hfe_technics_sa-8000x_operationg instructions_en.pdf

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Technics
by
Panasonic
sA-gooo(
Before operating this set. please read these instructions
completely.
Your new
"Technics
by
Panasonic"
CD-4
FM/AM
4-channel/2-chan
nel receiver
was
man
ufactured
and
assembled
under exacting quality
control
standards.
The
incorporation
of
the
latest
advances
in
design and
the
use
of the
most
modern
com-
ponents
assure
outstanding performance
with
superb sensitivity
and
tonal
quality.
A few
minutes of your
time, wisely
spent
read-
ing
carefully through
this
instruction
booklet,
will
assure you
of
getting
the
maximum
benefit
of
this
fine
component's
potential.
CONTENTS
MAINTENANCE
............
...................
2
HELPFUL
HrNrs
.....:.:.:,::::..::::....::..:.:..
...........,
STAR FEATURES
.........
...................
2
CONNECTION WIRING
FOR
4-CHANNEL
SYSTEM
...................
4
CONNECTION
WIRING
FOR
2-CHANNEL
SYSTEM
(BALANCED TRANSFORMERLESS)
.....................
4
CoNNECTION
PROCEDURE
.............
6
swlTcHEs
AND
CONTROL$
..............................
9
oPERATING
PROCEDURE
................13
4-CHANNEL
SYSTEM
......................15
4-channel
reproduction
.............15
Notes
when
playing
CD-4
records
...............18
A
brief explanalion ol the
CD-4
system .........19
TECHNICAL
SPEC|F|CAT|ONS
..........20
j
STAR
FEATURES
AMPLIFIER $ECTION
MAINTENANCE
WARNING CONCERNING REMOVAL
OF
COVERS
NOTE: This set should be
serviced
by
qualified
technicians
only.
I
Dillerential, All-stage,
Amplilier
Circuit
Direcl-Coupled
OCL-
No
service
information
is
provided
for
customers.
PRODUCT SERVICE
Should
your "Technics
by
Panasonic"
product
ever
require
servicing,
refer
to
the
Directory
of
Authorized
Service
Centers or your
franchised "Technics
by Panasonic" dealer
lor
detailed
instructions.
WARRANTY
Two
years
parts
and
Iabor, subject to the
terms
of
the
war-
ranty. Read
your warranty
caref
ully.
The main
amplif
ier
of
this receiver
uses an all-stage direct-
coupled
OCL
circuit with a diflerential
amplif
ier
unit in
the
first
stage.
As
this
circuitry
has no
output capacitor, the
band
width
of
the
low
frequency region is wide; further,
as
there
is
no interlerence with
the
low frequency damping
factor,
suflicient damping can
be
applied
to the
speakers.
Complete
absence
of
muffling
in the
bass
region
means
that
bass
tones can be reproduced at high volume with
utmost
clarity.
The use
of a
differential amplifier
unit in
the
first
stage
means
that
power
stability
is
maintained even
if
there
is
variation in
the voltage
or
temperature. Moreover, as
the
power
circuit
of
the differential
amplif
ier
unit
uses
a
zenet
diode,
direct
current
stability at
the
speaker
terminals
is
further
improved. These features
result
in
excellent
per-
formance characteristics over the whole sound range
at any
output level.
LOCATION OF
SERIAL
NUMBER
You
will
find the
serial
number located at
the
bottom of
the
unit.
I
Balanced-Translormerless
Circuit
lor
lmproved
2-channel Reproduction
Though the
SA-8000X
is
a 4-channel
receiver,
switching
the
balanced-transformerless
circuit
during
2-channel
repro-
duction
will
activate all
four
main ampliliers.
Unique Tone Control
The tone
control circuit
is
of
unique construction, employ-
I
HELPFUL
IIINTS
1. Keep
this
unit
away
from
electrical
noise-generating
devrces
such as
motors and
fluorescent
lamps.
2. The
set should not
be
exposed
to
direct sunlight
and
should
be
kept
free lrom dust,
moisture and
vibration.
3.
The
set
is
ventilated through vents
on
the top and
bottom
of
the
cabinet.
Do not
place any object
on the
top
or
place
the set on a soft surface which might block the
ventila-
tion
holes
and result in too much internal
heat.
Place
the
receiver
in
a
position
away
from any
heat
sou
rce.
ing
the
NFB
circuit
of
the main
amplifier.
The high-level
NFB
technology adopted
in
the
OCL
circuit
affords smooth
f
requency
variation, enabling
ready control
of
the
sound
characteristics
to
suit the
acoustic properties
of
the room and
personal
taste.
Moreover,
the
absence
of a
tone control
amplifier
means
that
there is
no
distortion
due to the tone
control
circuit.
Low-Noise, 2-stage, Direct-Coupled Equalizer
Circuit
As
the
input
stage
to
the
amplifier,
an
equalizer
circuit
which
can
handle
the
weakest
of
signals is
necessary for
a high
S/N ratio,
one of
the
most important factors
for
good
perf
ormance.
The
equalizer circuit featured in
this
unit
is
a
PNP-NPN,2-
stage
direct-coupled
circuit,
incorporating
a
combinatron
of
low-noise
PNP and
NPN
transistors. The
direct-current
NFB
from
the
emitter of
the
NPN
transistor of the
second
stage
is
applied
to the
base of the
first
stage,
resulting
in
I
4.
The
cabinet of your set should be given the same
care
which
you
would
give any piece of fine
furniture.
The
f
ront panel should
be
cleaned with
a
solt cloth moistened
with a mild
soap-and-water solution.
NEVER
USE
A
SOLUTION CONTAINING
BENZOL
OR
PETROLEUM.
f
J
i
i
TUNER
SECTION
a
circuit
with
a high
direct-current stability, a
low distortion
factor and
a
high
S/N
ratio.
