Sony TC-765 Guide de configuration

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SON

Yo

STEREO

TAPE

DECK

_TC-765/766-2°

Owner’s

instruction

manual

Page

2

Before

operating

your

new

Sony

stereo

tape

deck,

please

read

this

manual

completely

to

become

familiar

with

all

its

features

and

capabilities.

Keep

this

manual

handy

for

future

reference.

Bedienungsanleitung

Seite

30

Bevor

Sie

Ihren

neuen

Sony

Stereo-Tape-Deck

in

Betrieb

nehmen,

lesen

Sie

bitte

diese

Bedienungsanleitung

volistandig

durch,

damit

Sie

mit

seinen

besonderen

Einrichtungen

und

Méglichkeiten

ver-

traut

werden.

;

Bewahren

Sie

diese

Anleitung

gut

auf,

spater

jederzeit

darin

nach-

schlagen

zu

kénnen.

©1977

by

Sony

Corporation

This

instruction

manual

covers

TC-765

(4-track

;19

cm/s,

7

1/2

ips)

-and

TC-766-2

(2-track

;

38

cm/s,

15

ips).

Where

difference

occurs

between

two

models,

it

is

clearly

de-

scribed

in

the

text.

:

FEATURES

@

Three

heads

and

three

motors

(TC-765)

@Four

heads

and

three

motors

(TC-766-2)

@Closed-loop/dual

capstan

tape

drive

@An

AC

servo-controlled

capstan

drive

motor

@

High-performance

F

&

F

(Ferrite

and

Ferrite)

heads

@

Separate

3-way

bias

and

equalization

selectors

@Logic-controlled

transport

function

buttons

@First

stage

of

the

amplifier

and

the

playback

head

are

directly

coupled.

WARNING

To

prevent

fire

or

shock

hazard,

do

not

expose

the

unit

to

rain

or

moisture.

To

avoid

electrical

shock,

do

not

open

the

cabinet.

Refer

servicing

to

qualified

personne!

only.

TABLE

OF

CONTENTS

Precautions

32

ac-d.0

Sas

Be

Saal

eS

ea

abodes

3

Operating

voltage...

1.

ens

3

Function

of

controls...

0.0...

ee

ee

es

4

Connections

.......0....

002.000

ee

eee

ra

hate

Be

OS

6

Jape:

threading...

.c2%s

soe

$1

etd,

Ga

et

he

AR

Ee

oe

7

Recording.........

a

AT

waka

dc

Sag

aan

a

aires

GN

a

ar

anaes

a>

He

7

Playback

25)

ee.05

°S.3atete,

Sle

Wie

eRie

eh

SN

eae

ae

eas

10

Erasing

is

e.g

5

fee

celeste

be

edo

weg

es

a

eaten

10

Timer-activated

recording

and

playback...............

10

Mic

and

line

mixing...

..........0000

ee

eee

"pagal

FI

Sound-on-Sound

recording

....

0...

00.000

cece

evens

11

ECho:-recording:

si

siao

3

ese

a

seh

oa

ivi

el

oa

Se

5

~.12

EGItin

gis

fn

Pets

toad

toe

ae

ref

teed,

Sete

y

eel

oes

we

as

12

Maintenance

......

0.0...

000

ee

ee

ee

ee

13

Specifications:

4.2.0

chsh

so

okls

kc

aa

be

wales

Bae

wwe

lee

Bs

14

Trouble:

checksis

ss.

s/s

ee

ee

hc

uieciand

H

RRA

hd

ee

ae

eae

15

FOR

THE

CUSTOMERS

IN

THE

UNITED

KINGDOM

—

WARNING

This

apparatus

must

be

earthed

at

the

terminals

in

your

3-pin

plug

as

follows:

IMPORTANT

The

wires

in

this

mains

lead

are

coloured

in

accordance

with

the

following

code:

Green-and-yellow:

Earth

(safety

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

with

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

termi-

nal

which

is

marked

with

the

letter

N

or

coloured

black.

The

wire

which

is

coloured

brown

must

be

connected

to

the

ter-

minal

which

is

marked

with

the

letter

L

or

coloured

red.

