Sony TC-758 Setup guide

SONY.
STEREO TAPECORDER
TC-758
OWNER’S INSTRUCTION MANUAL
¥
Precision, uncompromising quality, and superb stereophonic
sound...... they are now yours with the exciting Sony TC-758.
Principal Features
@An AC servo-controlled capstan drive motor
e Automatic reverse system with a sensing foil and the AUTO
REV selector. |
@ Timer-activated recording and playback
@ Closed-loop/dual capstan tape drive
e@ Three-motor, six-head function
e Tape equalization and bias selectors
e@FET amplifier directly coupled to the playback head
e@ High performance F & F (Ferrite and Ferrite) heads
@ Logic-controlled transport function
e Mic attenuator for excessive sound levels.
To fully realize the capability and obtain the utmost performance
of the TC-758, read this instruction manual thoroughly and keep
it handy for future reference.
TABLE OF CONTENTS
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Timer-activated recording and playback ....................... 10
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WARNING
@To avoid electrical shock, do not open the cabinet.
Refer servicing to qualified personnel only.
@ To prevent fire or shock hazard, do not expose the set to rain
or moisture.

PRECAUTIONS —
Safety
e
The
TC-758
is
set
for
120
V
AC.
To
operate
on
other
voltage,
consult
your
Sony
Service
Station
or
Sony
dealer
in
the
country
where
the
TC-758
will
be
used.
eShould
any
liquid
or
solid
object
fall
into
the
mechanism,
unplug
the
set
and
have
it
checked
by
qualified
personnel
before operating it any further.
e
Unplug
the
set
from
the
wall
outlet
when
it
is
not
to
be
used
for
an
extended
period
of
time.
e
To
disconnect
the
cord,
pull
it
out
by
the
plug.
Never
pull
it
by
the
cord.
Installation |
e
Good
air
circulation
is
essential
to
prevent
internal
heat
build-
upin
the
set.
Place
the
set
in
a
location
with
adequate
air
circulation.
Do
not
place
the
set
in
an
enclosed
cabinet
or
place
anything
on
top
of
the
set
that
would
block
the
ventila-
tion
grilles
at
the
back
and
top
of
the
set.
e
Do
not
install
the
set
in
a
location
near
heat
sources
such
as
radiators
or
airducts,
or
in
a
place
subject
to
direct
sunlight,
excessive
dust,
mechanical
vibration
or
shock.
Operation
ein
the
timer-activated
recording,
head
direction
has
priority
to
the
function
buttons,
and
tape
will
move
in
the
head
direction
regardless
of
the
function
button.
Head direction
indicator forward
button
e
Make
sure
the
built-in
reel
locks
are
secured
before
operating
the
set.
e
Make
sure
there
is
no
slack
in
the
threaded
tape.
is
threaded
improperly,
the
set
will
not
operate.
@
The
microphone
inputs
and
line
inputs
of
the
TC-758
can
be
used
simultaneously
for
mixing.
To
record
only
through
the
microphone
inputs,
disconnect
any
input
source
from
the
line
inputs
and
vice
versa.
@
For
normal
operation,
set
both
right
and
left
PB
LEVEL
controls
at
center
click
position.
If the tape
Maintenance
eKeep the heads and all surfaces over which the tape travels
clean in order to assure optimum performance. For cleaning
information, refer to ‘“’ MAINTENANCE ” on page 13.
Clean head Dirty head
Frequency response
TTA
seme
1
\Il
Even hardly visible dust layer of
1.5, deteriorates frequency response.
Output level (dB)
0.1 4 10
Frequency (kHz)
Playback waveform at 10 kHz
By clean head
By dirty head
The output level
fluctuates
If
you
have
any
question
or
problem
about
your
set,
consult
your
nearest
Sony
dealer

CONNECTIONS
When
making
connections,
observe
the
following
notes.
e
Turn
off
the
amplifier
while
making
connections.
einsert
the
cable
connectors
completely
into
the
jacks.
Loose
connections
may
cause
hum
and
noise.
eFor
high
quality
recording,
use
the
supplied
connecting
cord;
use
the
red
plug
for
right-channel
connection
and
the
remain-
ing
plug
for
left-channel
connection.
Amplifier Connetion
-For
playback,
connect
the
recorder
LINE
OUTputs
to
the
ampli-
fier
tape
inputs
(or
auxiliary
inputs).
For
recording,
connect
the
recorder
LINE
INputs
to
the
amplifier
recording
outputs.
If
your
amplifier
has
the
same
DIN
5-pin
connector
as
that
on
the
TC-
758
(indicated
REC/PB),
the
record
and
playback
connctions
can
be
made
with
a
single
cable,
such
as
Sony
RC-2
(optional).
Do
not
simultaneously
make
the
DIN
cable
connection
and
phono
cord connections.
Tape
Duplication
Connection
To
duplicate
a
tape
from
another
recorder,
connect
the
LINE
IN-
puts
of
this
recorder
to
the
line
outputs
of
another
recorder.
