEUVENT

ETRE

INSEREES

A

FOND

SANS

EN

LAISSER

AUCUNE

PARTIE

A

DECOUVERT.

Rear

Panel

Facilities

System

Connections

|

System

Connections

II

Front

Panel

Facilities

LINE

VOLTAGE

SELECTOR

SWITCH

Only

multi

voltage

models

are

provided

with

this

switch,

U.

S.,

Canadian,

U.

K.,

Australian

and

European

models

are

not

provided

with

this

switch.

You

will

find

the

line

voltage

selector

switch

on

the

rear

pan-

el.

Before

your

model

is

shipped

from

the

factory,

the

switch

is

set

to

the

power

requirements

of

the

destination;

neverthe-

less,

you

should

check

that

it

is

set

properly

before

plugging

the

power

cord

into

the

AC

outlet.

If

the

voltage

is

not

properly

set,

or

if

you

move

to

an

area

where

the

voltage

requirements

differ,

adjust

the

selector

switch

as

follows.

Before

adjust-

ing,

disconnect

the

power

cord.

1.

Use

a

medium-size

screwdriver.

2.

Insert

the

screwdriver

into

the

groove

of

the

selector

switch

and

turn

it

so

that

the

power

voltage

marking

of

your

area

points

to

the

arrow.

VOLTAGE

SELECTOR

Vv

Medium-size

screwdriver

Individual

Operations

Troubleshooting

Block

Diagram

Specifications

SAFETY

INSTRUCTIONS

READ

INSTRUCTIONS

—

All

the

safety

and

operating

instructions

should

be

read

before

the

appliance

is

operated.

RETAIN

INSTRUCTIONS

—

The

operating

instruc-

tions

should

be

retained

for

future

reference.

HEED

WARNING

—

All

warnings

on

the

appliance

-and

in

the

operating

instructions

should

be

adhered

to.

FOLLOW

INSTRUCTIONS

—

Ail

operating

and

use

instructions

should

be

followed.

WATER

AND

MOISTURE

—

The

appliance

should

not

be

used

near

water

—

for

example,

near

a

bathtub,

washbow/,

kitchen

sink,

laundry

tub,

in

a

wet

basement,

or

near

a

swimming

pool,

etc.

LOCATION

—

The

appliance

should

be

installed

in

a

POWER

LINES

—

An

outdoor

antenna

should

be

located

away

from

power

lines.

NONUSE

PERIODS

—

The

power

cord

of

the

ap-

pliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time.

OBJECT

AND

LIQUID

ENTRY

—

Care

should

be

taken

so

that

objects

do

not

fall

and

liquids

are

not

spilled

into

the

enclosure

through

openings.

DAMAGE

REQUIRING

SERVICE

—

The

appliance

should

be

serviced

by

Pioneer

authorized

service

center

or

qualified

service

personnel

when:

e

The

power-supply

cord

or

the

plug

has

been

damaged;

or

e

Objects

have

fallen,

or

liquid

has

been

spilled

into

the

appliance;

or

OUTDOOR

ANTENNA

GROUNDING

—

If

an

outside

antenna

is

connected

to

the

antenna

terminal,

be

sure

the

antenna

system

is

grounded

so

as

to

provide

some

protection

against

voltage

surges

and

built

up

static

charges.

in

the

U.S.A.

section

810

of

the

National

Elec-

trical

Code,

ANSI/NFPA

No.

70-1984,

pro-

vides

information

with

respect

to

proper

grounding

of

the

mast

and

supporting

struc-

ture,

grounding

of

the

lead-in

wire

to

an

anten-

na

discharge

unit,

size

of

grounding

conduc-

tors,

location

of

antenna-discharge

unit,

con-

nection

to

grounding

electrodes,

and

re-

quirements

for

the

grounding

electrode.

See

stable

location.

The

appliance

has

been

exposed

to

rain;

or

Fig.

A.

WALL

OR

CEILING

MOUNTING

—

The

appliance

The

appliance

does

not

appear

to

operate

normally

should

not

be

mounted

to

a

wall

or

ceiling.

or

exhibits

a

marked

change

in

performance;

or

VENTILATION

—

The

appliance

should

be

situated

so

e

The

appliance

has

been

dropped;

or

the

enclosure

that

its

location

or

position

does

not

interfere

with

damaged.

its

proper

ventilation.

