Hitachi Hca-7500 User manual

HCA-7500

STEREO

CONTROL

AMPLIFIER

INSTRUCTION

MANUAL

Congratulations!

HITACHI

Hi-Fi

products

are

the

proud

result

of

HITACHI

engineering

research

and

development

and

over

50

years

of

experience

in

electronics.

Laboratories

and

major

testing

facilities

are

maintained

in

Tokyo

and

Toyokawa

(Japan).

In

choosing

this

fine

HITACH!

Hi-Fi

product

you

have

demonstrated

an

acute

awareness

of

‘getting

the

most

for

your

money”.

With

HITACHI

products

this

is

not

an

idle

boast.

KEY

TO

ILLUSTRATIONS

GS

BOGDOOEQVQOEOHOHVO

POWER

switch

POWER

INDICATOR

LOW

FILTER

switch

HIGH

FILTER

switch

MODE

switch

BALANCE

control

CARTRIDGE

LOAD

selectors

Volume

control

(LEVEL

ATTENUATOR)

MUTING

switch

FUNCTION

switch

TAPE

switch

TREBLE

control

TURNOVER

switches

(BASS,

TREBLE)

TONE

switch

BASS

control

VQPBBW®POSHOoOoQooe

2

Ground

terminal

(GND)

PHONO

1

input

terminals

PHONO

2

input

terminals

TUNER

input

terminals

AUX

input

terminals

TAPE

1

PLAY

terminals

TAPE

1

REC

terminals

TAPE

2

PLAY

terminals

TAPE

2

REC

terminals

OUTPUT

terminals

AC

outlets

(for

U.S.A.

&

Canada

set

only)

Power

supply

cord

VOLTAGE

SELECTOR

(except

for

U.S.A.&

Canada

set)

SAFEGUARD

Electrical

energy

can

perform

many

useful

functions.

This

unit

has

been

engineered

and

manufactured

to

assure

your

personal

safety.

Improper

use

can

result

in

potential

electrical

shock

or

fire

hazards.

In

order

not

to

defeat

the

safeguards,

observe

the

following

instructions

for

its

installation,

use

and

servicing.

ysi|bug

INSTALLATION

When

installing

the

HCA-7500

choose

a

place

that

satisfies

the

following

conditions.

1;

2.

3.

4.

A

place

out

of

direct

sunlight

and

away

from

stoves,

etc.

A

place

where

ventilation

is

good

and

which

is

free

from

moisture

and

dust.

Install

on

a

stable

and

vibration-free

surface.

Hum

noise

is

sometimes

generated

if

the

metal

parts

(like

a

cover)

of

another

audio

component

come

into

contact

with

the

unit,

so

leave

proper

clearances.

Do

not

allow

the

metal

parts

of

another

audio

component

to

come

into

contact

with

the

unit.

TUNER

CASSETTE

DECK

reryxT

a

HABBO

OO

HCA-7500

WARNING:

TO

PREVENT

FIRE

OR

SHOCK

HAZARD,

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE.

FEATURES

1.

ICL

Equalizer

Circuit

for

High-Fidelity

Record

Reproduction

The

equalizer

circuit

features

a

3-stage,

direct-coupled

5-transistor

circuit

(differential

FET

for

first

stage,

PNP

differential

transistor,

constant

current

drive

NPN

transistor)

for

a

low

distortion

and

a

high

S/N

ratio,

as

well

as

for

high

stability.

There

are

no

coupling

capacitors

in

the

input

stage

with

the

ICL

(input

capacitor-less}

system,

while

the

output

stage

employs

metalized

polyester

film

capacitors

which

are

non-inductive

and

which

feature

a

superior

high-frequency

response,

These

features

improve

the

frequency

characteristics

and

the

phase

characteristics.

.

RIAA

Elements

with

+1%

Tolerance

Parts

The

RIAA

elements

employ

metal-film

resistors

and

styrol

capacitors

with

a

+1%

tolerance.

These

parts

are

based

on

MIL

standards

and

display

outstanding

temperature

characteristics.

The

RIAA

deviation

across

a

20

Hz

—

20

kHz

frequency

band

is

designed

to

be

less

than +0.2

dB.

.

Low-distortion,

Low-noise

Tone

Control

Circuit

This

is

a

3-stage,

direct-coupled

6-transistor

circuit

(differential

FET

for

first

stage,

constant

current

drive

PNP

transistor

push-pull)

which

not

only

makes

for

low

distortion

and

a

high

S/N

ratio,

but

also

provides

high

stability.

.

Tone

Controls

for

Each

Channel

with

New

Tone

Control

Circuit

The

HCA-7500

adopts

a

new

tone

defeat

control

between

the

bass

and

treble

controls.

Furthermore,

any

de-

viations

in

the

perfect

tone

balance

between

the

left

and

right

channels,

caused

by

the

positioning

of

the

speakers,

for

example,

can

be

compensated

for.

.

Low

Filter

that

Neatly

Cuts

off

Wow

and

Ultra-low

Frequency

Rumble

without

Impairing

Sound

Quality

The

low

filter

can

cut

off

wow

and

rumble

in

the

ultra-low

frequencies

(15

Hz,

12

dB/oct.)

without

impairing

the

quality

of

the

reproduced

sound.

