Pioneer Gr-551 User manual

Operating

Instructions

GRAPHIC

EQUALIZER

R-551

Thank.

you.for

buying

this.

Pioneer

product.

Please

read

through

these

operating

instructions

so

you

will

know

how

to.

operate

your

mode!

properly:

After

you

have

+

finished

reading

the.instructions,

put

them

away

in

a

safe

place

for

future

reférence.

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

con-

PEST

necting

and

operating

the

unit

is

the

same.

WARNING

:710

Prevent

FIRE

OR

SHOCK

HAZ-

ARD,

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

ina

secure

area.

This

is

for

your

security.

:

[For.Canadian

model]

CAUTION:10:

Prevent

ELecTRIC

SHOCK

DO

NOT

USE

THIS

(POLARIZED)

PLUG

WITH

AN

EXTENSION

CORD,

RECEPTACLE

OR

OTHER

OUTLET

UNLESS:

THE

BLADES.

CAN

BE

FULLY

INSERTED

TO

PREVENT

BLADE

EXPOSURE.

ATTENTION:

pour

prevenin

tes

cHocs

ELECTRIQUES

NE

PAS

UTILISER

CETTE

FICHE

POLARISEE

AVEC

UN

PROLONGATEUR

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.

Ae

LINE

VOLTAGE.

SELECTOR

SWITCH

Only:

multi-voltage

models

are:

‘provided’

with’

this.

switch.

U.S.,

Canadian,

European,

U.K.,

and

Australian

models.

are

not

provided

with’

this

‘switch.

Mains.

voltages

in

Saudi..Arabia:.are.127V

and:

220V:

only.

Never

use

this

model!

with

110V

setting

in

Saudi

Arabia.

The

line

voltage

selector

switch

ison

the’

rear:

panel.

Before

your-model-is.shipped

from

the

factory,

this

switch

is

setto

the

power

requirements

of

the

destination.

Check

ghat

it

is

set

properly

before

plugging

the

power

cord

into

the

KC

outlet.

if

the

voltage

is

not

properly

set

or

if

you

move:to

an

area

where

the

voltage

requirements

differ,

adjust

the

selector

switch

ag

follows.

eo

'Use

a

medium-sized

(flat-blade):

screwdriver..(nsert

the:

tip

of

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

Medium-sized

screwdriver

@

PIONEER’

The

future

of

sound

and

vision.

ie

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

—

Ail

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to.

FOLLOW

INSTRUCTIONS

—

All

operating

and

use

instructions

should

be

followed.

WATER

AND

MOISTURE

—

The

appliance

should

not

be

used

near

water

—

for

example,-Tear

a

bathtub,

washbow!,

kitchen

sink,

laundry

tub,

ing

wet

basement,

or

near

a

swimming

pool,

etc.

LOCATION

—

The

appliance

should

be

installed

in

a

stable

location.

WALL

OR

CEILING

MOUNTING

—

The

appliance

should

not

be

mounted

to.a

wall-or

ceiling.

VENTILATION

—

The

appliance

should

be

‘situated

50

that

its

location

ar

position

dees

not

interfere

with

its

proper

ventilation.

For

example;

the-ap~

pliance

should

not

be

situated

on

@

béd,

sofa,

rug,

‘or

similar

surface

that

may

block

the

ventilation

openings;

or,

placed

in

a

built-in

installation,

such:

as

@

bookcasé

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

registets,

stoves,

or

other

appliances

(including

amplifiers)

that

produce

heat.

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.

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

provided

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'safety

feature.

If

you

aré‘unable

to

insert

the

plug

fully.

into

the

outlet,

try

reversing

the

plug.

Ifthe

plug

should

still

fail

to

fit,

contact

Yolir

éléctrician’

to

replace

your

obsolete’

outlet:

Do

not

defeat

the

safety.

purpose

of

the

polarized,

SERVICE

ENTRANCE

EQUIPMENT

SAFETY

INSTRUCTIONS

POWER

LINES

—

An

outdoor

antenna

should

be

_

located

away.

from

power

lines.