To
duplicate
from
this
recorder,
connect
the
LINE
OUTputs
of
the
recorder
to
the
line
inputs
of
another
recorder.
Microphones
Any
high-quality
low-impedance
microphone
equipped
with
a
phone
plug
may
be
used.
to tape inputs
Headphones
Headphones
must
be
of
8-ohm
impedance.
Power Connections
Connect
the
power
cord
plug
to
a
wall
outlet.
The
convenient
AC
outlet
featured
on
the
rear
panel
supplies
AC
power
(maximum
300
watts)
to
other
audio
components
such
as
a
turntable,
tuner
etc.
This
outlet
is
not
controlled
by
the
front
panel
POWER
switch.
Ground Connection
If
hum
occurs,
it
may
be
helpful
to
connect
the
Ground
terminal
to
an
appropriate
external
ground.
Note
on
Amplifier
Input
Selector
Setting
If
you
connect
the
recorder
outputs
to
the
amplifier
inputs
which
are
not
controlled
with
the
amplifier
tape-monitor
selector,
do
not
set
the
amplifier
input
selector
to
the
same
auxiliary
input
position,
while
recording.
Otherwise
oscillation
may
occur
since
the
re-
corder
output
signal
returns
to
its
inputs
through
the
amplifier.
If
this
happens,
reduce
the
PB
LEVEL
control
until
you
have
chan-
ged
the
amplifier
input-selector
setting
to
another
input
position.
Amplifier
to recording outputs
TC-758
to an AC outlet
pn
to external ground
Another stereo
LINE
IN
tape
recorder
to line outputs
to line inputs

OPERATION
OF
CONTROLS
Ha, SCE, YAR E!
@ Reel spindles with reel locks
Insert
the
tape
reel
hole
in
the
spindle.
Line
up
and
turn
the
spline
of
the
spindle
to
lock
the
reel
firmly
in
place.
@
Tape
counter
and
reset
button
Use
the
counter
for
indexing
tape
contents.
Once
a
reel
is
threaded,
set
the
counter
to
[0000]
by
pushing
the
reset
but-
ton.
The
figures
on
the
counter
change
as
the
tape
passes.
Make
a
note
of
the
figures
and
the
program
being
recorded
for
later
reference.
©
Sensing
poles
|
When
these
poles
sense
the
attached
foil
on
the
tape,
auto-
matic
reverse
syStem
works.
These
poles
and
foil
should
al-
ways
be
clean
to
ensure
reversing
operation.
@
Tape-height
adjusters
(both
supply
and
take-up
sides)
If
the
tape
rubs
the
reel
edge,
tape
height
can
be
adjusted
with
these
screws;
clockwise
rotation
will
raise
the
tape
and
counter-
clockwise
rotation
will
lower
it.
Before
adjusting,
check
both
supply
and
take-up
reels.
If
they
are
warped,
replace
them.
@
AUTO
REV
selector
(Automatic
reverse
selector)
CONT REV <...... continuous reverse
REV
2D
...eceeees
..one
reverse
cycle
from
right
to
left
NON REV —.....---- one direction (non-reverse)
Refer to ‘’ AUTOMATIC REVERSE SYSTEM”’ on page 8.
@
REEL
SIZE
selector
Select
the
optimal
rewind
tension
and
reel
torque
for
the
reel
used;
the
101/2"’
position
for
101/2-inch
reels,
and
“7”
is
for
7-inch
or
5-inch
reels.
Use
the
same
size
reel
for
both
supply
and
take-up.
8
AUT REVERSE
@ TAPE SPEED selector
For high quality recording, ‘‘71/2ips’’ (19cm/s) is recom-
mended. Recording at “33/4ips” (9.5 cm/s) extends recording
time. In playback mode, set the tape speed which corresponds
to the speed of the prerecorded tape.
@ Tension arms (both supply and take-up sides)
These arms maintain uniform tape tension. When all the tape
are wound and the tension arms are released to horizontal posi-
tion, tape transport mechanism will stop.
© Head section
Always keep this section clean for optimum performance. Re-
fer to page 13.
@ Function buttons
<q rewind, <q forward to the left, MJ stop, » forward to the
right, P»P fast forward tape motion.
These buttons can be depressed at random to change tape
motion from normal to fast wind, and vice versa (Logic-control-
led transport function). :
@ PAUSE lever
To pause momentarily in playback or recording (to eliminate
undesired portions), depress down the PAUSE lever. The lamp
will light. Tape will stop (tape-and-head contact remains). To
restart, move it upward. This lever is also used for proper
timing of the recording. For instantaneous recording, depress
the PAUSE lever first and then set the recorder in record mode.
At the moment when you wish to record, move the PAUSE
lever upward. Recording will begin immediately.

12
13
14
15
16
17
K:)
19
yA
@®
REC
TIMER
LOCK
lever
(for
only
timer-activated
recording)
To
make
timer-activated
recording,
move
this
lever
to
the
right
while
depressing
the
RECORD
buttons
and
the
recorder
will
be
locked
in
record
mode.