For

example,

the

appliance

SERVICING

—

The

user

should

not

attempt

to

service

should

not

be

situated

on

a

bed,

sofa,

rug,

or

the

appliance

beyond

that

described

in:

the

similar

surface

that

may

block

the

ventilation

open-

operating

instructions.

For

all

other

servicing,

con-

ings;

or,

placed

in

a

built-in

installation,

such

as

a

tact

the

nearest

Pioneer

authorized

service

center.

bookcase

or

cabinet

that

may

impede

the

flow

of

air

through

the

ventilation

openings.

HEAT

—

The

appliance

should

be

situated

away

from

heat

sources

such

as

radiators,

heat

registers,

a)

Use

No.

10

AWG

(5.3

mm?)

stoves,

or

other

appliances

(including

amplifiers)

copper,

No.

8

AWG

(8.4

/

that

produce

heat.

mm?)

aluminum,

No.

17

POWER

SOURCES

—

The

appliance

should

be

con-

POWER

LINES

AWG

(1.0

mm?)

copper-

nected

to

a

power

supply

only

of

the

type

describ-

clad

steel,

bronze

wire,

or

ed

in

the

operating

instructions

or

as

marked

on

the

SERVICE

larger

as

ground

wire.

appliance.

SO

eerpas

Saooce

b)

Secure

antenna

lead-in

and

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

at

plugs,

convenience

receptacles,

and

the

point

where

they

exit

from

the

appliance.

POLARIZATION

—

If

your

purchased

product

is

pro-

vided

with

a

polarized

power

plug,

please

read

the

following

instructions.

This

product

is

equipped

with

a

polarized

alternating

current

line

plug

(a

plug

having

one

blade

wider

than

the

other),

This

plug

will

fit

into

the

power

outlet

only

one

way.

This

is

a

TER

INSULATORS

b

ANTENNA

LEAD-IN

WIRE

TO

EXTERNAL

ANTENNA

d)

ground

wires

to

house

with

stand-off

insulators

spaced

from

4

feet

(1.22

meters)

to

6

feet

(1.83

meters)

apart.

c)

Mount

antenna

discharge

unit

as

closely

as

possible

to

where

lead-in

enters

house.

Use

jumper

wire

not

smaller

than-No.6

AWG-(13.3-mm?)

MINALS

OF

PROOUCT

GROUND

A

WIRE

a.b

1

GROUND

y

CLAMPS

disc.

ANTENN,

copper

or

equivalent

when

separate

antenna-ground-

ing

electrode

is

used.

NNA

HARGE

UNIT

c

SERVICE

ENTRANCE

EQUIPMENT

GROUNO

WIRE

a,b

safety

feature.

If

you

are

unable

to

insert

the

plug

fully

into

the

outlet,

try

reversing

the

plug.

If

the

plug

should

still

fail

to

fit,

contact

your

electrician

to

replace

your

obsolete

outlet.

Do

not

defeat

the

safety

purpose

of

the

polarized

plug.

CLEANING

—

The

appliance

should

be

cleaned

only

with

a

polishing

cloth

or

a

soft

dry

cloth.

Never

BONOING

i1__

ORIVEN

@

FEET

(2

44

mi

clean

with

furniture

wax,

benzine,

insecticides

or

ume?

Te

REQUIRED

BY

De

:

OCAL

CODES

SEE

other

volatile

liquids

since

they

may

corrode

the

FIG.A

u

NEC

SECTION

810-21

(1)

POWER

SERVICE

GROUNDING

ELECTRODE

SYSTEM

(e.

g.

interior

metal

water

pipe)

OPTIONAL

ANTENNA

GROUNDING

ELECTRODE

2

cabinet.

IMPORTANT

1

The

lightning

flash

with

arrowhead,

within

an

equilateral

triangle,

is

intended

to

alert

the

user

of

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.

IMPORTANT

2

If

the

apparatus

is

fitted

with

AC

mains

power

outlet(s),

see

REAR

PANEL

FACILITIES

for

convenient

connec-

tion

of

additional

Hi-Fi

component(s).

Make

all

connec-

tions

to

the

AC

outlet(s)

and

the

signal

terminals

first.

Connect

the

plug

to

the

wall

socket

last,

make

sure

that

the

power

switch

is

off.

Disconnect

the

wall

plug

when

the

equipment

is

not

in

(regular)

use,

e.g.

when

on

vacation.