.

New

32-contact

4-gang

Attenuator

Volume

Control

This

control

enables

very

fine

adjustments

across

a

wide

range

of

0

to

70

dB,

yielding

accurate

attenuation

without

producing

any

deviation

between

the

left

and

right

channels.

In

addition,

the

4-gang

volume

control

improves

the

signal-to-noise

ratio

when

set

to

low-volume

levels.

.

Built-in

Muting

Circuit

with

Reed

Relays

The

muting

circuit

is

actuated

for

about

5

seconds

through

the

reed

relays

so

as

to

suppress

shock

noise

when

the

amplifier

is

switched

on.

.

Excellent

Operability,

Sophisticated

Design

All

the

switches

and

the

controls

are

designed

and

positioned

in

keeping

with

the

principles

of

human

engi-

neering

for

optimal

operational

ease.

The

amplifier’s

exterior

is

appealingly

solid

and

sophisticated.

Hitachi

has

managed

to

make

the

operation

of

the

32-contact

attenuator

volume

control

and

all

the

other

front

panel

switches

and

controls

not

only

easy

but

also

accurate.

E-2

Important

for

U.K.:

WARNING:

This

apparatus

must

be

earthed.

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

or

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.

or

coloured

RED.

The

wire

which

is

coloured

BROWN

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

CONTROLS

AND

SWITCHES

@

POWER

switch

When

this

switch

is

set

to

ON,

power

is

supplied

to

the

amplifier

and

the

POWER

INDICATOR

@

lights

up.

There

is

a

built-in

muting

circuit

so

that

the

relays

are

actuated

about

5

seconds

after

the

power

has

been

switched

on.

Then

the

amplifier

starts

normal

operation.

(2)

POWER

INDICATOR

This

lights

up

when

the

POWER

switch

(@®

is

set

to

ON.

(3)

LOW

FILTER

switch

When

this

switch

is

set

to

the

15

Hz

position,

low

frequency

noise

which

is

generated

by

warps

in

the

records

is

cut

out.

It

is

wise

to

keep

this

switch

at

the

15

Hz

position

since

it

is

effective

in

cutting

out

low

frequency

noise

outside

the

range

of

hearing

which

can

adversely

affect

the

speakers

(12

dB/oct.).

@

HIGH

FILTER

switch

Set

this

switch

to

the

8

kHz

position

when

you

want

to

cut

out

scratch

noise

from

records,

hiss

noise

from

tapes

and

high-frequency

noise

when

listening

to

a

broadcast.

This

switch

is

designed

to

cut

out

smoothly

the

treble

from

8

kHz

at

6

dB/oct.

©)

MODE

switch

This

switch allows

any

of

five

selections.

STEREO

REVERSE.

.

.This

reverses

the

left

and

right

channels.

NORMAL

..

.This

gives

a

normal

stereo

ef-

fect.

MONO

PR

Vee

oS

The

left

and

right

channel

signals

are

mixed.

RC

eee

Only

the

signals

from

the

left

input

terminals

are

repro-

duced

through

the

left

and

right

speakers.

Res

2

edd

oe

Only

the

signals

from

the

right

input

terminals

are

re-

produced

through

the

left

and

right

speakers.

©

BALANCE

control

Adjusts

the

balance

of

right

and

left

channel

levels.

@

CARTRIDGE

LOAD

selectors

Use

these

selectors

to

set

the

load

capacitance

and

load

resistance

to

levels

that

correspond

to

the

cartridge

which

is

being

used.

The

left-hand

knob

is

for

load

capacitance

settings

(100/200/

300/400

pF)

and

the

right-hand

knob

is

for

load

resistance

settings

{(0.1/10/50/100

k-ohms).

Usually

with

moving

magnet

cartridges,

the

reproduction

characteristics

undergo

great

change

when

the

load

capacitance

and

load

resistance

are

varied.

An

illustration

of

this

is

given

in

the

figure

below.

It

shows

the

charac-

teristics

displayed

when

the

load

capacitance

and

load

resistance

are

varied

when

Hitachi's

MT-202MKIL

cartridge

is

used.

By

selecting

the

load

of

the

cartridge,

the

opti-

mum

values

can

be

chosen

in

line

with

the

characteristics

of

the

cartridge

employing

load

capacitance

and

load

resistance.

When

both

the

load

capacitance

and

load

resistance

of

the

cartridge

being

used

are

specified,

set

the

selec-

tors

to

positions

which

correspond

approxi-

mately

to

these

values.

If

it

is

not

clear

exactly

what

these

values

are,

take

100

pF

and

50

k-

ohms

as

the

reference.

Other

combinations

may

also

be

tried

out

if

they

yield

a

sound

quality

which

meets

the

individual

preference

of

the

listener.

The

0.1

k-ohm

position

for

load

resist-

ance

is

for

high-output

moving

coil

cartridges

(those

which

do

not

require

a

booster

trans-

former).

Do

not

set

the

selector

to

this

position

for

moving

magnet

cartridges.