To
return
this
lever
to
the
left,
depress
either
of
the
function
buttons
when
the
power
is
supplied.
@®
Head
direction
indicator
In
the
timer-activated
recording
(REC
TIMER
LOCK
lever
is
set
in
the
right
position),
this
indicator
shows
the
direction
of
the
heads
which
has
priority
to
the
function
buttons.
@ RECORD buttons
@® BIAS selector
Select
the
correct
bias
current
for
the
tape
used
in
record
mode.
The
following
list
shows
recommended
settings.
@ EQ selector
Select
the
optimal
equalization
characteristics
for
the
tape
used
in
record
and
playback
modes.
The
recommended
settings
are
listed
below.
Tapes
SONY SUPER 150
SUPER A
TDK 150
SCOTCH 150
Other 150 type tapes
SONY SLH
MAXELL LNE 35
AGFA PE 35
BASF LP 35, 35LH
SCOTCH 203, 206
TDK SD 150
BIAS
selector
EQ
selector
LOW
NORMAL
LOW
SPECIAL
HIGH
NORMAL
With some tapes, frequency
response may be good but dis-
SPECIAL tortion may be high.
HIGH
Doi
Sa
ee
ee
a
ee
ee
eFor
record,
select
proper
setting
of
BIAS
and
EQ
selectors.
e
For
playback,
select
proper
setting
of
only
EQ
selector.
@ MIC ATTenuator
In
normal
use,
this
control
should
be
in
the
"0"
position.
When
recording
an
excessively
high
level
sound
source
with
a
microphone,
use
this
control
for
easier
adjustment
of
mic
level,
to
prevent
overloading
the
MIC
amp
of
the
recorder;
“15”
attenuates
15
dB,
“30”
will
attenuate
30
dB.
21
22
23
24
25
@® MIC input jacks
Connect any low impedance microphone equipped with a phone
plug.
© MIC input level controls
Adjust the record level of the MIC and REC/PB input jacks
with these controls; inner knob for MIC-R input and outer knob
for MIC-L input.
@ LINE INput level controls
Adjust the record level of the LINE IN jacks; inner knob for
R LINE IN jack and outer knob for L LINE IN jack.
@ VU meters
With the MONITOR selectors set at SOURCE, the meters show
the recording level. With the selectors set at TAPE, the
meters show the output level of the LINE OUT and HEADPHONE
jacks: O VU reading corresponds to 0.43 volts.
@ MONITOR selectors
For playback of tapes, set the selectors to TAPE. While record-
ing, the TAPE position monitors the recorded sounds and
SOURCE position monitors the sounds to be recorded (source
material). Record level adjustment can be made with these
selectors at SOURCE.
@® POWER switch |
Turn on and off the power with this switch.
@ HEADPHONE jack
Connect 8-ohm headphones to monitor the recording level.
Headphones level can be adjusted by the PB LEVEL comtrols in
recording and playback.
@ PB LEVEL controls
These adjust the playback signal level of LINE OUT andi HEAD-
PHONES jacks. This adjustment reflects on the VU meters
with a O VU reading corresponding to 0.43 volt output. During
normal use, set the inner knob (R channel) to the center detent
position and align the outer knob (L channel) with the inner
knob. If the reproduced tape sound is too high orlow when
reproducing rated level signal (O VU) with the amplifier volume
control set around 9 to 12 o'clock position, adjust these knobs
to match ti:3 amplifier sensitivity; fully clockwise rotation will
provide 5dB boost, and fully counterclockwise rotafion will
mute the sound. These controls will also be effecive if the
tape was recorded with imbalanced levels.

TAPE THREADING
Use
the
same
size
reels
for
both
supply
and
take-up.
1.
For
right
direction
playing,
place
an
empty
reel
on
the
take-up
(right)
side
and
a
full
reel
on
the
supply
(left)
side.
2. Lock the reels as illustrated.
3.
Thread
the
tape.
Be
sure
to
pass
the
tape
under
the
tension-
arm
guides,
and
above
the
sensing
poles.
4.
Wrap
the
tape
around
the
hub
of
the
right
reel
or
insert
the
end
of
the
tape
into
the
reel
slot.
5.
Rotate
the
reels
a
few
times
by
hand
to
take
up
tape
slack.
The
tension
arms
will
be
set
in
vertical
(operating)
position.
eFor optional 101/2-inch metal reel, use the supplied (2) reel
adaptors (RAD-10) as illustrated.
Note:
Do
not
use
the
spacer
when
using
optional
101/2-inch
plastic reels.
Ree! holder
Reel spindle
Reel adaptor
Turn the outer knob to secure the reel to the adaptor.
eFor
the
supplied
101/2-inch
reel,
neither
reel
adaptor
nor
spacer
is
required.
Note:
When
threading
a
tape,
be
sure
that
the
function
but-
tons
of
D>,
PP,
<i
and
<
are
released.