<ARB1012>

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION:

TO

PREVENT

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

REMOVE

COVER

(OR

BACK).

NO

USER-

SERVICEABLE

PARTS

INSIDE.

REFER

SERVIC-

ING

TO

QUALIFIED

SERVICE

PERSONNEL.

FOR

USE

IN

THE

UNITED

KINGDOM

WARNING:

This

plug

must

only

be

connected

to

electronic

apparatus

equipped

with

suitable

sockets.

If

not,

cut

off

the

plug

and

fit

an

appropriate

type

in

accordance

with

the

instructions

below.

The

cut-off

plug

must

be

disposed

of

as

an

elec-

trical

shock

hazard

could

exist

if

connected

to

a

socket

outlet.

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

the

user

of

the

presence

of

important

operating

and

maintenance

(servicing)

instructions

in

the

literature

accompanying

the

appliance.

The

wires

in

this

mains

lead

are

coloured

in

accordance

with

the

following

code:

Blue:

Neutral

Brown:

Live

As

the

colours

of

the

wires

in

the

mains

lead

of

this

ap-

paratus

may

not

correspond

with

the

coloured

marking

identifying

the

terminals

in

your

plug

proceed

as

follows:

The

wire

which

is

coloured

blue

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

N

or

col-

oured

black.

The

wire

which

is

coloured

brown

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

col-

oured

red.

REAR

PANEL

FACILITIES

Two

pin-plug

cords

are

included

as

accessories.

These

are

to

be

used

to

connect

the

graphic

equalizer

to

your

stereo

ampili-

fier.

The

white

plug

is

for

the

left

channel,

and

the

red

plug

is

for

the

right

channel.

EQUALIZER

jacks

TAPE

jacks

7

EQUA

UZER

—<\———

(o

o6

©

©

O@

ieae

=|

INPUT

OUTPUT

AC

power

cord.

Pin-plug

cords

AC

outlet

Connect

to

auxiliary

AC

outlet

on

amplifier.

EQUALIZER

jacks

Connect

to

stereo

amplifier.

If

your

stereo

amplifier

has

only

one

set

of

tape

jacks,

connect

them

to

the

graphic

equalizer’s

INPUT

and

OUTPUT

terminals.

TAPE

jacks

If

your

stereo

amplifier

has

only

one

set

of

tape

jacks,

con-

nect

them

to

your

tape

deck.

If

your

amplifier

has

two

sets

of

tape

jacks

(Tape

1,

Tape

2),

a

second

tape

deck

may

be

connected

to

the

graphic

equalizer’s

tape

jacks.

AC

OUTLET

(UNSWITCHED

100

W

MAX)

Power

flows

continually

to

this

outlet,

regardless

of

whether

the

equalizer

is

switched

ON

or

OFF.

Electrical

power

con-

sumption

of

the

connected

equipment

should

not

exceed

100

W.

The

equalizer

should

be

disconnected

by

removing

the

mains

plug

from

the

wall

socket

when

not

in

regular

use,

e.g.

when

on

vacation.

NOTE:

Do

not

connect

appliances

with

high

power

consumption

such

as

heaters,

irons,

or

television

sets

to

the

AC

OUTLET

in

order

to

avoid

overheating

or

fire

risk.

This

can

cause

the

equalizer

to

malfunction.

STEREO

AMPLIFIER

TAPE

JACKS

When

stereo

amplifier

has

one

set

of

tape

jacks:

Connect

[INPUT]

jacks

to

the

stereo

amplifier’s

tape

REC

jacks,

and

connect

[OUTPUT]

jacks

to

the

stereo

amplifier’s

tape

PLAY

jacks.

Equalizer

Tape

jacks

jacks

ZN

Amplifier

Tape

jacks

fr

SN

When

stereo

amplifier

has

two

sets

of

tape

jacks:

Connect

[INPUT]

jacks

to

the

stereo

amplifier’s

AUDIO

ADAPTOR

or

Tape

2/Adaptor

[REC]

jacks,

and

connect

[OUTPUT]

jacks

to

the

stereo

amplifier’s

AUDIO

ADAPTOR

or

Tape

2/Adaptor

[PLAY]

jacks.

AUDIO

ADAPTOR

or

Tape

2/Adaptor

Equalizer

jacks

jacks

Tape

jacks

FF

ON

Tape

deck

2

fn

=

N

Amplifier

Tape

1

jacks

ff

N

Tape

deck

1

Connect

TAPE

REC

jacks

to

the

tape

deck’s

LINE

(REC)

jacks.