Response

(dB)

+

-202MKIL

Load

capacitance:

100

pF

position

Cartridge

u:

Ik

2k

Sk

Sk

~~

0k

SCO

Frequency

(Hz)

Response

(dB)

Cartridge

used:

2

Load

resistance

50

k-ohms

position

Ik

2k

5k

10k

20k

40k

Frequency

(Hz)

@)

Volume

control

(LEVEL

ATTENUATOR)

Use

this

to

adjust

the

sound

volume.

It is

con-

figured

as

a

32-contact

attenuator,

and

the

‘0’

position

indicates

the

maximum

output

power.

Attenuation

can

be

provided

in

1

dB

steps

between

O

and

10dB,

in

2dB

steps

between

10

and

22dB,

in

3dB

steps

between

22

and

46

dB,

and

in

4dB

steps

between

46

and

70d8.

The

attenuator

system

guarantees

accurate

sound

volume

adjustments.

@

MUTING

switch

This

switch

is

set

to

ON

when

depressed,

and

an

attenuation

of

20dB

is

provided.

Use

this

switch

when

lowering

the

sound

volume

tempo-

rarily

or

when

finely

adjusting

the

level

to

listen

to

the

sound

at

a

low

volume.

Note:

High-output

signals

will

be

applied

to

the

speakers

when

the

MUTING

switch

is

set

to

OFF,

and

they

may

be

damaged.

Therefore,

always

check

the

position

of

the

volume

control,

or

set

the

control

to

its

minimum

position

(%)

if

you

are

not

sure

of

the

strength

of

the

sound,

before

setting

the

MUTING

switch

to

OFF.

(9

FUNCTION

switch

This

selects

the

program

source.

PHONO-1

...

For

hearing

a

record

on

the

turntable

connected

to

the

PHONO

1

input

terminals

1%.

PHONO-2

...

For

hearing

a

record

on

the

turntable

connected

to

the

PHONO

2

input

terminals

18.

TUNER

....

For

listening

to

a

broadcast

on

a

tuner

connected

to

the

TUNER

input

terminals

79.

AUX

......

For

listening

to

a

program

source

On

a

component

con-

nected

to

the

AUX

input

ter-

minals

2.

4)

TAPE

switch

(See

page

5

for

further

details)

Select

the

switch

positions

as

outlined

below

when

playing

back

a

tape,

when

monitoring

the

recording

state

during

tape

recording,

and

when

dubbing

tapes.

SOURCE

...

For

recording

a

sound

source

selected

by

the

FUNCTION

switch.

TAPE

1.

....

For

monitoring

the

playback

or

recording

of

a

tape

in

tape

deck

1

which

is

connected

to

the

TAPE

1

terminals.

TAPE

2

....

For

monitoring

the

playback

or

recording

of

a

tape

in

tape

deck

2

which

is

connected

to

the

TAPE

2

terminals.

The

following

two

positions

are

used

for

tape

dubbing.

COPY

12...

For

playing

back

a

tape

in

tape

deck

1

which

is

connected

to

the

TAPE

1

terminals

and

re-

cording

the

contents

of

that

tape

onto

a

tape

in

tape

deck

2

which

is

connected

to

the

TAPE

2

terminals

(this

pro-

cess

is

called

dubbing).

At

position

1

the

reproduced

sound

of

the

tape

in

tape

deck

1

can

be

heard,

and

at

position

2

it

is

possible

to

monitor

the

recording

state

of

the

tape

in

tape

deck

2.

COPY

2

D1...

For

playing

back

a

tape

in

tape

deck

2

which

is

connected

to

the

TAPE

2

terminals

and

re-

cording

the

contents

of

that

tape

onto

a

tape

in

tape

deck

1

which

is

connected

to

the

TAPE

1

terminals

(this

process

is

called

dubbing).

At

position

2

the

reproduced

sound

of

the

tape

in

tape

deck

2

can

be

heard,

and

at

position

1

it

is

possible

to

monitor

the

recording

state

of

the

tape

in

tape

deck

1.

42

TREBLE

control

Operate

this

control

after

setting

the

TONE

switch

44

to

ON.

Turning

this

control

to

the

right

from

"0

position

increases

the

treble

and

conversely,

turning

it

to

the

left

decreases

the

treble.

The

treble

can

be

adjusted

+10

dB

at

10

kHz

when

the

TURNOVER

switch

(TREBLE)

4

is

set

t0

3

kHz,

and

£10

dB

at

20

kHz

when

the

same

switch

is

set

to

the

6

kHz

position.

(3

TURNOVER

switches

(BASS,

TREBLE)

Use

these

switches

to

compensate

for

the

acous-

tics

of

the

listening

room

or

the

characteristics

of

the

cartridge.

The

bass

turnover

frequencies

are

150

Hz

and

300

Hz,

while

the

treble

turn-

over

frequencies

are

3

kHz

and

6

kHz.

The

con-

trol

range

is

shown

in

the

following

figure.

aCe.

ay

ot

H

ip

aueaee!

Ah

-

aC

i

ane

wen

A

\

or

Bass

and

Treble

controls

in

center

position

\

Frequency

response

{dB]

Frequency

[Hz]

(4

TONE

switch

Set

this

switch

to

ON

when

you

want

to

con-

trol

the

tone

characteristics,

and

then

proceed

with

the

bass

and

treble

controls.

Setting

this

switch

to

the

DEFEAT

position

yields

a

flat

frequency

response

irrespective

of

the

BASS

@

and

TREBLE

42

controls.