PRECAUTIONS

On

safety

;

@

Before

operating,

be

sure

the

operating

voltage

of

your

unit

is

identical

with

that

of

your

local

power

supply.

@Should

any

liquid

or

solid

object

fall

into

the

cabinet,

unplug

the

unit

and

have

it

checked

by

qualified

personnel

before

operating

it

any

further.

@

Unplug

the

unit

from

the

wall

outlet

if

it

is

not

to

be

used

for

an

extended

period

of

time.

To

disconnect

the

cord,

pull

it

out

by

the

plug.

Never

pull

the

cord

itself.

On

installation

@

Good

air

circulation

is

essential

to

prevent

internal

heat

build-up

in

the

unit.

Place

the

unit

in

a

location

with

adequate

air

circula-

tion.

@

Do

not

install

the

unit

in

a

location

near

heat

sources

such

as

radiators

or

air

ducts,

or

in

a

place

subject

to

direct

sunlight,

ex-

cessive

dust

or

mechanical

vibration.

;

On

head

cleaning

The

best

performance

of

your

unit

depends

on

the

periodic

clean-

ing

of

the

heads

and

all

surfaces

over

which

the

tape

travels.

Dirty

heads

and

tape

path

cause:

@Loss

of

high

frequency

response

@Loss

of

sound

volume

@

Sound

drop-out,

etc.

Cleaning

should

be

done

every

after

10

hours

of

operation.

For

details,

see

’

Maintenance”

:

Playback

waveform

at

10

kHz

With

a

clean

head

With

a

dirty

head

(The

output

level

fluctuates.)

Frequency

response

at

38

cm/s

(15

ips)

‘2

Saat

eal

as

Ts

With

a

clean

head

to)

~CL

With

a

dirty

head

[PTH

+

a

|

|

zs

3a

5

Tr

Ht

Ty

3

Even

hardly

visible

dust

layer

of

1,54

\

@

deteriorates

frequency

response.

\

=

10

t

roth

i

=

=

_o

-15

}.

4

J

100

1k

10k

Frequency

(Hz)

:

If

you

have

any

question

or

problem

with

your

unit,

please

contact

your

Sony

Service

Station

or

Sony

dealer.

OPERATING

VOLTAGE

Before

connecting

to

the

power

source,

check

that

the

voltage

selector

is

set

to

your

local

power

supply.

lf

itis

not

the

same,

change

the

voltage

selector

setting

as

fol-

lows

:

é

1.

Check

that

the

unit

is

disconnected

from

the

power

supply.

2.

Remove

the

cover

of

the

selector.

Loosen

the

arrow-marked

screw

on

the

cover

but

do

not

remove

it

from

the

cabinet.

Remove

the

other

screw.on

the

cover.

Then

turn

the

cover

around

the

arrow-marked

screw

so

that

you

can

unplug

the

selector.

“ey

3.

Pull

out

the

voltage

selector

plug

and

reinsert

it

so

that

the

top

arrow

mark

of

the

plug

points

to

the

proper

voltage

marking.

4.

After

changing

the

voltage,

reset

the

cover.

@Line

frequency

change

is

not

necessary

since

your

tape

deck

is

furnished

with

an

AC

servo-controiled

motor.

®

110V

220V

>

a>

240V

120V

FUNCTION

OF

contrdty

-

SONY

CLOSED

LOOP

BUAL

CAPSTAN

9:

@

Tension

arms/automatic

shut-off

switches

These

arms

maintain

uniform

tape

tension.

When

all

the

tapes

are

wound

and

these

arms

return

to

the

former

position,

tape

transport

mechanism

will

stop.

@

TIMER

switch

Usually

set

this

switch

to

OFF.

To

make

timer-activated

operation,

set

it

to

ON.

©

TAPE

SPEED

selector

19

cm

(7

1/2

ips):

For

high

quality

recording

9.5

cm

(3

3/4

ips)

:

For

longer

time

recording

38

cm

(15

ips):

For

studio

quality

professional

recording

19

cm

(7

1/2

ips)

:

For

longer

time

recording

Tape

speed

in

playback

should

be

the

same

as

that

in

recording.