I
nignty Sensitive
FM
Front-End
Two
Tape-Monilor Circuits
This receiver
houses
two
tape-monitor
circuits. Two
4-
channel
tape decks
can
be
connected
to
the
unit,
and
simultaneous
recording
on
two
decks or tape-to{ape
dub-
bing
is
possible.
An extremely
convenient
feature
is
the
a-
bility
to
monitor
during
dubbing,
switching from the
source
sound
to the
just-dubbed recording.
I
Because
it
is
the
input stage to
the
FM
tuner, the
FM
front-
end determines
the
performance of
the
receiver. The
f
ront-
end
ol
this
receiver has high input impedance, using a
4-
pole
MOS-type
FET
with
good S/N
characteristics.
The
FET
not
only has high
impedance, but
also an
extremely
low
level of
feedback,
resulting
in
a high S/N ratio
and superb
sensitivity. The
variable
capacitor
is
the
frequency-linear
type, allowing
easy
station
selection.
I
Built-in
CD-4
Demodulator
Because
this
unit has
a
built-in
CD-4 demodulator,
the
purchase
of a
4-channel
cartridge
to
playback discrete
4-
channel sounds
from
CD-4
records is
all
that
is
necessary.
When
playing a
CD-4
record, the
separation
and the
carrier
level of
the
4-channel
signal are
changed
depending
upon
the characteristics
of
different 4-channel cartridges.
This
unit has
a
volume
control for the
separation and
for
the
High
Perlormance
lF
Amplifier
Circuit
The
lF
amplifier circuit has
an
important bearing
on
the
gain and
selectivity
obtained. The
lF
section
of
this
receiver
features five-stage
construction (including three
differential
amplifier
stages)
and
three two-element ceramic
Iilters.
This
gives
it
higher limiter characteristics and
better selectivity.
I
Full
exploitation
of
each of
the
amplitication stages
gives
a selectivity of
better
than
65
dB and an S/N ratio
as
high
as
65
dB.
carrier level
to
assure
faithful
response
to all
4-channel
cartridges.
Any
type
of
4-channel cartridge can
be used
with
confidence that the
best
performance from
the
CD-4
record
will
be
fully
demonstrated.
f
nlgnty Eflicient
A
Muting Circuit
Flexible
AFD
Controls
lor
Matrix
Operation
The
exciting
SA-8000X
incorporates
a
special
encoding-
decoding
circuit to transform 2-channel input signals
to
4-
I
true
muting circuit,
incorporatingadouble-tuned
LCcircuit,
affords
clean
cut-out
of
inter-statron noise
and exclusion
of
unwanted interference
f
rom
strong
signals.
channel
sound ambiance.
With
the
4-channel matrix circuit,
it
is
also
possible
to
convert
all your
2-channel material
to
4-channel
sound and
record
it.
Also, since
it
features
com-
lC-Engineered
MPX
Circuit
The
MPX
circuit
of
this receiver
includes
a
monolithic
lC,
incorporating two differential switching circuits.
lt
features
stable performance,
unaffected
by
heat
or
humidity.
Hign Performance AM Tuner
A ceramic
filter
exclusive
for
AM
is
used,
giving
high selec-
tivity
and
sensitivity.
This section also has
a
frequency-
linear
variable capacitor
to
assure easy station
selection.
I
pletely
variable
(0,-1)
AFD
controls,
you can
match
its
decoding
lactors with
the
matrix
encoding
factor
of
any
4-2-4
records,
thus
recreating
the original
acoustic
condi-
tr
on
I
s.
But
the
real
secret of quality 4-channel reproduction
is
in
the phase
diflerence in the rear
speakers.
The
SA-BOOOX
mode selector
(l4,renables
you to select either
a
90
or
O
phase difference.
I
Large, Peak-indication-type VU Meters
Because
a peak-indication-type
VU meter, which
indicates
the
peak output
of
the
program
source,
is
utilized
for
each
channel,
the dynamic range
ofthe
program source
can
be
determined
at
a
glance.
ln
addition,
these
meters
can
be
used
to
adjust the output level
of
each channel of
the
pro-
gram source and to check
the frequency characteristics
of
the
cartridge
and
the tape head. Moreover, a meter sensiti-
vity selector
is
used.
CONNECTION
1,rfIRING
FOn,
4.CIIANNEL
SYSTEI\'I
Ff's "tr-
4-CHANNEL TAPE
DECK
LINE
OUT
PLAYBACK
REC OUT
LINE
IN
REC
OUT
PLAYBACK
RECORD PLAYER
(CD-4
BECORD
or
MATRTX
4-CH
RECORD)
lol
o
1*^
,
lo@
lOo
t"..
o
.l.
[
lol
Elo
Y
4CH
BALANCED
'+[
r
When used
for
4-channel
reproduction,
the
Balanced-
Transformerless
switch
must
be
set at
4CH.
CONNECTION
\IiIIRING
F'OA
g.CI{ANNNL
SYSTEilI
FALANCEDJTRAN
tFr@
2-CHANNEL TAPE
DECK
LINE
OUT
PLAYBACK
REC OUT
LINE
IN
LINE
OUT
PLAY
BACK
RECORD PLAYER
9
tgt
'"@
pe
33
I
oo
t
T+
Connection
in
accordance with
figure
1
is
also
possible ior
2-channel reprodr:ctron (provided
the rear
speakers
are
not
connected).
I
To use
the
set
as
a high
outp
However.
for
high-output 2-channel reproduction
connect
as shown
in
this
figure.
the
Balanced-Transformerless
the
speaker
connections
as

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