NONUSE

PERIODS

—The

power

‘cord

of

the

appliance

should

be

unplugged:

when

left

unused

for

a

long

peri

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

a

Pioneer

authorized

ser-

vice

center

of

qualified

‘service

‘personnel

whe'

The

power-supply

cord

or

the

plug

has

been

damaged:

or

Objects

have

fallen,

or

liquid

has

been

spilled

into

the

appliance:

oF

The

appliance

has

been

exposed

to-rain:

or

‘The.

appliance.

does:

not

appear

to-operate-nor=*

mally

or

exhibits

8

marked

change

in

perfor-

mance:

or

@

The

appliance

has

been

dropped;

or

thé

enclosure

damaged:

SERVICING

“The”

user’

should”

not”

attempt

to

‘service

the

appliance

beyond

that

described

in

the

‘operating

instructions.

For

all

other

seivicing,

contact

the

neatest

Pioneer

authorized

service

center.

POWER

LINES

SERVICE

ENTRANCE

‘CONDUCTORS.

OUTDOOR

ANTENNA

GROUNDING

—

if

an

out

side

antenna

is

connected

to

the

antenna

termi-

fal,

be

Sure

the

antenria

system

is

grounded

so

as.

ta

provide

some

protection

against

volage

surges:

‘and

built

up

static

charges,

In

the

U.S.A.

section

810

of

the

National

Elec~

trical

Code,

ANSI/NFPA

No:

70-1984,

provides

information

with

respect

to

proper

grounding

of

the

mast

and

supporting

structuré;

grounding

of

the

lead-in

wire

to

an

antenna

discharge

unit,

size

‘of

grounding

conductors,

location

of

antenna-

dischiarge.

unit,

connection

togrounding

elec-

trodes,

and

tequirements

for

the

grounding

elec

trode.

See

Fig.

Az

Use

No.

10

AWG

(5.3

mn?)

copy

per,

No.

8

AWG

(8.4

mm?)

als

minum,

No.

17

AWG

(1.0

mm’

2y,

Copperciad

steel,

bronze’

wire,

oF

farger

as

ground

wire.

Secure

antenna

lead-in

and

ground

wires

to:

house.

with

stand-off

insulators

spaced

from.

4

feet

(1.22

meters)

to’

6

feet

(1.83

metefs)

apart:

Mount

antenna

discharge

unit

a3.

closely

as’

possible

to

where

lead-

in

enters

house:

STAND-OFF__d)_Use

jumper

wire

not

smaller

thar

INSULATORS

&

No.6.

AWG

(13.3

mm?)

copper,

or

the

equivalent,

when’

a

sepa-

rate

antenna-grounding

electrode:

is

used:

See

NEC

Section

810-24

(j):

ANTENNA’

LEAD-IN

WIRE

TO

EXTERNAL

ANTENNA

TERMINALS

OF

PRODUCT

ANTENNA

DISCHARGE

UNIT

¢

GROUND

POWER

SERVICE,

GROUNDING

ELECTRODE

SYSTEI

{@9.

interior

metal

water

pipe)

plug.

CLEANING

=The

‘dppiiaince'should

be

cléaned'only

_with:a

polishing.cloth

or

a:soft

dry

cloth..

Never

lean

with

furniture

wax,

benzine,

insecticides

or

pono

Ih

DRIVEN

S

FEET

(

other

volatile

liquids

since

they

may

corrode

the

SoMeewa

HIP

Reatlnee

ey

cabinet.

FIG.A

M...::

LOCAL

CODES

SEE

2

WU"

NEC

SECTION

810-24

(f).

=

7

OPTIONAL

ANTENNA

GROUNDING

ELECTRODE

DRIVEN

8

FEET

(2.44

m)

IMPORTANT

1

RISK

OF

ELECTRIC

SHOCK

OO

NOT

OPEN

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:

CAUTION:

TO

PREVENT

THE

RISK

OF

ELECTRIC

SHOCK;

DO._NOT..