@

REEL

SIZE

selector

:

Select

the

optimum

rewind

tension

and

reel

torque

for

the

reel

used:

The

“10”

position

is

for

10

1/2-inch

(27

cm)

reels,

and:

7”

is

for

7-inch

(18

cm)

or

5-inch

(13

cm)

reels.

©

POWER

switch

This

turns

the

power

on

or

off.

The

VU

meters

will

light

up

when

the

unit

is

turned

on.

©

VU

meters

With

MONITOR

switch

set

at

SOURCE,

the

meters

show

the

re-

cording

level

adjusted

by

the

REC

LEVEL

controls,

With

the

MONITOR

switch

set

at

TAPE,

the

meters

show

the

out-

put

level

adjusted

by

the

PB

LEVEL

controls.

0

VU

reading

corre-

sponds

to

0.435

V.

;

@

HEADPHONES

jack

=

Insert

low-impedance

headphones

to

monitor

the

input

and

re-

corded

signals.

@

MIC

jacks

Any

low-impedance

microphone

equipped

with

a

phone

plug

may

be

used.

If

your

microphone

is

equipped

with

a

mini

plug,

a

plug

adaptor

for

converting

to

phone

plug

is

required.

©

Mic

attenuator

switch

[MIC

ATT]

Usually

set

this

switch

at

the

“0”

position.

Mic

attenuator

is

useful

when

recording

a

large

input

signal

on

location

(rock

music,

etc.)

or

recording

with

a

microphone

too

close

to

the

source

without

overloading

the

tape

deck

amplifier.

When

the

needles

of

the

VU

meters

swing

over

the

0

VU

with

the

REC

LEVEL

MIC

controls

turned

down

on

the

scale

around

the

in-

dication

2-3,

first

set

the

MIC

ATT

switch

at

“15".

At

this

posi-

tion,

the

input

level

is

reduced

by

15

dB.

If

the

input

signal

level

is

still

large,

use

the

“30”

position.

At

this

position,

the

level

will

be

reduced

by

30

aB.

@

Tape

counter

and

reset

button

Use

the

counter

for

indexing

tape

contents.

Once

reels

are

thread-

ed,

set

the

counter

to

[0000]

by

pushing

the

reset

button.

The

figures

on

the

counter

change

as

the

tape

passes.

Make

a

note

of

the

figures

and

the

recorded

program

for

later

reference.

@

Function

buttons

@

Recording,

<<

Rewind,

Hi

Stop,

»

Forward

and

»

Fast-forward

tape

motion.

These

buttons

can

be

depressed

at

random

to

change

tape

motion

from

normal

to

fast

wind,

and

vice

versa

(Logic-controlled

transport

function).

[ll

Pause

button

To

momentarily

stop

during

recording

or

playback,

depress

this

button.

To

restart,

depress

it

again.

Also

use

this

button

for

smoother

start

of

recording.

®

Recording

level

controls

[REC

LEVEL-MIC,

LINE]

Adjust

the

recording

level

with

these

controls:

inner

knob

for

R

channel

and

outer

knob

for

L

channel.

Turn

down

the

unused

controls

full

to

“0”.

MIC:

When

recording

from

the

MIC

jacks

LINE

:

When

recording

from

the

REC/PB

and

LINE

IN

jacks

@®

MONITOR

switch

For

tape

playback,

set

the

switch

to

TAPE.

While

recording,

moni-

toring

of

input

sound

is

possible

with

this

switch

set

at

SOURCE,

and

monitoring

of

recorded

sounds

is

possible

with

this

switch

set

at

TAPE.

@®

Playback

level

controls

[PB

LEVEL]

These

controls

adjust

the

playback

signal

level

of

LINE

OUT

and

HEADPHONES

jacks.

Generally,

set

the

controls

at

center

posi-

tion.

For

further

information,

refer

to

page

9.

@®

Recording

mode

switches

[REC

MODE]

For

recording,

push

in

the

switches.

When

these

switches

are

pushed

in,

the

record

button

lamp

puts

on

and

off

repeatedly.

For

playback,

release

these

switches

to

prevent

inadvertent

erasure.