If
any
button
is
depressed
and
the
power
is
on,
the
tape
will
start
when
either
side
tension
arm
is
set
in
the
operating
position.

STEREO
RECORDING
Connect
the
desired
source
program
to
the
proper
input
jacks
of
the recorder.
@
Turn
on
the
recorder
and
the
source
equipment.
@ Thread a tape.
©
At
the
beginning
of
the
tape,
set
the
tape
counter
to
[0000]
by
pressing
the
reset
button
for
later
reference.
@
Set
the
REEL
SIZE
selector.
@
Set
the
TAPE
SPEED
selector
as
desired.
@
Set
the
BIAS
and
EQ
selectors
according
to
the
tape
used.
Refer
to
the
setting
table
on
page
5.
@
Set
the
MONITOR
selectors
to
SOURCE.
@
While
watching
the
VU
meters,
adjust
the
respective
level
controls
so
that
the
needle
of
each
meter
deflects
to
the
O
VU
position.
Use
the
LINE
IN
controls
for
a
line-program
(off-the-
air
and
disc)
recording,
and
use
the
MIC
controls
for
a
mic
recording.
Be
sure
to
turn
the
unused
level
controls
fully
counterclockwise
to
MIN.
For
mic
recording,
use
the
MIC
ATTenuator
if
necessary.
MIC LINE IN
MIN ‘MAX MIN MAX
Be
sure
to
turn
the
unused
level
control
fully
counterclockwise.
©
With
the
RECORD
buttons
fully
depressed,
depress
the
>
(or
“@)
button.
RECORD
button
lamps
will
light.
Now,
recording
starts.
e
Depress
the
If
button
when
recording
completes
e@
Note
the
tape
counter
figure
for
recording
content
indexing.
To
continually
record
on
opposite
side,
depress
the
<q
(or
P)
button
with
the
RECORD
buttons
fully
depressed.
The
tape
transport
direction
will
be
reversed
and
opposite
side
recording
will
begin.
If
the
sensing
foil
is
on
the
tape,
tape
transport
direction
will
reverse
with
the
AUTO
REV
selector
set
to
.
See
page
8
Recording monitoring
With
headphones,
instantaneous
tape/source
~
comparison
is
possible
by
setting
the
recorder
MONITOR
selectors
alternately
to
SOURCE
(sound
from
source
is
heard)
and
to
TAPE
(sound
from
tape
an
instant
after
it
has
been
recorded
is
heard).
With
an
amplifier
having
a
tape-monitor
selector,
this
comparison
is
pos-
sible
at
the
amplifier
by
setting
the
recorder
MONITOR
selectors
to
TAPE.
Headphones
volume
can
be
adjusted
by
the
PB
LEVEL
controls
without
affecting
the
recording.
eWhile
recording
with
a
microphone,
headphone
monitoring
is
advisable
since
speaker
monitoring
may
cause
a
howling
effect.
SOURCE
MONITOR
selector
Recording
?
output
:
Tape
input
i {
| ;
Line
input
©
6
Line
output
Input level <
control o
; MONITOR
SOURCE 1 selector
TAPE
S PB LEVEL control
Erase
head
Record
Playback
Erase
head
ze
head
head
|
Roto
bi-lateral
nen
Mic-and-line Mixing
Connect
microphone
and
line
source
to
their
respective
inputs.
While
listening
through
headphones,
adjust
the
mixing
level
by
turning
the
respective
controls
of
MIC-L,
-R,
LINE
IN-L,
R.
The
VU
meters
show
the
composite
recording
level
of
line
and
mic
inputs.
For
recording
procedure,
refer
to
“STEREO
RECORDING”

STEREO PLAYBACK AUTOMATIC REVERSE SYSTEM
The TC-758 features an automatic tape reversing system. The
automatic reverse system activates only when using sensing foil
(supplied) and setting the AUTO REV selector to either CONT REV
<> or REV 2} position.
Place a 1/2 inch piece of sensing foil on the outer side of
the tape, leaving approximately 3 feet of blank portion (leader
tape can be used instead of a blank portion). If the foil is attached
too close to the tape end, the tape will detach from the reel before
reversing. Be sure to center the foil on the tape and trim off any
excess. If the sensing foil or the sensing pole is dirty, reversing
operation will be impaired.
@ Set up the stereo playback system and turn the operating power
of each component on.
@ Thread a recorded tape.
3 feet
longer than 4"
Set
the
REEL
SIZE
selector.
.
Sat
——
.
Set
the
TAPE
SPEED
selector
to
match
the
prerecorded
tape.
Yj
3
aN
@
Set
the
EQ
selector
according
to
the
tape
used.*
um
ts
\
@
Set
the
PB
LEVEL
controls
at
center
position.
A
{(
t=
An
A
Se
@
Set
the
MONITOR
selectors
to
TAPE.
.
.
Beginning
of
the
@
Depress
the
p>
(or
<q)
button.
Sensing
foil
left
direction
program
e
Adjust
sound
level
and
tone
quality
with
amplifier
controls.