(5)

BASS

control

Operate

this

control

after

setting

the

TONE

switch

4

to

ON.

Turning

the

BASS

contro!

to

the

right

increases

the

bass,

and

turning

it

to

the

left

decreases

the

bass.

When

the

TURN-

OVER

switch

(BASS)

@

is

set

to

300

Hz,

you

can

adjust

the

bass

+10

dB

at

100

Hz

and

when

it

is

set

to

150

Hz,

you

can

adjust

the

bass

+10

dB

at

50

Hz.

LISTING

OF

OPERATIONS

Objective

Connections

FUNCTION

TAPE

switch

()

selector

(0

position

position

Sound

heard

through

speakers/

headphones

TUNER

SOURCE

Reception

of

broad-

casts

Tuner-~

TUNER

terminals

Broadcast

Turntable

>

PHONO

1

or

PHONO

2

termi-

nals

Record

play

Record

Tape

deck

for

playback

>

TAPE

1

terminals

a

do

Tape

playback

Playback

sound

from

tape

deck

1

¢

Tape

deck

1

de-

notes

that

tape

deck

connected

to

the

TAPE

1

SOURCE

terminals

on

the

:

|

Any

position

TAPE

\

rear

panel.

TAPE

2

g

Playback

sound

from

tape

deck

2

SOURCE

Sound

of

source

selected

by

FUNCTION

switch

TAPE

Sound

recorded

on

tape

deck

1

can

be

monitored.

Tape

deck

for

playback

>

TAPE

2

terminals

Recording

(broad-

Tape

deck

for

re-

casts,

records)

cording~™

TAPE

¢

The

recording

level

1

and/or

TAPE

2

is

adjusted

with

the

terminals

tape

deck’s

record-

ing

level

controls.

a)

Tape

dubbing

(1D

2)

(Recording

a

broadcast)

I

(Recording

re-

cords)

PHONO

-1

TAPE2

|

Sound

recorded

on

tape

deck

2

can

be

monitored.

rN

Qo

é

n

Any

positio

apis

Playback

sound

1

ra

S

<

from

tape

deck

1

Sound

recorded

Set

to

recording

sound

source

Tape

deck

for

playback

>

TAPE

1

terminals

Tape

deck

for

recording

>

TAPE

2

terminals

on

tape

deck

2

can

be

monitored.

Tape

deck

for

playback

->

TAPE

2

terminals

Tape

deck

for

recording—>

TAPE

1

terminals

paler

Playback

sound

an!

of

tape

deck

2

sob

Sound

recorded

a

zy

|

on

tape

deck

1

12

.

can

be

monitored.

Playback

sound

of

tape

deck

1

¢

The

recording

sound

can

be

monitored

when

the

TAPE

switch

is

set

to

TAPE

2.

Tape

deck

for

playback—>

TAPE

1

terminals

Tape

deck

for

recording

>

TAPE

2

terminals

Recording

of

a

broadcast

or

records

during

tape

play-

back

Tape

deck

for

playback

—>

TAPE

2

terminals

Tape

deck

for

recording->

TAPE

1

terminals

TAPE

2 |

Playback

sound

of

tape

deck

2

¢

The

recording

sound

can

be

monitored

when

the

TAPE

switch

is

set

to

TAPE

1.

The

programs

you

record

may

be

used

for

your

own

personal

entertainment

but

copyright

laws

prohibit

use

without

permission

for

personal

gain.

E-5

WHAT

TO

DO

IF?

There

can

be

a

variety

of

problems

due

to

the

mis-handling

of

the

control

amplifier.

When

a

problem

occurs,

please

check

the

table

below

which

describes

possible

problems

occurring

in

your

con-

trol

amplifier.

Since

the

contro!

amplifier

is

completely

checked

and

adjusted

before

shipping,

there

are

no

user

serviceable

and

adjustable

parts

inside.

But

if

the

control

amplifier

is

not

operating

correctly

and

you

are

unable

to

restore

nor-

mal

operation

by

following

the

detailed

procedure

in

the

table

below,

do

not

remove

the

back

cover

of

the

set

or

attempt

any

further

adjustments.

Unplug

the

sét

and

contact

your

dealer

or

nearest

Hitachi

service

station.

SYMPTOM

a

REMEDY

Power

indicator

does

not

come

Line

plug

is

loose.

1.

Plug

the

AC

plug

into

AC

outlet.

on

and

the

sound

is

not

heard

Fuse

blown.

2.

Replace

the

fuse.

although

the

power

switch

is

set

to

ON.

Power

indicator

comes

on

but

the

sound

is

not

heard.

1.

The

speaker

cords

are

loose.

3

2.

The

tape

switch

is

set

to

TAPE-1

or

TAPE-2.

The

speaker

cord

of

one

channel

is

loose.

2.

BALANCE

control

is

turned

fully

clockwise

or

counterclock-

wise.

Sound

separation

is

not

distinct

Polarities

of

the

speaker

connec-

Correct

the

polarities

on

either

the

and

bass

is

poor.

tions

are

not

aligned

properly.

"speakers,

The

sound

of

both

channels

or

Faulty

connection

of

the

output

Connect

the

output

cords

of

the

turn-

one

channel

is

not

heard.

cords

of

the

turntable.

table

to

the

control

amplifier

securely.