@

TAPE

SELECT

switches

BIAS

:

Select

the

optimum

bias

current

for

the

tape

to

be

used

in

recording

mode.

EQ:

Select

the

correct

equalization

characteristics

for

the

tape

to

be

used

in

recording

mode.

These

two

switches

nave

no

effect

on

playback.

@

2-track/4-track

selector

switch

Usually

set

this

switch

at

left

position

(2-track).

When

playing

back

the

tape

which

has

been

recorded

on

other

4-track

tape

deck,

_

Set

the

switch

at

right

position

(4-track).

If

2-track-recorded

tape

is

played

back

mistakenly

with

this

switch

set

at

right

position

(4-

track),

the

level

will

be

reduced.

On

the

other

hand,

if

4-track-

recorded

tape

is

played

back

with

this

switch

set

at-2-track

posi-

tion,

the

recorded

material

in

the

opposite

direction

will

be

played

back

mixedly.

4-track

Recording

monitor

muting

switch

(REC

MONITOR

MUTE}

(rear)

When

this

switch

is

set

to

ON,

the

line

outputs

are

cut

except

when

the

tape

is

played

back

with

the

MONITOR

switch

set

at

TAPE.

See

the

table

below.

This

switch

makes

the

microphone

recording

free

from

howling

effect

and

is

useful

for

instrumental

practice

whieh

necessitates

repetition

of

recording

and

playback.

MONITOR

switch

SOURCE

TAPE

During

recording

no

sound

no

sound

During

playback

no

sound

yes

Headphone

monitoring

is

free

from

this

switch.

REMOTE

CONTROL

connector

(rear)

Plug

the

Sony

Remote

Control

RM-30

(optional)

in

this

connector.

The

RM-30

features

“record

muting”*

as

well

as

remote

control

operation.

Read

the

RM-30

instruction

manual

before

operating

it

with

the

tape

deck.

*

A

device

which

is

beneficial

to

short-circuit

unwanted

program

sources

such

as

broadcasting

commercials,

thus

allowing

an

inter-

space

between

the

recordings.

INPUT

SELECT

switch

(rear)

When

recording

from

LINE

IN

jacks,

set

this

switch

at

LINE.

When

recording

from

REC/PB

connector,

set

this

switch

at

REC/PB.

CONNECTIONS

@

Turn

off

the

amplifier

before

making

connections.

@lnsert

the

cable

connectors

completely

into

jacks.

Loose

con-

nections

may

cause

hum

and

noise.

,

e@The

red

plug

of

the

supplied

connecting

cord

should

be

con-

nected

to

the

right

channel

and

the

gray

plug

to

the

left

channel.

Amplifier

connection

®

@REC/PBS

Cp

on

Connection

on

front

panel

REC/PB

(DIN)

connector

There

are

two

possibilities

of

the

amplifier

connection,

by

supplied

phono

(RCA)

connecting

cords

and

a

single

5-pin

DIN

connecting

cable.

Note

the

following

points.

@The

phono

cord

connections

are

recommended,

since

it

will

result

in

better

signal-to-noise

ratio.

For

playback

—-—Y.

{For

recording

“For

duplication

from

another

tape

deck

=.

signal

flow

=

e@Connect

the

tape

deck

to

an

AC

outlet

with

the

power

cord:

First

plug

the

cord

into

the

tape

deck

AC

IN

socket,

then

into

a

wall

outlet.

to

recording

outputs

to

tape

inputs

(or

auxiliary

inputs)

wma

tO

wall

outlet

to

line

to

line

:

inputs

outputs

Another

tape

deck

Amplifier

to

record/playback

connector

—_

e@Connection

between

amplifier

DIN

connector

and

phono

jacks

of

the

tape

deck

is

not

recommended,

since

their

input

and

output

sensitivity

and

impedance

are

not

correctly

matched.

@To

directly

connect

both

tape

deck

DIN

connectors,

a

DIN

cable

for

tape

duplication

is

required.

@When

recording

from

the

REC/PB

connector,

set

the

INPUT

—

SELECT

switch

located

in

the

rear

to

REC/PB

position,

andrecord-

ing

level

should

be

adjusted

with

the

REC

LEVEL

LINE

controls.