Leader
tape
End
of
the
right
Sound
level
can
also
be
adjusted
with
PB
LEVEL
controls.
direction
program
*When playing back a Sony SLH or equivalent low noise tapes, set
the EQ selector to SPECIAL to prevent overswing of the meter
needie. Since these tapes provide higher output than standard
tapes, the recorder output level is automatically reduced approxi-
mately 2.5dB by setting the EQ selector to SPECIAL during
playback.
At tape end, depress the Mf button. To continually play back the
other side, depress the other forward button (<@ or p>). It is
unnecessary to reverse the reel positions.
When the AUTO REV selector is set at either > or => position,
the tape will automatically be reversed at the sensing foil.

To
Reverse
the
Tape
While
Recording
NOTE
Attach
the
sensing
foil
at
the
tape
end and
set
the
AUTO
REV
e
When
using
a
tape
with
foils
attached
to
both
ends,
pass
the
selector
to
REV
>.
The
tape
will
automatically
reverse
from
right
first
foil
over
the
sensing
pole
in
fast
forward,
then
put
the
to
left
and
recording
in
the
left
direction
will
begin.
Be
careful
recorder
into
the
playback
mode.
If
you
play
the
tape
in
normal
not
to
set
the
selector
to
CONT
REV
<>
with
the
foils
attached
to
speed,
the
tape
will
reverse
at
the
first
foil.
both
tail
ends,
or
the
tape
will
reverse
again
after
recording
in
e
With
the
AUTO
REV
selector
set
to
REV
D,
the
reversing
sys-
‘both
directions
and
erase
the
previous
recordings.
tem
operates
only
at
the
end
of
right
direction.
To
Reverse
the
Tape
While
Playing
Back
.
Attach
the
sensing
foil
at
the
end
of
the
recorded
portion
and
set
the
AUTO
REV
selector
to
REV
2.
The
tape
will
automatically
reverse
from
right
to
left
and
playback
in
the
left
direction
will
begin.
To
play
the
tape
repeatedly,
attach
the
foils
at
both
ends
of
the
recorded
portion
and
set
the
selector
to
CONT
REV
@>.
MONO
RECORDING
AND
PLAYBACK
lf
your
amplifier
or
receiver
feeds
a
monaural
signal
to
the
record-
When
using
the
sensing
foil
and
setting
the
AUTO
REV
selector
ing
outputs,
you
can
make
a
mono
recording
with
the
TC-758.
_
properly,
reverse
recording
and
playback
can
be
done
automati-
Mono
recording
and
playback
procedures
are
the
same
as
those
cally.
Refer
to
“AUTOMATIC
REVERSE
SYSTEM”.
for
stereo
recording
or
playback.
Amplifier
mode
Switch
Forward
Recording track button
R(inner)
R

TIMER-ACTIVATED
RECORDING
AND
PLAYBACK
Automatic
recording
and
playback
may
be
made
with
a
commer-
cially
available
timer.
Recording
@
Preset
the
timer
at
the
desired
time.
@
Select
a
desired
station
with
a
connected
tuner.
©
Connect
the
power
cord
plug
of
the
TC-758
to
an
outlet.
@ Push the POWER switch ON.
@ Thread a tape on the TC-758.
@
Set
the
necessary
controls—AUTO
REV
selector
(including
sens-
ing
foil
setting),
TAPE
SPEED
selector,
BIAS
and
EQ
selectors,
REEL
SIZE
selector.
@ Adjust the recording level.
@
While
depressing
the
RECORD
buttons,
slide
and
lock
the
REC
TIMER
LOCK
lever
to
the
right.
Make
sure
the
head
direction
with
the
Head
direction
indicator.
When
the
direction
is
correct,
skip
the
next
step
©.
©
If
the
direction
is
not
correct,
proceed
as
follows:
@
Press
the
PAUSE
lever
down
(Pause
lamp
will
light).
@
Depress
your
desired
forward
button
(>
or
<d).
—The
heads
will
rotate.
@
Depress
the
Mf
button.
@
Return
the
PAUSE
lever
to
upper
(off)
position.
©
Proceed
again
with
the
above
mentioned
step
@.
@
Remove
the
power
cord
plug
of
this
recorder
from
the
outlet
and
connect
it
to
the
timer
outlet.
@
Surely
depress
the
desired
forward
button
(p>
or
<d).
Make
sure
the
PAUSE
lever
is
set
at
the
upper
(off)
position.
Now
the
recorder
is
ready
for
automatic
start
of
radio
program
recording.
NOTE
In
timer-activated
recording,
head
direction
has
priority
to
the
function
buttons.
Thus
tape
will
move
in
the.
same
direction
as
that
of
head.
AC outlet
ake
10
=> || See the Head
ems direction indicator
Playback
1. Preset the timer at the desired time.
2. Push the POWER switch ON.
3. Thread a tape on the TC-758.
4. Set the necessary controls.
5. Connect the power cord plug to the timer outlet.
6. Depress the desired forward button (p> or <@).
Now the recorder is ready for automatic start of playback.