Hum

and

buzz.

.

Faulty

connection

of

the

output

1.

Connect

the

output

cords

of

the

turn-

cords

of

turntable.

table

to

the

control

amplifier

securely.

2.

Pin

jack

connection

is

loose.

2.

Secure

the

pin-plug

to

the

pin-jack.

3.

Ground

wire

is

loose.

3.

Connect

the

ground

wire

of

the

turn-

4.

There

is

a

line

cord

near

the

out-

table

to

GND

terminals

of

the

control

put

cords

of

turntable.

amplifier.

4.

Separate

the

line

cord

from

the

output

cords

of

the

turntable.

Connect

the

speaker

cords

to

the

speaker

terminals.

2.

Set

the

tape

switch

to

SOURCE.

1.

ie

Only

one

channel

works.

Connect

the

speaker

cord

to

the

speaker

terminals.

2.

Set

the

BALANCE

control

to

the

mid-

way

position.

NORMAL

PLAYING

Increasing

the

volume

causes

howl.

1.

Sound

of

the

speakers

is

making

the

turntable

vibrate.

1.

Move

either

the

speakers

or

turntable.

Do

not

increase

the

BASS

sound

level

excessively.

PLAYING

RECORDS

Output

tone

is

mixed

with

noise

and

treble

is

not

clear.

1.

Stylus

is

worn

out.

2.

Record

is

worn

out.

3.

Dust

is

adhering

to

stylus.

4.

Stylus

is

improperly

mounted.

5.

Tracking

force

is

not

correct.

6.

The

TREBLE

sound

is

too

high.

1.

Static.

2.

Noise

caused

by

other

electric

appliances.

Correct

the

conditions

described

in

1-6.

Continuous

noise

in

AM.

Set

up

a

good

and

high

outdoor

antenna

and

ground

it

perfectly.

Only

when

tuning

AM

broad-

1.

casts,

hum

noise

is

heard.

Generally

caused

by

high

voltage

By

reversing

the

polarity

of

AC

plug,

lines

or

other

electric

appliances.

the

hum

is

reduced,

But

it

is

very

diffi-

cult

to

remove

this

noise

completely.

Continuous

or

intermittent

noise.

1.

Ignition

noise

from

automobile

engines.

Set

up

an

outdoor

FM

antenna

in-

stead

of

using

attached

FM

feeder

antenna.

The

sound

of

FM

program

con-

tains

noise

like

zzz.

More

noise

is

included

in

FM

stereo

recep-

tion

than

FM

mono.

1.

The

signal

input

of

antenna

ter-

minals

is

too

weak

to

receive

FM

stereo

broadcasts.

Set

up

an

outdoor

FM

antenna.

LISTENING

TO

BROADCASTS

Operation

procedure

for

power

switches

The

HCA-7500

incorporates

a

muting

circuit

to

safeguard

against

shock

noise.

Nevertheless,

you

can

still

damage

your

speakers

if

you

operate

the

amplifiers

carelessly,

so

be

sure

to

follow

the

procedure

outlined

below.

Switching

the

power

on

Switching

the

power

off

Control

amplifier’s

volume

control

Minimum

|

Control

amplifier’s

volume

control

Minimum

Power

amplifier’s

speaker

switch

OFF

|

Power

amplifier’s

speaker

switch

OFF

Control

amplifier’s

power

switch

ON

|

Power

amplifier’s

power

switch

OFF

Power

amplifier’s

power

switch

ON

|

Contro!

amplifier’s

power

switch

OFF

Power

amplifier’s

speaker

switch

ON

SPECIFICATIONS

Preamplifier

Input

sensitivity

({mpedance)

Overload

level

(1

kHz,

T.H.D.

0.01%)

Output

level

({mpedance)

Max.

output

level

Frequency

characteristics

Signal-to-noise

ratio

(WHF,

short-circuited,

A

network)

Residual

hum

and

noise

Harmonic

distortion

(20

Hz

—

20

kHz)

Tone

control

Filter

Muting

Power

supply,

others

Power

supply

Power

consumption

Dimensions

Weight

PHONO

1,2:

2

mV

(0.1

k-ohm,

10

k-ohms,

50

k-ohms,

100

k-ohms/

100

pF,

200

pF,

300

pF,

400

pF)

TUNER/AUX:

100

mV

(50

k-ohms)}

TAPE

1,

2:

100

mV

(50

k-ohms)

PHONO

1,

2:

350

mV

TUNER/AUX:

More

than

10

V

TAPE

1,2:

More

than

10

V

PRE

OUT:

1

V

(600

ohms)

TAPE

REC

OUT:

100

mV

(600

ohms)

PRE

OUT:

More

than

7

V

PHONO

1,

2

(RIAA):

20

—

20,000

Hz

(+0.2

dB)

TUNER/AUX:

5

—

100,000

Hz

(*9

dB)

PHONO

1,2:

87

dB

(input

level

2

mV)

TUNER/AUX:

100

dB

(input

level

100

mV)

TAPE

1,2:

100

dB

(input

level

100

mV)

PRE

OUT:

8yuV

PHONO

1,

2:

Less

than

0.005%

at

REC

OUT

level

1

V

Less

than

0.01%

at

REC

OUT

level

5

V

TUNER/AUX:

Less

than

0.005%

at

PRE

OUT

level

1

V

Less

than

0.01%

at

PRE

OUT

level

5

V

BASS:

£10

dB

(50

Hz,

100

Hz

turnover

at

150

Hz,

300

Hz}

TREBLE:

+10

dB

(10

kHz,

20

kHz

turnover

at

3

KHz,

6

kHz)

LOW:

15

Hz

(12

dB/oct.)