TAPE

THREADING

RECORDING

Set

the

REEL

SIZE

selector

according

to

the

reels

to

be

used.

Fundamental

steps

Use

the

same

size

reels

for

both

supply

and

take-up.

~

Check

the

INPUT

SELECT

switch:

1.

Secure

the

reels.

When

recording

from

LINE

IN

jacks

—

LINE

When

recording

from

REC/PB

connector

—

REC/PB

O

2.

Pass

the

tape.

3.

Wrap

the

tape

around

the

hub

of

the

right

reel

or

insert

the

end

of

the

tape

into

the

reel

slot.

4.

Rotate

the

reels

a

few

times

by

hand

until

there

is

no

Secx

in

the

tape.

If

there

is

slack,

tape

will

not

move

even

if

the

function

button

is

depressed.

QOQOOOO0O

Koo:

=|

eled

OOOH

oO

@

TIMER

switch

+

OFF

@

POWER

switch

>

Depress

to

ON.

©

Thread

a

tape.

@

Tape

counter

—>

Reset

to

[0000]

@

REEL

SIZE

selector

—

Set

to

the

reel

diameter

to

be

used.

@

TAPE

SPEED

selector

—

As

desired.

inOOO0O

SasoaS

<I

<

TAQ

a

For

the

supplied

27

cm

(10

1/2-inch)

metal

reel,

use

the

supplied

reel

adaptor

RAD-11

(reel

holder

and

spacer)

as

illustrated.

Spacer

Metal

reel

Ci

—~

Reel

holder

“fede

noe

@For

optional

plastic

reel,

neither

reel

holder

nor

spacer

is

re-

quired,

If

the

plastic

reel

has

a

large

center

hole,

use

the

reel

holder

only.

The

spacer

is

unnecessary.

Recording

After

the

fundamental

steps

@

to

@,

continue

with

the

following

steps

@

to

@.

@

TAPE

SELECT

switches

(both

BIAS

and

EQ)

—

Set

according

to

the

tape

used.

@

MONITOR

switch

—

SOURCE

@

PB

LEVEL

controls

—

Set

to

center

click

position.

@

Adjust

the

recording

level

with

respective

MIC

or

LINE

con-

,

trols

while

watching

the

VU

meters.

MIC

controls.

.

.

for

recording

from

MIC

jacks

LINE

controls.

.

.

for

recording

from

LINE

IN

jacks

or

REC/PB

con-

nector.

.

Be

sure

to

turn

the

unused

level

controls

full

counterclockwise.

@

REC

MODE

switches

—

Depress.

@

While

depressing

the

@

button,

depress

the

>

button,

Now

recording

starts.

@

When

recording

completes,

depress

the

Jf

button.

Tape

BIAS/EQ

recommendations

The

following

list

shows

our

recommended

settings,

which

have

been

determined

through

critical

listening

tests

and

electrical

characteristic

measurements

on

commercially

available

tapes.

The

setting

could

be

changed

to

your

preference.

For

Sony

tapes,

be

sure

to

use

the

recommended

settings

to

obtain

the

optimum

tape

characteristics.

NORMAL

SPECIAL

Fe-Cr

BASF

LH,

LHS

|

SCOTCH

#211,

~

SONY

PR

AGFA

PE,

PEM

#212,

#213:

MEMOREX

AMPEX

406,

407.

SONY

SLH

SONY

Ferri-Chrome

MED

|

SCOTCH

#218

|

SCOTCH

CLASSIC

|

SCOTCH

#206,

#207

TDK

AUDUA

waxcch-Up

|

HIGH

SCOTCH

#250

Po

Record

monitoring

As

this

tape

deck

has

separate

record

and

playback

heads,

instan-

taneous

tape-source

comparison

is

possible

with

the

MONITOR

switch.

SOURCE

:

Source

sound

is

heard

TAPE

:

Recorded

sound

is

heard

@ln

microphone

recording,

if

monitoring

through

the

speakers,

howling

effect

may

occur.

Use

of

the

REC

MONITOR

MUTE

switch

avoids

this

howling

effect

and

monitoring

may

be

done

through’

headphones.