NOTE
In timer-activated playback, function buttons have priority to the
head direction.

SPECIAL
RECORDINGS
Sound-on-Sound
Recording
The
TC-758
can
make
a
composite
recording
from
the
left
channel
to
the
right
channel
and
vice
versa.
This
enables
you
to
record
a
duet with
your
favorite
singer
or
create
other
special
effects.
Sound-on-Sound
recording
on
the
right
channel
[L—R]
1.
Record
the
basic
program
on
the
track
1
of
the
left
channel
according
to
“MONO
RECORDING
AND
PLAYBACK”
on
page
9,
and
rewind
the
tape
to
the
beginning.
Connect
the
L
LINE
OUT
jack
and
R
LINE
IN
jack
by
using
the
supplied
Connecting
cord
RK-74H.
eBe
sure
to
use
the
plugs
of
the
same
color
at
both
ends
of
the
connecting
cord.
_Insert
a
microphone
into
the
R
MIC
jack.
‘Insert
stereo
headphones
into
the
HEADPHONE
jack
for
monitoring.
Set
the
L
MONITOR
selector
to
TAPE
and
the
R
MONITOR
selector
to
SOURCE.
Set
the
PB
LEVEL
controls
to
the
center
position.
.
Adjust
the
recording
level:
Temporarily
play
back
the
tape
and
adjust
the
R
LINE
INput
and
R
MIC
input
level
by
using
respective
level
control
and
right
VU
meter.
-
Rewind
the
tape
to
the
beginning.
_While
depressing
the
R
RECORD
button,
depress
the
>
button.
Recording
will
begin.
.
Through
the
left
headphone,
the
playback
of
the
basic
record-
ing
on
the
track
1
is
heard;
through
the
right
headphone,
the
composite
recording
on
the
track
3
is
heard.
When
recording
is
finished,
rewind
the
tape
to
the
beginning.
To
play
back
track
3,
set
the
R
MONITOR
selector
to
TAPE
and
L
MONITOR
selector
to
SOURCE.
For
recording
on
the
left
channel
[RL],
use
the
R
LINE
OUT
jack
and
L
LINE
IN
jack.
Other
recording
procedures
are
the
same
as
described
above
except
for
the
channel
used.
e
e
@
{ LINE IN(R)
Playback
amplifier
O PB LEVEL section
control(L)
MONITOR RECORD
LsourceR aR
AL
Vt
A
TAPE
> LINE OUT(L)
(OC)
LINE
IN
level
control(R)
Playback
head
Track-1 (L) = age
Track-3
(R)|
J
oo
===
mmeee@e Mic sound
mus
Prerecorded
basic
sound
i
ame Ea
Ce A SS SE SE
Amplifier section
q=uum
g
MIC
input
gw
level
control(R)
Mic
(R)
Aa
Echo Recording
The
TC-758
can
make
more
resonant
recordings
either
stereo-
ph
onically or monophonically.
Stereo echo recordings
1.
2:
Oo) O1
8.
Now,
the
echo
recording
preparation
is
complete.
Insert
two
microphones
into
the
MIC
input
jacks.
Turn
the
R
LINE
IN
and
L
LINE
IN
controls,
and
MIC
level
controls
fully
counterclockwise.
Connect
the
LINE
IN
jacks
and
LINE
OUT
jacks
by
using
the
supplied Connecting cord RK-74.
_Insert
stereo
headphones
into
the
HEADPHONE
jack.
.
Set
the
MONITOR
selectors
to
TAPE.
.
While
depressing
the
RECORD
buttons,
depress
the
p>
button
and start recording.
_While
listening
through
the
headphones,
adjust
the
microphone
input
levels
by
turning
the
MIC-R
and
MIC-L
controls.
Then
slowly
turn
the
R
LINE
IN
and
L
LINE
IN
controls
clockwise
for
desired
echo
through
the
microphone
input
source.
eBe
careful
not
to
excessively
increase
the
record
volume
Otherwise
oscillation
may
occur
as
a
rumbling
sound.
Rewind the tape to the beginning.
Start a formal
recording.
In
this
case,
disconnect
the
stereo
headphones.
Use
of
the
stereo
headphones
may
disturb
your
tempo
because
of
the
time-lag
of
the
program
source
through
the
headphones.
Monophonic echo recording
Re
cording
procedure
is
almost
the
same
as
described
above
ex-
cept for the use of one microphone.
Playback
amplifier
PB LEVEL se ction
control
LINE OUT
Connecting cord RK-74H
LINE IN
(©)
LINE
IN
level
control(R)
meee Original sound
mums Delayed sound
Play back
head
Record
head
| | Snes
Tak 1) E—T ==
Le tected
Tack 3°) _ KIS
|
on oe
eee
LsourceER |, R
db
Ob
if
TAPE a
> |
Amplifier section
= on
¢
SS
a
ee
;
a
i
I
-
5
MIC
input
|
level
control
Microphone
i
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:
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oom
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86
11

EDITING
There
are
two
ways
of
editing,
editing
by
tape
duplication
and
splicing.