HIGH:

8

kHz

(6

dB/oct.)

-20

dB

AC

120

V,

~220

~—

240

V,

50/60

Hz

12

W

(AC

120

V,

220

V

—

240

V)

480

(W)

x

166

(H)

x

348

(D)

mm

78kg

17.2

Ibs.

Specifications

and

designs

may

be

changed

without

notice

for

improvement.

Phono

Input

vs.

Distortion

Rate

Characteristics

Frequency

Characteristics

Plattenspielereingang

im

Vergleich

zum

Gesamtklirrfaktor

Frequenzgang

Courbes

caractéristiques

de

l’entrée

phono

sur

le

taux

de

distorsion

Réponse

en

fréquence

(Dem

L

Tt

14

Input

:

PHONO

|

terminal

S

Input

-

TUNER

terminal

op

+t

ath

Oitsaee

BER

terainal

am

&

22

Output

:

OUTPUT

terminal

-

Fe?

Sere

ttt

alae

SS

on

O

dB

:

0.775V

ms

is

Toa

mannii

Eingang

:

Plattenspielerbuchse

|

S

:

—-

-4

4

HH

}

FT

PHONG

ed

§

2

09

Eingang

:

TUNER-Buchse

@

2a

~tLow

ter

ett

Pet

tot

i

A

568

Ausgang

:

Ausgangsbuchse

Fes

ON

fp}

ppt

et

Ay

+

Ausgang

:

Aufnahmebuchse

(REC)

Zs

&

902

eet

gsbuchs

3

S

3

Tieten

iter:

=

High

filter

ONE

the

ole

Ns

Hohen

filter

ON-+

:

a3

ae

seer

nfl

Entrée

:

Bornes

PHONO

!

°

2

E

0.04

O

dB:

0,

775V

2

“4

3

‘6

passe-bas

aa

tala

Filtre

passe-haut

ON

TY

TTT

Co

a

em

-—1nk

iH

1

ec

cuc

ON

Th

t

Sortie

:

Bornes

REC

EE

7

0.00

Entrée

:

Bornes

TUNER

Poa

oor

|

mais

At

28

Sortie

:

Bornes

OUTPUT

|

ee

LL

=ge

PAGE

Hay

ali

O

dB:

0,775V

-is

Jot

i

ET

i

HE

wo

i

f

i

PSG

°°

7s

id

20-50

100

200

500

10002000

5000

1

2

5

10

2

SO

Ik

kG

5k

10k

“a

50k

100k

F

Hz)

F

Hz)

Fré

H

input

voltage(mV

)

Eingangsspannung(mV

)

Tension

entrée(mv

}

requencytH2z}

Frequenz(Hz)

Fréquence(Hz)

Equalizer

Allowable

Input

Characteristic

dite

it

EIN

ee

ac

I

Bs

Heir

vison

oll

oat

lees

kar

ONE

Zulassiger

Eingangspegel

des

Entzerrers

|

Audio

Ose

:

A

onfrequenzgenerator

:

Mode

P-721A

|

Ree

a

basse

fréquence

:

Modéle

VP-721A

|

AC

Voltmeter:

MODEL

3400A

|

Wechselstrom-Voitmeter

:

Modei!

3400A_

|

Pes

-

a

.

;

oltmétre

CA:

Modéle

3400A

Courbe

caractéristique

d’entrée

permise

du

compensateur

in

ean

aha

con

i

At

RPL

tC

Sree

Secs

ae

ak

:

—

ee

hy

Input

:

PHONO

I

terminal

5000

(level

2mV)

-

Output

-

REC

terminal

=

200'—}-+-}

Distortion

rate

:

0.01%

constant

age

ee

o

~

Eingang

:

Plattenspielerbuchse

|

£

2

500

(PHONO

|)

(Pegel

2mV)

faz

Ausgang

:

Aufnahmebuchse

(REC)

~

SS

204

.

is

<c

Gesamtklirrfaktor

:

0,01%

konstant

Bit

=

10

mn

a

ann

ae

o

=

Entrée

:

Bornes

PHONO

!

24°

sak

tai

(aiveats

Dawe

3

2

@

i

RIAA

Deviation

Sortie

-

Bornes

REC

e364

Dove

piavinr

du

déviation

RIAA

F

:

%

constant

|

I

eristtque

du

viation

Taux

de

distorsion

:

0,01%

Wea~ag

BOI

BOO

UBT

ZUR

5K

100K

:

Frequency(Hz)

Frequenz(Hz)

Fréquence(Hz}

Input

>

PHONO

|

terminal

<3

(level

2mV)

n@n

Output

vs.