Connect

TAPE

PLAY

jacks

to

the

tape

deck’s

LINE

(PLAY)

jacks.

3

<ARB1012>

SYSTEM

CONNECTIONS

I

(When

amplifier

has

two

sets

of

tape

deck

jacks)

This

illustration

is

an

example

of

the

connections

mede

when

ponents.

For

details,

consult

the

Operating

Instructions

of

the

using

the

GR-470

in

conjunction

with

PlONEER’s

System

Com-

respective

components.

Accessory

cord

provided

with

the

tape

deck

LINE

INDUIT

ensTOT

1Ar

Cy

IPLAY]

Accessory

cord

provided

with

the

tape

deck

EQUALIZER

jacks

GR-470

AC

OUT LET

UNSWITCHED

100WMAX

TAPE

jacks

Speaker

systems

®

Accessory

cords

provided

with

GR-470

SWITCHED

TOT:

100W

MAX

LINE

a

anne

(REC)

[PLAY]

r

Power

plug

AC

wall

outlet

4

<ARB1012>

SYSTEM

CONNECTIONS

II

jacks)

ny

ne

et

tae

deck

When

connecting

components,

be

sure

that

all

power

swit-

ches

are

OFF.

For

details,

consult

the

Operating

Instructions

for

the

components

to

be

connected.

Accessory

cords

provid

the

tape

deck

EQUALIZER

jacks

AC

OUT LET

UNSWITCHED

1OOWMAX

TAPE

jacks

Accessory

cord

provided

with

GR-470

oe

Stereo

amplifier

AC

OUTLETS

ae

gg

an

TOTAL

100

W

MAx

UNSWITCHEO

100

W

MAX

=

le

Power

cord

Power

plug

Speaker

system

AC

wall

outlet

<ARB1012>

FRONT

PANEL

FACILITIES

Power

indicator

Tape

monitor

indicator

LEFT

channel

Equalizer

indicators

RIGHT

channel

Equalizer

indicators

@)

POWER

SWITCH

(POWER

STAND-BY/ON)

When

this

switch

is

set

to

the

ON

position,

power

is

supplied

to

the

unit's

main

circuits

(Power

indicator

lights).

The

unit's

power

switch

is

geared

to

selecting

the

transformer’s

secon-

dary

and

so

even

at

the

STAND-BY

position,

the

unit's

circui-

try

will

work

as

long

as

the

power

cord

is

connected

to

the

power

outlet.

Disconnect

the

power

cord

from

the

power

outlet

when

you

do

not

plan

to

use

the

unit

for

a

long

period

of

time.

NOTE:

Even

when

performing

playback

without

using

the

functions

of

this

component,

be

sure

that

its

power

switch

is

ON.

If

the

power

switch

is

OFF,

no

sound

will

be

produced

from

the

speakers.

(2)

EQUALIZER

SWITCH

(EQUALIZER)

When

this

switch

is

pressed,

the

equalizer

indicators

light

and

its

functions

become

operative.

When

pressed

once

again,

these

indicators

go

out

and

the

unit's

functions

are

turned

OFF.

Use

this

switch

in

the

following

manner:

ON:

When

using

the

equalizer

to

add

sound

compen-

sation

while

performing

mixing

operations

with

program

sources

(FM

broadcasts,

records,

tape

playback,

etc.),

and

playing

back

and/or

recording

the

results.

OFF:

When

not

using

the

equalizer,

but

playing

back

or

recording

program

sources

without

compen-

sation.

In

this

case,

the

equalizer

cannot

be

used,

but

tape

monitor

selection

can

be

performed

(when

tape

monitor

indicator

is

ON,

tape

playback,

and

when

OFF,

source

playback).

6

<ARB1012>

TAPE

|

esuauzer

|

monitor

|

(3)

TAPE

MONITOR

SWITCH

When

this

switch

is

pressed,

the

tape

monitor

indicator

lights.

When

pressed

again,

the

indicator

goes

out.

Use

this

switch

in

the

following

manner:

ON:

When

using

the

tape

deck

connected

to

the

equal-

izer’s

tape

terminals

to

play

back

tapes

with

or

with-

out

adding

sound

compensation.