They
have
some
differences
as_
follows:
Editing Through Duplication
@ Two recorders are required.
e Two direction recorded tapes can be edited.
e Cassette programs can be edited.
e
More
creative
results
can
be
obtained
by
using
the
mic-and-line
mixing
facility.
@
If
the
original
programs
are
recorded
in
various
levels,
they
can
be
copied
at
the
same
level
by
controlling
the
record
level
of
the
slave
recorder
(or
the
output
level
of
the
master
recorder).
e Noise and distortion will be increased while duplicating.
Editing by Splicing
@ You can only splice tape recorded in one direction.
eSplicing
is
the
most
common
technique
used
by
professionals,
but
it
requires
much
more
skill
for
noise-free
splicing.
e You can hardly correct mistakes.
@Program switching can be done more accurately.
According
to
your
situation
or
preferred
editing
results,
either
way
can
be
used
or
the
two
can
be
mixed.
In
either
case
experience
will
provide
the
required
skill
for
noise-free
and
accurate
editing
results.
Before
editing,
play
the
original
tape
thoroughly,
and
note
the
Tape
counter
number
where
the
unwanted
sounds
(narration
or
commercials,
pop
noise,
etc.)
are
located.
Then
go
back
and
proceed
with
editing
in
either
way.
Duplication Procedure
1. Connect two recorders.
2. Start the master recorder in playback mode, and the slave
recorder in record mode. At the unwanted portion, stop the
slave recorder with the PAUSE lever until the unwanted pas-
sages have passed.
Note: To stop the tape, the PAUSE lever should be used ta
prevent possible click noise.
Splicing
1. Advance the tape to the counter number to be spliced, and
carefully mark it on the outer side of tape with a soft colored
pencil (yellow will give the most distinct mark).
Note: Take care not to get excess marking material on the heads
as any stain on the head will cause contamination and impair good
tape-to-head contact.
2. Neatly overlap the tapes to be spliced and cut diagonally.
Note: Do not use ordinary cellophane tape as it tends to spoil
recording tapes. Also avoid using magnetized scissors or razor
blades. Magnetized instruments will cause a “click” or “pop” at
the spliced portion.
Take care not to unnecessarily touch the spliced portion of the
tape. Grease and sweat of finger or other contamination will
hinder the good sticking.
3. Place the two diagonal tape ends together, outer side up, on a
flat surface. Be careful to make ends meet but not overlap.
Apply a piece of splicing tape diagonally over the aligned ends,
and press it firmly.
4. Trim off the excessive splicing tape, slightly cutting into the tape.
12
ERASING
In record mode, the erase heads operate and previous recordings
are automatically erased.
To erase a tape without adding a new recording:
1. Thread the recorded tape to be erased.
2. Turn the MIC and LINE IN level controls fully counterclock-
wise to MIN or disconnect all inputs.
3. Set the tape speed at 71/2 ips.
4. While pushing the RECORD buttons, depress the > button.
Now erasing begins.
5. When erasing completes, depress the Jf button.
6. To erase the reversed side, while pushing the RECORD buttons,
depress the <@ button.
e For continuous and automatic erasure, use a sensing foil and the
AUTO REV selector.
e For quick erasure, a bulk eraser (optional) is reeommended.

MAINTENANCE
Cleaning
Heads
and
Tape
Path
Generally
head
cleaning
after
every
10
hours
operation
will
be
sufficient.
However,
all
surfaces
over
which
the
tape
travels
should
be
cleaned
before
making
critical
recordings.
Dirty
heads
tape
path
and
sensing
poles
will
cause,
eLloss
of
high
frequency
response
which
results
in
poor
sound
* quali
cee
sound
volume
in
recording
and
playback,
or
no
sound
when
severe
»@ Sound dropout
e
Unsatisfactory
results
in
tape
erasing
e@
Tape
direction
does
not
reverse
Remove
the
head
cover
by
merely
pulling
it
out.
With
a
head
cleaning
tip
(supplied)
or
a
soft
cloth,
wipe
gently
the
heads,
capstan,
and
pinch
roller
etc.
If
the
deposits
are
difficult
to
remove,
moisten
the
tip
Or
a
cloth
with
alcohol
or
head
cleaning
solution.
e
Be
careful
not
to
scratch
the
head
surface.
Record head
Playback head
(Roto-bilateral head)
Capstan
Pinch roller
Erase head
Tape guide
eFor
easier
cleaning
of
the
pinch
roller
and
capstan,
rotate
them
by
holding
a
tension
arm
in
the
operating
position
and
pressing
the
respective
>
or
<Q
button.
Be
careful
not
to
jam
the
tip
between
the
pinch
roller
and
capstan.
Rubber band
Right tension
ae
i a
ed
Demagnetizing
Heads...Be
sure
to
disconnect
the
power
cord
plug
from
the
wall
outlet.