REMOVE

COVER

(OR

.BACK}...NO

The

lightning

flash

with’

arrowhead,

within

an

equi-

lateral,

triangle,

is

intended:

to:

alert:

the

user

of

‘the

presence

of

uninsulated

“dangerous

voltage”

within

the

product's’

enclosure’

that

may

be’

of

‘sufficient

USER-SERVICEABLE

PARTS

INSIDE.

REFER

magnitude

to

constitute

a

risk

of

electric

shock.

‘to

SERVICING:

To

QUALIFIED

SERVICE

persons,

PERSONNEL.

The.

wires

in.

this

mains.

Jead:

are

coloured:

in

accor-

FOR

USE

IN

THE

UNITED

dance

with

the

following

code:

KINGDOM

Bliss

Neuite

Brownie»

Live

WARNING:

This

plug

must

only

be

connécted

IMPORTANT

2

If

the

apparatus

is

fitted

with

AC

mains

power

out-

let(s),

see

REAR

PANEL

FACILITIES.

for

convenient

As

the

Colours

of

the

wires

in

the

mains

lead

of

this:

connection

of

additional

Hi-Fi

component(s).

Make

ali

connections

to

the

AC

outlet(s)

and

the

signal

terminals

first.

Connect

the:plug

to.

the

wall

socket

fast,

make

sure

that

the

power

switch

is

off.

Discon-

nect

the

wall

plug

when

the

equipment

is

not

in

to

electronic

apparatus

equipped

with

suitable

sockets.

if

not,

cut

off

the

plug

and

fit

an

appropriate

type

in

accordance

with

the

instructions

below.

apparatus”

may:

not

correspond

‘with:

the:

cofoured:

markirig

identifying

the

terminals

in

your

plug

proceed:

as

foliows:

The

wire

which

is

coloured

bite

must

be

connected

to:

the

terminal

which

is

marked

with

the

letter

N

of

(regular)

use,

e.g.

when

on

vacation.

‘The

cut-off

plug

must

be

disposed

of

as

an

elactrical

shock

hazard

could

exist

if

connected

to

a

socket

outlet.

coloured

black.

The

wire

which

is

coloured

brown

must

bé

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

red.

2

Rear

Panel

Facilities.

System

Connections!

.

System

Connections

Il

Front

Panel

Facilities...

Using

the

Equalizer

Controls

When

Playing

RECOrdS..........2::ccccsscssseceneeseeseersnecsseesteeene

Ons

Doh

w

CONTENTS

When

Recording

Broadcasts:

When

Playing

Back

Tapes

When

Editing

Tapes.

Troubleshooting..

Functioning

of

Switches

Specifications

v2...

REAR

PANEL

FACILITIES

Two

pin-plug

cords‘are

included

as

accessories.

These

aré

to

be

used

to

connect

the

graphic

equalizer

to

your

stereo

ampli-

fier.

The

white

plug

is

for

the

left

channel;

and

the

red

plug

is

for

the

right

channel.

EQUALIZER

jacks

—=4

T

TAPE

jacks

Pin-plug

cords

EQUALIZER

jacks

Connect

to

stereo

amplifier.

TAPE

jacks

Connect

to

tape

deck.

AC

OUTLET

(UNSWITCHED

100

W

MAX)

Power

flows

continually

to

this

outlet,

regardiess

of

whether

the

equalizer

is

switched

ON

or

STANDBY.

Electrical

power

consumprion

of

the:

connected

equipment

should

not

exceed

100

W.

The

.equalizer

should:.be

disconnected

by

ramioving

the’

mains

plug

from

the

AC

wall

socket

when

not

in-regular

use,

é.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

of

fire

risk,

|

This

can

cause

the

equalizer

to

malfunction.

STEREO

AMPLIFIER

TAPE

JACKS

When

stereo

amplifier

has

one

set

of

tape

jacks:

Connect

the

unit's

(GE)

INPUT

jacks

to

the

stereo

amplifier’s

TAPE

REC

jacks,

and

connect

(AY)

OUT-

PUT

jacks

to

the

stereo

amplifier’s

TAPE

PLAY

jacks,

as

shown

on

page

5.