OFF:

When

using

the

components

(tuner,

turntable,

tape

deck)

connected

to

the

stereo

amplifier

to

play

back

music

with

or

without

adding

sound

compensations.

(4)

EQUALIZER

CONTROLS

These

are

equalizer

controls

for

the

bands

60

Hz,

150

Hz,

400

Hz,

1

kHz,

2.4

kHz,

6

kHz

and

15

kHz.

When

the

equalizer

switch

has

been

set

to

ON,

these

con-

trols

may

be

adjusted.

When

a

control

is

raised

upwards

from

the

‘‘0”’

position,

the

frequency

band

corresponding

to

that

control

will

be

emphasized;

when

the

control

is

lowered,

the

frequency

band

will

be

attenuated.

These

controls

can

be

used

independently

for

right

and

left

chan-

nels.

NOTE:

/n

order

to

protect

your

speakers

from

damage

resulting

from

excessively

large

inputs,

whenever

augmenting

high-frequency

sounds

over

a

wide

range,

be

sure

not

to

raise

your

amplifier’s

sound

volume

too

high.

USING

THE

EQUALIZER

CONTROLS

The

graphic

equalizer

divides

the

music

source

into

a

number

of

frequency

bands

and

boosts

or

attenuates

the

level

at

each

of

the

frequencies,

enabling

much

finer

sound

quality

adjustments

than

ordinary

tone

controls

and

sound

field

compensation.

Some

examples

of

operation

are

given

below.

GRAPHIC

EQUALIZER

SO

ems

150

em

SOC

mmm

1

come

2.4K

comes

GK

ee

15K

eee

12

COMPENSATING

FOR

THE

PLAYBACK

FREQUENCY

RESPONSE

The

frequency

response

of

a

phono-cartridge

or

speaker

has

peaks

and

dips

in

the

high

range

and

low

range.

It

can

be

made

flat

by

adjusting

finely

the

controls

on

the

graphic

equalizer.

IMPROVING

THE

ACOUSTICS

OF

THE

LISTENING

ROOM

The

ideal

listening

room

is

one

where

the

transmission

fre-

quency

response

is

flat.

In

actual

fact,

however,

the

acoustics

vary

depending

on

the

effects

of

the

structure

of

the

room

and

its

furniture,

and

on

the

listening

position.

Although

there

is

minimal

treble

attenua-

tion

in

a

listening

room

surrounded

by

hard

walls

and

windows

and

having

a

bare

floor,

the

bass

sounds

are

reflected

to

a

great

extent.

In

rooms

like

this,

turn

up

the

150

Hz

control

slightly.

.

In

a

room

surrounded

by

drapes

and

with

carpets

on

the

floor,

there

is

minimal

reflection

of

the

sound

and

both

the

bass

and

the

treble

are

absorbed.

Amplitude

of

change

in

frequency

response

using

ordinary

tone

con-

Level

—

Frequency

Amplitude

of

change

in

frequency

response

using

graphic

equalizer

controls

Peak

or

wns,

ow

=

TS

Compensated

peak

Overall

frequency

response

Frequency

——=—

In

rooms

like

this,

turn

up

the

60

Hz

con-

trol

slightly

and

turn

up

the

frequency

controls

above

2.4

kHz

gradually.

The

above

examples

are

extremely

general.

The

acoustics

undergo

change

in

accord-

ance

with

the

furniture

in

the

listening

room,

the

height

of

the

ceiling

and

the

listening

position,

among

other

factors.

Play

the

music

and

try

operating

each

of

the

controls

to

produce

the

best

effect.

7

<ARB1012>

USING

THE

EQUALIZER

CONTROLS

COLORING

THE

REPRODUCED

SOUND

All

instruments

and

vocals

have

their

own

frequency

band,

as

shown

in

the

figure.

By

moving

the

controls

up

or

down,

the

volume

of

the

in-

struments

preferred

can

be

boosted

or

other

instruments

can

be

attenuated.

For

instance,

it

is

possible

to

boost

the

60

Hz

frequency

and

give

the

bass

drum

a

greater

‘‘punch’”’

or

boost

the

1

kHz

frequency

and

position

the

vocals

at

the

front.

When

the

6

kHz

frequency

is

boosted,

the

cymbals

and

‘high

hat’’

sound

much

clearer.