Distortion

Rate

Characteristics

Output

:

REC

terminal

SS

403

ato

:

Ausgangsleistung

im

on

zum

lah

apne

etuicuecdicneiciee

Eingang

;

Plattenspielerbuchse

|

E

2

g

$0.2

;

roe

=

tt

HT

|

Courbes

caractéristiques

de

a

puissance

ee

sortie

su

(PHONO

|)

(Pegel

2mV)

©

Sm

0

fet

—

_LUTT:

Input

:

TUNER

terminal

&

2

Ausgang

:

Aufnahmebuchse

a2

$2.

Lie

LT

Ts

Output

+

OUTPUT

terminal

XS

zg

ol

(REC)

Se

a

319-20

501000000

2B

10k

OK

50K

100K

Eingang

:

TUNER-Buchse

6

Entrée

:

Bornes

PHONO

|

cra

Frequency(H2}

Frequenz(Hz)

Fréquence(Hz)

Ausgang

:

Ausgangsbuchse

BY8

(niveau

2mV)

(OUTPUT

)

g.5

Sortie

:

Bornes

REC

fe

Entrée

:

Bornes

TUNER

es

5

Sortie

:

Bornes

OUTPUT

Efc

aon.

22%

:

a

“Pett

—

©

5

0.002

t

SEs

HT

|

ele

So

©

2

4

og

iLL

Liiiul

bri

i

Foot

0.02

0050702

05

1

2

5

W

20

50

100

Power

output(V)

Ausgangsieistung(V}

Purssance

de

sortie(v}

7

~-Measuring

Equipment

-—--—

—\

;~~Mefgerate-

=e

¢-7Equipement

de:

mesures

Hh

Audio

Osc.:

MODEL

4494A

i!

Tonfrequenzgenerator

>

Modell

44944

|

\

Générateur

a

basse

fréquence

:

Modéie

4494A

:

;

AC

Voltmeter:

MODEL

34004

Wechselstrom-Voltmeter

:

Mode!l

3400A

°

|

Voltmétre

CA

:

Modéle

3400A

:

|

Dtstortion

Meter:

MODEL

43334

;

|

Klirrfaktormesser

:

Model!

4333A

:

|

Appareil

de

mesure

:

Modéle

4333A

i

Rae

Salis

ies

a

ae

Gis

gcse

atc

at

ee

MVE

er

a,

acca

fab

anioa

dae

a

4764411

Printed

in

Japan’

H)

~HCA-7500

eer

®D

STERECACONTROL

AMPLIFIER

HCA-7500

LEVEL

ATTENUATOR

‘ONE

CONTROL

TAPE

FUNCTION

TURNOVER

TONE

TURNOVER

,

20

9220

wy

*

BASS

TREBLE

SOURCE

PHONG

——

5

“

Ms

sa

TAPE-1

300rE

oOEreat

;

™N

ai

ieeememmmene

|

r-FILTER

Low

HIGH

i

leles

poe

:

(asvoct)

(8@B/oct

stEREO

NORMAL

MONO

CARTRIDGE

LOAD

POWER

1Brtz

Orr

c=

REVERSE

Ler

H

ex

Besse

guna

;

Sa

ee

vet

: :

«40

.

i

c

’

¢

she

STEREO

POWER

AMPLIFIER

eee

power

plug

after

you

have

finshed

STEREO-ENDVERSTARKER

Always

use

a

household

AC

outlet

as

the

AMPLIFICATEUR

DE

PUISSANCE

STEREO

Dewey

A

Mpulley's

POMEL

SONGS:

Als

Stromquelle

des

Endverstarkers

stets

eine

Netzsteckdose

ver

wenden.

Nachdem

alle

Anschllsse

vorgenommen

wurden.

den

HCA-7500

ans

Netzanschliefen.

Ne

raccorder

la

prise

d’alimentation

du

HCA-7500

que

lorsque

‘

Utiliser

toujours

une

prise

ran

vous

aurez

achevé

toutes

les

connexions.

)

p

de

courant

CA

domestique

comme

source

d’alimentation

de

Vamplificateur

de

puissance.

AM/FM

STEREO

TUNER

UKW/AM

STEREO-

TUNER

TUNER

STEREO

AM/FM

—

AC

outlets

:

The

HCA-7500

has

two

SWITCHED

TOTAL

100

W

MAX

outlets

and

two

UNSWITCHED

TOTAL

200

W

MAX

outlets.

(for

U.S.A.

&

CANADA

sets

only.}

at

;

:

Wechselstromausgange

:

Der

HCA-7500

besitzt

zwei

geschaitete(

SWIT-

CHED)

Ausgange

von

insgesamt

100

W

maximal

und

zwei

ungeschaltete

(UNSWITCHED)

Ausgange

von

insgesamt

200

W

maximal.

(Nur

bei

Gerdten

flr

U.S.A.

und

KANADA)

Sorties

CA:

Le

HCA-7500

posséde

2

sorties

commutables

totales

de

100

Watts

maximum

et

2

sorties

non-commutables

de

200

Watts

maximum

a

pour

les

appareiis

vendus

seulement

aux

U.S.A.

et

au

Canada).

Jd

VOLTAGE

SELECTOR

STEREO

CONTROL

AMPLIFIER

I.

ea

cake

|

a

-240V~

MODEL

Ne.

