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CONTENTS
FOOT
OS
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ee
Cee
6
ya
owes
2
Effective
Operations
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12
Stereo
System
Composition
...........-
3
Using
the
Tape
Decks
..........-.++++-+
13
Installation
Precautions
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tee
Bi
Using
PRE
OUT
and
POWER
AMP
IN
Rear
Panel
Facilities.............200405
4
Jacks
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14
.
Conditions
Frequently
Mistaken
for
RSMIRRC
RDI
Sir
STE
SG
HR
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S
Malfunctions
........s0.¢seeese0es
15
Front
asa
Facilities
......
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sated
8
Specifications
ae
Operations
...+.0-eseeerers
Siete
ras
11
Schematic
Diagram..............
Insertion
|
FEATURES
Power
Amplifier
with
Ultra-wide-frequency-band
Output
and
Low
Distortion
This
amplifier
has the
impressive
feature
which
is
the
NSA
(Non-Switching-Amplifier),
created
specially
by
Pioneer,
This
is
a
type
of
amplifier
that
adopts
the
merits
of
both
the
class
A
and
class
B
amplifiers,
and
it
excels
in
keeping
down
the
heat
loss
and
allows
the
transistors
to
operate
all
the
time
in
the
active
region,
For
this
reason,
a
high
output
power
with
a
very
low
distortion
factor
is
yielded
all
the
way
up
to
the
high
frequencies.
Also
it is
designed
to
pack
a
punch
at
every
stage
—
this
is
evident
in
the
first
stage
differential
input,
current
mirror
load;
the
predriver
stage
emitter
follower
drive,
constant-
current
load;
and
the
output
stage
2-stage
Darlington,
parallel
push-pull
output
circuit
configuration.
All
this
adds
up
to
a
DC
amp
configuration
which
uses
SL
RETs
(Super
Linear
Ring
Emitter
Transistors},
which
have
an
excellent
switching
response
in
the
high
frequency
range,
for
the
power
transistors,
Continuous
Power
Output
is
100watts*
per
chan-
nel,
min.,
at
8
ohms
or
4
ohms
from
10
Hertz
to
20,000Hertz
with
no
more
than
0.005%
total
harmonic
distortion.
T-shaped
“skyve"
heat
sink
is
used
because
it
is
lightweight
and
it
dissipates
the
heat
very
effectively.
Even
when
the
amplifier
is
operating
continuously
under
full
power
conditions,
these
heat
sinks
keep
the
rise
in
tem-
perature
down,
and
they
ensure
that
a
high-quality
power
is
provided,
Flat
Amplifier
with
High
S/N
Ratio
and
Low
Distortion
This
mode!
adopts
an
ICL
DC
amplifier
which
is
com-
posed
of
a
two-stage
differential
amplifier
for
the
first
stage
using
ultra-low-noise
dual
FETs
and
an
emitter
follower
for
the
final
stage.
This
construction
is
successful
in
achieving
a
low
distortion
and
a
high
signal-to
noise
ratio,
and
in
main-
taining
an
S/N
ratio
of
110dB
(AUX).
Equalizer
Amplifier
for
Faithful
Reproduction
of
Sound
from
Records
The
equalizer
amplifier
is
composed
of
a
complementary
differential
input
which
uses
ultra-low-noise
transistors
for
the
first
stage,
and
a
3-stage
direct-coupled
all-stage
push-
pull
configuration.
This
results
in
yielding
a
low
noise
and
low
distortion,
a
signal-to-noise
ratio
of
90dB
(PHONO)
and
an
RIAA
equalization
of
only
+0.2dB
across
a
fre-
quency
spectrum
of
20Hz
to
20kHz.
The
maximum
rated
input
is
250mV/MM
(at
1kHz,
0.002%
total
harmonic
distortion)
and
tOmV/MC,
proving
that
there
is
more
than
enough
headroom
for
the
reproduction
of
sound
from
records.
Load
Impedance
Selector
Switches
This
amplifier
comes
with
cartridge
load
selectors
which
make
it
possible
to
display
the
performance
of
moving
magnet
(MM)
cartridges
to
the
full
for
sophistication
in
operation,
The
load
resistance
selector
has
five
settings
(100/10k/25k/50k/100k
ohms)
and
the
load
capacitance
selector
similarly
has
five
settings
(100/200/300/400/
500pF),
so
that
the
two
selectors
can
be
used
inde-
pendently.
They
allow
you
to
make
settings
which
are
in
line
with
the
optimum
values
of
the
phono
cartridge
you
are
using
and
also
to
create
the
sound
quality
of
your
choice.
Another
feature
is
the
MC
position
which
means
you
can
connect
a
moving
coil
(MC)
cartridge
with
a
subtle
and
delicate
sound
quality
directly,
All
you
have
to
do
to
derive
the
maximum
in
enjoyment
from
your
MC
car-
tridge
is
set
the
function
selector
to
the
PHONO
2
MC
position,
Power
Output
Indication
on
Fluorescent
Display
Tubes
The
conventional
needle-type
of
power
output
meters
have
been
replaced
with
the
more
up-to-date
fluorescent
display
tubes
featuring
digital
technology,
They
employ
logarithmic
compression
circuits
and
a
peak
hold
circuit
to
indicate
the
power
output
over
a
0.3mW
to
1OOW
range
without
any
assisting
selection
on
the
attractive
fluorescent
display
tubes.
2
*
Measured
pursuant
to
the
Federal
Trade
Commission’s
Trade
Regulation
rule
on
Power
Output
Claims
for
Amplifiers.