Equalizer

jacks

Tape

jacks

Tape

jacks

OT,

Amplifier

AC

power

cord.

Connect

to

auxiliary.

AC

outlet.on.

amplifier.

|

illustration

shows

U.K.

model.

illustration.not

applicable

to

U.K.

model.

UNSWETCHED

100

W

MAK.

AGoutlet

When

stereo

amplifier

has

two

sets

of

tape

jacks:

Connect’

the

unit's

(

GP)

INPUT.

jacks.to.

the

stereo

amplifier’s:

ADAPTOR/TAPE2

or

TAPE2

[REC]

jacks,

and

connect

((PLAY))

OUTPUT

jacks

to

the

stereo

amplifir’s

ADAPTOR/TAPE2

or

TAPE2

[PLAY]

jaoks,

sis.

shown

on

page

4.

ADAPTOR/TAPE2

or

TAPE2

jacks

Equalizer.

jacks

Tape

jacks

ON

.

Tape

deck

2.

Tape

Tl

jacks

‘Tape

deck

7

Connect

TAPEQ@2@ijacks

to

the

tape

deck2’s

LINE

{REC}

jacks.

Connect

TAPE

jacks

to

the

tape

deck2’s

LINE

(PLAY)

jacks.

3

SYSTEM

CONNECTIONS

“(When

amplifier

has

two

sets

of

tape

deck

jacks,)

When

connecting

components,

be

sure

that.all.

power

PIONEER’s

components...For..details;

consult

the

switches

are

OFF.

This

illustration

is

an

exampie-of

the:con-

Operating

Instructions

of

the

respective

camponents.

nections

made

when

using

the

Gr-551

in

conjunction

with

oNE

(ee

——

input

(UFO

fe

»

i

2®

©

iv,

S,

Accessory

cord.

provided

with

the

tape

deck

Accessory

cord

provided

with

the

tape

deck

EQUALIZER

jacks

i

unsWitenieg

7

300.

MAX.

TAPE

jacks

Power

cord

Accessory:

cord:provided

with

GR=551

Stereo

amplifier

Accessory

cord

provided

with

GR-551

To

AC

wall

socket

(or

amplifier's

pe

AC

OUTLET}

Power.

plug

AC

wall

AC

wall

socket

*

illustration

not

applicable

to

U.K.

model.

4

{When.

amplifier

has

only

one

set

of.

tape

deck

SYSTEM

CONNECTIONS

I

jacks.)

When

connecting

components,

be

sure

that

all

power

switches

are

OFF.

For

details,

consult

the

Operating

Instruc-

tions

for

the

components

to

be

connected.

B

"Ox

—

hy

=|

Tape

deck

Accessory

cords

provided

with

the

tape

deck

EQUALIZER

jacks

GR-551

a

=

he

ewes)

EI

100

W

WAX

aauizen

rae

(ee)S

(Es)

2

‘gurevr

G

TAPE

jacks

Accessory

cord

provided

with

GR-551

Stereo

amplifier

aC

OUTLETS

RO?

[oljelele

_—.—s—s

9

Power:

cord

Power

plug

*

Hiustration

not

applicable

to

U.K.

model.

AC

wall

socket

Gt)

*

5

FRONT

PANEL

FACILITIES

|

EQUALIZER

Switch

When

this

switch

is

pressed,

the

EQUALIZER

indicator

Jights

and

its

functions

become

operative.

When

pressed

once

again,

this

indicator

goes

out

and

its

functions

be=

come

inoperative.

Use

this

switch

in

the

following

manner:

;

ON:

When

using

the

equalizer

to

add

sound

compensa-

tion

to

program

sources

(FM

broadcasts,

records,

tape

playback,

etc.).

OFF:

When

not

using

the

equalizer,

normal

playing

back

or

recording:

program

sources

will

be

performed

without

compensation.

NOTE:

Even

when

performing

playback

without

using

the

functions

of

this

com-

|

ponent,

if

the

power

switch

is

OFF,

and

the

equalizer

switch

is

OFF,

there

will

still

be

sound.