HCA

—7500

'

3

ACi@0

VOLTS

BOHz

:

“

1@

WATTS

Min

ac

A

BOVES

DE

CHOC

ELECTRIGEE,

NE

PAS

HItACHy,

Lite.

Tokyo

Jaman

RETINER

LES

VIS.

AUCUNE]

[TECH

W'EST

REMPLACABLE

PAR

LA

CLIENTELE

MAGE

IN-SADAN

ELLE-MEME.

CONSULTER

U1

E

PE)

BONNE

QUALIFIEE

POUR

LES

REPARATIONS.

Any

hum

caused

when

the

power

amplifier

is

installed

near

this

model

\

can

be

reduced

by

unplugging

the

power

plug

of

the

control

amplifier

Earth

wire

and/or

power

amplifier,

turning

it

upside

down

and

plugging

it

in

again.

Erdung

Falls

dieses

Gerat

in

der

Nahe

des

Leistungsverstarkers

aufgestellt

Fil

de

prise

wird

und

Brummgerausch

zu

horen

ist,

den

Netzstecker

von

Steuerver-

p

starker

und/oder

Leistungsverstarker

herausziehen

und

in

umgedrehter

GaN

tereS

Steliung

wieder

einstecken.

Dadurch

wird

im

aligemeinen

das

Brummen

reduziert.

On

peut

réduire

un

ronfiement

quelconque

apparaissant

quand

lampiifi-

cateur

de

puissance

est

placé

prés

de

ce

modéle,

en

débranchant

la

prise

d’alimentation

secteur

de

|'amplificateur

de

commande

et/ou

de

\‘amplificateur

de

puissance,

puis

en

le

retournanit

complétement

une

fois

et

en

le

rebranchant.

)

(TAPE

|

and

2

PLAY

terminals

are

provided

with

shorting

pin

plugs.

}

Remove

all

plugs

when

using

terminals.

When

the

TAPE-1

or

TAPE

-2

PLAY

terminals

are

not

being

used.

return

the

shorting

pin

plugs

to

thew

original

posittons.

Die

Ausgangsbuchsen

flr

Tonbandgerate

TAPE

|

und

2

sind

mt

Kurz-

schlugsteckern

versehen.

Bci

Verwendung

aller

Anschiu@buchsen

alle

Kurzschlustecker

entfernen.

Wenn

die

Anschlu@buchsen

“TAPE-

|"

und

“TAPE-2

PLAY”

micht

benutzt

werden,

die

Kurzschlu@stecker

wieder

in

die

Buchsen

siecken.

TAPE

DECK

|

Les

Bornes

TAPE-1

et

TAPE-2

PLAY

sont

équipées

de

fiches

de

TURNTABLE

TONBANDGERAT

mise

en

court-circuit.

Retirer

toutes

les

fiches

quand

vous

utilisez

ces

MAGNE

TOPHONE

bornes.

Lorsque

les

bornes

TAPE-|

ou

TAPE-2

PLAY

ne

sont

pas

PLATTENSPIELER

utilisées,

remettre

les

fiches

a

broches

de

court-circuit

sur

jeurs posi-

TOURNE-DISQUE

\_

tions

initiales.

a.

Mo3e

Volume

control

PTD

Be

ee

Re

ent

ee

a

ee

7

7

High

filter

sw.

pA

ii

a

Balance

Mode

sw

:

Output

terminal

7

/

Function

sw

Low

filter

sw.

TUNER

Tone

amp

PHONO1

Filter

amp.

Muting

Power

sw

ACI20V

60Hz

~220V

—240V

soHz

1

AG

a

©

A:

UNSWITCHED

SWITCHED

TOTAL200W

TOTALIOOW

+32v

—32v

DC

stabilized

power

source

ee

U.S.A.

a

Canada

set

only

©

Hitachi,

Ltd.

Tokyo

Japan

Head

Office

:

5-1,

1-chome,

Marunouchi,

Chiyoda-ku,

Tokyo,

Japan

Tel.

>

Tokyo(212)1111(80

lines)

Cable

Address

:

“HITACHY”

TOKYO

O37

A

Table of contents

Popular Amplifier manuals by other brands

auna PRO

auna PRO Amp EQ BT instructions

Stealth Acoustics

Stealth Acoustics SA 2400 MKII user guide

TMC

TMC Pala-10K Technical manual & replacement parts list

Behringer

Behringer MicroPHONO PP400 user guide

SoundToys

SoundToys little radiator 1566A user guide

Crate

Crate LIMO TX50D Driver guide

Richter

Richter medusa Operator's manual

Vantage Hearth

Vantage Hearth AX-07S installation manual

SPL

SPL GainStation 8 Mk2 manual

Philips

Philips TDA8946J Specification sheet

Opera Audio

Opera Audio A120LINEAR user guide

Carson

Carson SC-1002 Installation and operating instructions

PRS Guitars

PRS Guitars Mark Tremonti MT15 user manual

Custom Audio Electronics

Custom Audio Electronics Traynor YCV40 owner's manual

NAD

NAD 116 owner's manual

Creek Audio

Creek Audio OBH-12 operating instructions

Butler

Butler TDB 3150 Owner's Information

Vitus Audio

Vitus Audio RS-100 owner's manual