@if

the

amplifier

has

a

tape-monitor

selector

and

if

connection

is

made

through

tape

deck

LINE

IN

and

LINE

OUT

jacks,

source/tape

comparison

is

possible

with

the

amplifier

monitor

selector.

In

this

case,

the

tape

deck

MONITOR

switch

should

be

set

at

TAPE.

SOURCE

MONITOR

Recording

me

+

‘esa

outputs

:

Amplifier

ape

inputs

i

|

:

!

LINE

IN

Tape

deck

LINE

OUT

REC

LEVEL

)

(

SOURCE

MONITOR

Erase

head

*

Record

head

Tape

immammmenmage”

Playback

head

PB

LEVEL

controls

These

controls

adjust

the

playback

signal

level

at

the

LINE

OUT

and

HEADPHONES

jacks.

The

adjusted

level

is

indicated

on

the

VU

meters,

with

a

O

VU

reading

corresponding

to

0.435

V

output,

which

appears

when

the

control

is

halfway

up

(with

the

indicator

at

“5").

Full

clockwise

rotation

of

the

PB

LEVEL

control

beyond

midpoint

will

provide

a

5

dB

boost,

and

full

counterclockwise

rota-

tion

will

bring

the

volume

down

to

zero.

Generally,

set

these

con-

trols

at

center

position.

The

usages

are

as

follows.

During

record

monitoring,

the

setting

of

these

controls

at

center

position

provides

nearly

equal

levels

on

both

SOURCE

and

TAPE

positions

of

the

MONITOR

switch.

During

playback,

adjust

the

tape

deck.to

match

other

sources:.

If

the

tape

deck

playback

level

differs

from

that

of

other

sources

connected

to

the

amplifier,

such

as

a

tuner,

record

player

etc.,

the

sound

may

become

suddenly

louder

or

softer

when

the

amplifier

input

selector

is

switched

back

and

forth

between

tape

and

some

other

source.

During

duplication

on

another

tape

deck,

adjust

these

controls

so

that

the

sound

is

not

distorted.

Recording

a

new

material

while

the

tape

is

in

motion

This

tape

deck

may

directly

go

from

play

to

record

while

the

tape

is

in

motion.

1.

Perform

the

necessary

steps

for

recording.

2.

Depress

the

REC

MODE

switches.

The

@

button

blinks.

3.

Depress

the

®

button

and

listen

to

the

playback

sound.

4,

At

the

point

where

new

material

is

to

be

recorded,

depress

the

@

and

»

buttons

simultaneously.

The

@

button

illumination

changes

to

a

steady

red

light.

At

this

moment,

recording

begins.

Recording

level

adjustment

Tape

saturation

levels

differ

between

the

types

of

tape.

Recording

level

should

be

adjusted

according

to

the

tape

to

be

used

in

order

to

utilize

it

to

the

utmost

permissible

level.

This

is

the

knack

not

only

for

deriving

the

possible

characteristics

from

the

tape

but

also

assuring

good

recording

result.

High

recording

level

is

recommended

to

reduce

annoying

tape

noise,

but

overloaded

and

distorted

tape

could

result

if

the

level

is

too

high.

When

using

a

Sony

SLH

tape,

for

example:

Adjust

the

recording

level

so

that

the

needles

of

the

VU

meters

swing

around

the

O

VU

reading

and

sometimes

swing

within

red

zone.

Continuous

deflection

within

red

zone

will

lead

to

distor-

tion.

On

the

other

hand,

as

for

TC-766-2,

when

recording

at

38

cm/s

(15

ips),

staying

of

the

needies

within

red

zone

is

still

tolera-

ble,

so

make

the

needles

swing

around

+3

VU

and

even

go

over

the

scale

for

an

instance

at

the

sudden

high

level

burst,

as

the

dynamic

range

becomes

wider

than

that

of

19

cm/s

(7

1/2

ips).

=10

.

=

+

oe,

oe

oe

3

3

0

+3

ae

;

en

oe

oe

,

i

Too

low

level

Too

high

level

Proper

level

Proper

level

at

(S/N

ratio

will

(Sound

will

be

38cm/s

with

be

poor.)

distorted.)