Instruments

and

vocals

have

a

great

many

harmonic

com-

ponents

along

with

the

fundamental

frequency

band

and

so

you

can

have

lots

of

fun

operating

the

7

controls

to

achieve

the

sound

of

your

choice.

NOTE:

In

order

to

protect

the

speakers

from

damage

resulting

from

power

overload,

do

not

excessively

increase

the

stereo

amp-

lifier’s

volume

level

when

boosting

the

treble

range

on

this

unit.

(4)

RECORDING

TECHNIQUES

USING

THE

GRAPHIC

EQUALIZER

Coloring

the

sound

of

vocals

or

instruments

The

sound

of

vocals

and

instruments

can

be

colored

at

will

by

operating

the

controls.

For

instance,

when

the

400,

1

k

and

2.4

k

controls

are

raised

and

the

other

controls

lowered,

people’s

voices

sound

as

if

heard

on

a

telephone.

Preventing

how!

during

mixing

play

Any

irritating

howl

during

play

can

be

prevented

by

lower-

ing

the

knob

corresponding

to

the

frequency

band

in

which

the

howl

occurs.

8

<ARB1012>

GO

sme

150

cums

400

meme

1K

omen

2.4

somes

GK

meme

15K

eomeee'Z

Soprase

a

=".

nate

——.

40 60

100

400

600

1k

2k

4k

6k

10k

20k

Frequency

(Hz)

Noise

can

be

reduced

during

recording

and

playback

When

the

high-range

controls

are

boosted

in

step

fashion

during

recording

and

then

lowered

in

reverse

fashion

dur-

ing

playback,

tape

hiss

and

other

high-range

noise

can

be

reduced.

Creating

recorded

tapes

most

compatible

with

the

playback

equipment

A

sound

with

a

greater

‘‘punch’”’

can

be

recorded

for

play-

back

on

car

stereo

equipment

if

the

ultra-low-range,

which

is

hard

to

hear,

is

cut

out

and

the

mid-range

is

boosted.

INDIVIDUAL

OPERATIONS

14

COMBINING

THE

EQUALIZER

WITH

RECORD

PLAYBACK

———

Perform

the

following

operations

in

numerical

order.

Turntable

Play

back

record.

Set

amplifier’s

Function

switch

to

PHONO

(or

INPUT

SELECTOR

switch

to

PHONO).

Stereo

amplifier

Left

(L)

Right

(R)

Right

channel

Left

channel!

speaker

speaker

Set

amplifier’s

ADAPTOR/TAPE

2

switch

to

ON

(or

TAPE

monitor

switch).

EQUALIZER

EQUALIZER

INPUT

OUTPUT

Set

equalizer

switch

to

ON

Set

tape

monitor

switch

to

OFF.

Adjust

equalizer

controls.

)

60

wom

150

momen

400

meme

1

mm

2.4

comme

GK

cm

15K

eee

1Z

a

a

Ua

vc

ary

Press

to

ON.

Set

to

OFF.

Adjust

to

desired

levels.

9

<ARB1012>

INDIVIDUAL

OPERATIONS

Ld

USING

THE

EQUALIZER

WHILE

LISTENING

TO

BROADCASTS

AND

RECORDING

THE

RESULTS.

———

Perform

the

following

operations

in

numerical

order.

Record

results

on

tape.

Tuner

Tune

in

desired

station.

Left

(L)

Left

channel

speaker

EQUALIZER

INPUT

(A)

set

amplifier’s

Function

switch

to

TUNER

(or

INPUT

SELECTOR

switch

to

TUNER).

Ei

(Z)’

Record

results

on

tape.

(6)

Adjust

equalizer

controls.

9

60

ems

150

mmo

O00

oem

1

ome

2.0K

ce

GK

mee

1

SK

ce

HZ

¢Adjust

to

desired

levels.

10

<ARB1012>

e¢

When

tape

deck

2

connected

to

the

GR-470,

or

tape

deck

1

connected

to

the

stereo

amplifier

is

set

to

the

recording

mode,

the

contents

of

the

equalizer-compensated

broadcast

can

be

recorded

on

cassette

tape.

Set

amplifier’s

ADAPTOR/TAPE

2

switch

to

ON

(or

TAPE

monitor

switch).

Right

(R)

Right

channel

speaker

EQUALIZER

OUTPUT

Set

equalizer

switch

to

ON.

Set

tape

monitor

switch

to

OFF.

Press

to

ON.

Set

to

OFF.