The

unit's

tape

monitor

switch

can

also

be

switched

ON

or

OFF,

(TAPE

MONITOR

indicator

will

not

light.)

EQUALIZER

indicator

LEFT

GHANNEL

spéctrum

analyzer.

=

Displays

the

amplification

of

the

output

signal

compensated

with

this

instrument.

.

MIPIONEER

srenco

onamic

efuacizca

omacs

TAPE

MONITOR

Switch

i

When

this

switch.

is

pressed,..the

FAPE..MONITOR:

indi-

cator

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

of

with-

out

adding

sound

compensation.

*y,

OFF:

When

using

the

components

(tuner,

turntable;

tape

deck)

connected

to

the

steréo.

amplifier

to

play

back

|

music

with

or

without

adding

sound

compensations.

|

NOTE:

Pressing

the

TAPE

MONITOR

switch.

ON/OFF

during

recording

will

cause

breaks

in.

the

recarding:To

avoid:

this,

do:

not

press

the

tape

monitor

switch

while

recording.

TAPE

MONITOR

indicator

RIGHT

CHANNEL

spectrum.analyzer.

Displays

the

amplification

of

the

output

signal

compensated

with

this

instrument.

POWER

Switch

(POWER

STANDBY/ON)

When

this

switch

is

setto

the

ON

position,

poweris

supplied

to

|

the

unit’s

main

circuits

(The

spectrum

analyzer

frequency

dis-

play

lights.}'The

unit's

power

switch

is

geared

to:selecting

the

transformer's.

secondaty.and

so.even.

at.

the

STANDBY

posi-

|

tion,

the

unit's

circuitry

will

work

as

long

as

the

power

cord

is

connected

tothe

AC

power

outlet.

Disconnect

the

power

cord

from

the

AC

power

outlet

when

you

do

not

plan

to

use

the

unit

for

a

long

period

of

time.

6

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

‘‘O"'

position,

the

frequency

band

corresponding

to:that

contro!

will

be

emphasized;

when:

the

controlis

lowered,

the

frequency

band

will

be

attenuated:

These

controls

can

be

used

independently

for

right

and

left

chan-

nels.

NOTE:

Jn

order

to

protect

your

speakers

from

damage

resulting

frort

excessively

large

inputs,

whenever

augmenting

high-frequency

sounds

over

a

wide

range,

be

sure

not

to

raise

your

ampiitier's

sound

volume

tea

high.

USING

THE

EQUALIZER

CONTROLS

The

graphic

equalizer

divides

the.

music

source

inte

a

number

of

frequency

bands

and

boosts

or

attenuatés

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

aa)

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:

(2)

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.

tian

LEV!

———

Level

f

Amplitude

trois

response

using

ordinary

tone

con-

;

of:change

in

frequency:|

+10

£

+3!

'

+6

+4

;

+2

+

ot

i

a!

-4

-6

:

-

a}

:

-10

?

eg

7

i

;

.

jam

ae

ee

zi

El

10

100

tk

10k

(Hz)

Serie

Frequency:

:

(08)

T

+

Tm

g

Y

s410 soz]

j150Hz]

dogtz

TikH2

2

akHz

|

@kH2

|

iskHe

|

}

t

+8

|

P+

+6

i

4

+4

i

}.

+2

;

‘

4

H 4

|

H

9

‘

>

|

es

u H

:

Tt

6

i

seo

y

mete

|

7

-19

,

t

.

ee

moma

eLA

10

100

Tk

10k

(Hz)

~

a

‘Level

ee

Frequency

Amplitude

of

change

in

frequecny

|

response

using

graphic

equaliger

controls:

mresers

Compensated

peak

4

Peak

©

Suds

RY

|

Ovefall

frequency

tesponse

Although

there

is

minimal

treble

attenua-

tion

in

a

listening:

room:

surrounded

by

|

hard

walis:

and

windows.

and

having

a.

|

bate

floor;

the

bass

’sotinds

are

reflected

|

to

@

great.

extent.

in:rooms.

like:

these;:

turn:

up:the:150:Hz:

control

slightly.