TC-766-2

But

be

cautious

with

peaks

of

short

duration

out

of

a

relatively

low

recording

level

;

as

the

needles

of

the

VU

meters

cannot

follow

them

because

of

their

inertia,

they

will

show

levels

much

smatler

than

the

actual

levels

(up

to

12

or

14

dB).

Recording

of

FM

broadcasts

or

discs

is

relatively

simple

because

broadcast

stations

and

disc

companies

use

standardized

limiters

to

reduce

the

dynamic

range

of

the

original

sound

source.

More

care

has

to

be

taken

in

case

of

live

recordings.

The

dynamic

range

is

undiminished

by

any

limiter,

and

a

small

movement

may

change

the

distance

between

sound

source

and

microphone,

thus

changing

the

signal

level

even

when

repeating

an

identical

pas-

sage.

Above

all

consideration

has

to

be

given

to

the

fact

that

tape

saturation

and

distortion

at

higher

frequencies

occur

at

lower

levels,

which

may

be

especially

troublesome

in

case

of

piano

re-

cordings,

etc.

To

make

things

even

more

complicated,

microphone

amplifiers

may

overload.

Using

the

MIC

ATT

switch

is

an

effective

method.

In

any

way,

having

acquired

a

little

bit

of

experience,

you

will

be

quite

successful.

Do

not

change

the

recording

level

once

the

recording

starts,

as

this

will

easily

be

audible

during

playback,

especially

when

the

stereo

balance

is

changed.

If

adjustment

becomes

necessary,

it

is

advisable

to

wait

until

a

break

or

a

pause

between

movements

oc-

curs

or

a

soloist

has

finished

his

turn.

PLAYBACK

For

TC-766-2,

check

the

2-track/4-track

selector

switch.

When

playing

back

a

2-track-recorded,

tape

>

left

(2-track)

When

playing

back

a

4-track-recorded

tape

—

right

(4-track)

@

TIMER

switch

—

OFF

@

POWER

switch

—

Depress

to

ON.

@

Thread

a

tape.

@

Tape

counter

—

Reset

to

[0000].

@

REEL

SIZE

selector

—

Set

to

the

reel

diameter

to

be

used.

@

TAPE

SPEED

selector

—

Set

according

to

the

speed

when

re-

corded.

@

MONITOR

switch

—

TAPE

©

Depress

the

»

button.

Now

playback

starts.

@

When

playback

completes,

depress

the

lf

button.

@In

playback,

TAPE

SELECT

switches

have

no

effect.

ERASING

When

the

tape

deck

functions

in

record

mode,

the

erase

head

operates

and

any

previous

material

is

erased

automatically.

To

erase

the

recorded

contents

without

recording:

@Turn

the

REC

LEVEL

controls

(both

MIC

and

LINE)

full

counter-

clockwise

to

“O”.

@

Set

the

BIAS

switch

at

the

position

appointed

in

page

8,

or

at

the

HIGH

position

And

start

the

tape

deck

in

record

mode.

;

@For

quick

erasure,

use

a

commercially

available

eraser.

10

TIMER-ACTIVATED

RECORDING

AND

PLAYBACK

Automatic

recording

and

playback

at

any

desired

time

is

possible

using

a

commercially

availabie

timer.

Continual

operation

may

be

accomplished

with

a

timer

designed

to

turn

the

tape

deck

on

and

off

any

number

of

times.

Recording

1.

Set

the

tape

deck

TIMER

switch

to

OFF.

2.

Connect

the

tape

deck

power

cord

to

the

timer

which

has

been

set

for

the

desired

time.

,

3.

Perform

the

necessary

steps

for

recording.

(Be

careful

not

to

depress

the

@

and

>

buttons.)

4.

Set

the

tape

deck

TIMER

switch

to

ON.

The

tape

deck

is

now

ready

for

automatic

start

of

recording

at

the

timer-set

time.

.

Playback

F

Procedure

is

almost

the

same

as

that

of

recording.

@Be

careful

not

to

depress

the

REC

MODE

switches.

@Be

sure

to

set

the

MONITOR

switch

to

TAPE.

NOTE

@Read

the

instruction

manual

of

the

timer

carefully

before

using

it.