Residual
magnetism
will
gradually
build
up
on
the
heads
through
continuous
use,
or
by
the
accidental
touch
of
a
piece
of
magne-
tized
steel
(screwdriver,
scissors,
etc.),
and
will
produce
noise.
Periodically
use
the
Sony.
Head
Demagnetizer.
Lubrication
To
maintain
optimum
performance
of
the
recorder,
consult
your
nearest
Sony
Service
Station
or
Sony
dealer
once
a
year
for
jubrication and inside check.
Cleaning Cabinet
Finger
prints,
food
and
beverage
stains,
dust
and
dirt,
etc.,
can
mar
the
beauty
of
your
recorder.
The
cabinet,
panel
and
knobs
can
be
cleaned
with
soft
cloth
moistened
with
a
mild
soap
solution.
Do
not
use
any
type
of
scouring
powder,
abrasive
pad,
or
solvent.
13

TROUBLE
SHOOTING
GUIDE
The
following
chart
will
help
in
isolating
any
trouble
which
you
may
have
with
the
TC-758.
If
the
trouble
persists
after
you
have
made
these
checks,
consult
your
nearest
Sony
Service
Station
or
Sony dealer.
TROUBLE WHAT TO DO
xt ge te
Tape
does
not
move
when
the
eCheck
the
tape
threading.
function
button
is
depressed.
eCheck
PAUSE
lever
setting.
BN
en
a
i
aac
a
ee
No sound during playback eCheck connections between
the TC-758 and external am-
plifier.
eCheck amplifier input setting.
eCheck amplifier volume con-
trol.
@ Check PB LEVEL control setting.
a eg a a a ee
Unclear
or
distorted
recording
e@Clean
heads
and
tape
path.
or
excessive
wow
and
flutter
eCheck
for
warped
reels.
Se ae sekg ik a aha ac a Se eee
Severe
hum
or
noise
e@
Use
shielded
connecting
cables.
e Ensure that cables are not near
transformers, generators or AC
power cord.
e Try reversing the AC plug in the
wall outlet.
e Check mic impedance.
e Make sure the mic attenuator
is set to "O”.
Mic sound is too low.
Unsatisfactory
erasing
e
Clean
the
erase
head.
e Clean the sensing poles or re-
place the dirty sensing foil with
new one.
Tape
direction
does
not
reverse.
14
SPECIFICATIONS
Power requirements
Power consumption
Semiconductors
Track system
Tape speed
Recording time
(with 1100 m tape)
Fast winding time
Reels
Heads
AC 120V 50/60Hz (100, 110, 127, 220,
240V adjustable by the Sony personnel)
6OW
81 transistors, 75 diodes, 1 IC, 2 FETs
4-track 2-channel stereo, 4-track monaural
71/2 ips, 33/4 ips
Stereo recording 360 min. at 33/4ips ,
Mono recording 720 min. at 33/4ips
2 min. 30 sec. with 740 m tape (101/2-inch
reel)
101/2 inches or smaller
1 Record head
1 Playback head
2 Erase heads
4
\ Roto bi-lateral head
Recording bias frequency
Motors
Signal-to-noise ratio
Harmonic distortion
Frequency response
Wow and flutter
Inputs
Outputs
160 kHz
AC servo-controlled capstan motor 1
8-pole induction reel motors 2
56 dB (SLH tape)
53 dB (standard tape)
1.2%
SLH tape
20-30,000 Hz at 71/2 ips
30-25,000 Hz+3 dB at 71/2ips
20-20,000 Hz at 33/4 ips
standard tape
20-25,000 Hz at 71/2 ips
30-20,000 Hz+3 dB at 71/2 ips
20-17,000 Hz at 33/4 ips
0.05% at 71/2ips (WRMS)
0.08% at 33/4ips (WRMS)
MIC inputs; oss s6ees i esas 2 (phone jacks)
Sensitivity 0.2 mV (— 72 dB)
For low impedance microphone
LINE IN DUtS 4 /oeawarndecateuesd tae ses eeeee 2
Sensitivity O.O6V (—22 dB)
Impedance 100 kohms
CINE OU T puts. 26036 44-06 ohne woes See nats 2
Output level 0.435V (—5dB) at load
impedance of 100 kohms
LEVEL control set to center detent position
Soet:to: MAX sosekoucsucs aise 0.775V (O dB)
Suitable load impedance higher than 10
kohms
HEADPHONE jack
For 8-ohm stereo headphones
Record/playback connector
AC outlet
Dimensions
Weight
Supplied accessories
Input impedance lower than 10 kohms
Output impedance lower tham 10 kohms
Unswitched 1 (300 watts maximum)
171/8(w) x 173/4(h) x 83/4(d)”
435 x 451x221 mm
54 |b
24.5 kg
Empty reel R-11B (1)
Reel adaptor RAD-10 (2)
Connecting cord RK-74H (2) '
Head cleaning tip (1 set)
Sensing foil (1 set)
Design
and
specifications
are
subject
to
change
without
notice.
Sony tape for best recording