.

In

a

room

surrounded

by

drapes

and

with

Catpets

On

thé

floor,

there

is

minimal

reflection

of

the

Sound

and

both

the

bass

|

and

the

treble

are

absorbed.

Frequency:

———

in

rooms

like

these,

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:

ini

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.

oY

USING

THE

EQUALIZER

CONTROLS

COLORING

THE

REPRODUCED

SOUND

Allinstruments.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:

Pi

In

ordét

to

protect

the.

speakers

from

darnage

resulting.

from

power

overload,

do

not

excessively

increase

the

stereo

amp-

lifier’s

volume

lével

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

aré*

raised

and

the

other

controls

lowered,

people’s

voices

sound

as

if

heard

on

a

telephone.

Preventing

how!

during

mixing

play

Any

irritating

how!

during

play

can

be

prevented

by:lower-

ing

the

knob

corresponding

to

the

frequency

band

in:;which

the

howl

occurs.

8

ae

40:60:

100

200

400

600

Fw

ah

Gk

10m

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

ifthe

ultra-low-range,

which:

is

hard

to

hear,

is

cut

out

and

the

mid-range

is

boosted:

WHEN

PLAYING

RECORDS

4

COMBINING

THE

EQUALIZER

WITH:

RECORD

PLAYBACK

Perform

the

following

operations

in

numerical

order.

nee:

;

Set

amplitier‘s

Function

‘y

switch

to.

PHONO

(or.

INPUT

SELECTOR

switch.

to.

PHONO).

-

When

using

the

amplifier

with

REC

SELECTOR

switch

REC

SELECTOR

>

SOURCE

|

Play

back

record.

Stereo

aniplifier

Left(L)

Leftichannei

:

Right

channel

speaker,

4

speaker

ADAPTOR/TAPE

2

Set

amplifier’s

ADAPTOR/

TAPE

2

switch

or

TAPE

2:

switch

(or

TAPE

MONITOR

switch)

to

ON.

EQUALIZER

INPUT

OUTPUT

Set

EQUALIZER

switch

to

ON.

\

Set

TAPE

MONITOR

switch

to:

OFF.

“

a

Adjust

equalizer

controls.

r

=

f—

\

EQUALIZER

APE:

MONITOR]

m=

OFF

ce

=

DN

eo

="

Press

to

ON:

Set

to

OFF.

*Adjust

to

desired

levels.

9

*

When

connecting

this

unit

to

the

TAPE

2

termi-

nals

of

the

amplifier,

depending

on

the

type

of

WHEN

RECORDING

BROADCASTS

amplifier-used;it

may:not

be

possibleto

makea

recording

via

this

unit.

u@

USING

THE

EQUALIZER

WHILE

LISTENING

TO.

BROADCASTS:AND:

RECORDING

THE

RESULTS,

Perform

the

following

operations

in

numerical

order.

When

tape

deck2

connected

to

the

GR-551,

or

Record

results

on

tape.

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.

|

=

a"

Set

amplifier’s

ADAPTOR/

:

TAPE

2

switch

or

TAPE

2

switch

Fane

in

desire

(or

TAPE

MONITOR

switch}

station.

‘ e

tO

ON.

amplifier

oh

ES

Left

channel

.

Right

channel

speaker

speaker:

E

UALIZER

:

EQUALIZER

SNEUT

=

OUTPUT

Set

amplifier’s

Function

switch

to

TUNER

(or

INPUT

SELECTOR

switch

.

OUTPUT

to.

TUNER).

(PLAY)

When

using

the

amplifier

|

'

with

REC

SELECTOR

switch

ra

REC

SELECTOR

:

Set

tape

monitor

switch

>

TAPE

COPY

2

4

Oat

8

to:0FF:

as

a

Set

equalizer

switch

to

ON.

Adjust

equalizer

controls,

_

we

Press

to

ON.

Set

to

OFF.

ey

*Adjust

to

desired

levels.

40

<ARBIO79.>

Pioneer GR-551 User manual

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