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Marantz SR-73 - Marantz SR-73 Controls and Connections Overview; Rear Panel Connection Terminals; Front Panel Controls Identification

Marantz SR-73
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LOCATION
AND
FUNCTION
OF
PARTS
AND
CONTROLS
Rear
panel
connections
All
connections
to
the
rear
panel
should
be
made
with
the
power
to
the
entire
system
turned
off.
To
avoid
confusion,
connect
one
cable
at
a
time
between
the
different
components
of
your
system.
This
is
the
safest
way
to
avoid
cross-connecting
channels
or
confusing
signal
inputs
with
outputs.
@
FM
antenna
terminal
(75
ohms)
For
connecting
an
external
FM
antenna
with
a
coaxial
cable,
or
for
connecting
a
cable
network.
AM
antenna
and
ground
terminals
For
connecting
the
supplied
AM
loop
antenna.
Use
the
terminals
marked
AM
and
GND.
in
areas
where
the
supplied
AM
loop
antenna
gives
unsatisfactory
results,
it
is
recommended
that
the
receiver
be
connected
to
an
outdoor
antenna.
Use
the
AM
terminal
for
this.
An
earth
lead
can
be
connected
to
the
GND
terminal
to
further
reduce
interference.
@
LD
video
input
jack
Connect
to
the
video
output
jack
of
a
Laser
Disc
player.
VCR1
video
input/output
jacks
Connect
the
IN
jack
to
your
main
VCR's
video
output
jack
and
connect
the
OUT
jack
to
the
VCR’s
video
input
jack.
VCR2
video
input
jacks
Connect
the
video
output
jacks
of
the
second
VCR
to
this
IN
jack.
© © ©
TV
monitor
output
jack
Connect
to a
TV's
video
input
jack.
This
jack
outputs
the
video
signal
from
the
source
selected
by
the
input
selector.
@
PRE
OUT
(CENTRE)
jack
This
is
the
pre-output
jack
for
the
centre
channel.
Use
this
jack
for
connection
to a
main
amplifier,
if
used.
©
CENTER
speaker
output
terminals
Connect
to
the
centre
speaker.
)
SURROUND
speaker
output
terminals
Connect
to
the
surround
(rear)
speakers.
When
connecting
only
one
surround
speaker,
connect
its
+
input
terminal
with
the
A
output
terminal
and
its
-
input
terminal
with
the
C
output
terminal.
()
PHONO
input
jacks
Connect
to
the
output
jacks
of
a
turntable
equipped
with
a
moving-
magnet
(MM)
cartridge.
Connect
the
turntable’s
ground
wire
to
the
GND
terminal.
*
|fahumming
sound
or
other
noise
is
heard
when
the
ground
wire
is
connected,
disconnect
the
ground
wire.
@)
CD
input
jacks
Connect
to
the
audio
output
jacks
of
a
CD
player.
«®)
TAPE
input/output
jacks
Connect
the
IN
jacks
to
the
cassette
deck’s
PLAY
(OUT)
jacks,
and
connect
the
OUT
jacks
to
the
cassette
deck’s
REC
(IN)
jacks.
©
DCC
input/output
jacks
Connect
the
output (PLAY)
jack
of
the
Digital
Compact
Cassette
(DCC)
deck
to
the
IN
jack,
and
connect
the
input
(REC)
jack to
the
OUT
jack.
(™)
LD
audio
input
jacks
Connect
to
the
audio
output
jacks
of
a
Laser
Disc
player.
)
VCR1
audio
input/output
jacks
Connect
the
IN
jacks
to a
VCR's
audio
output
jacks
and
the
OUT
jacks
to
the
VCR's
audio
input
jacks.
VCR2
audio
input
jacks
Connect
the
audio
output
jacks
of
the
second
VCR
to
these
IN
jacks.
©
(P)
PRE
OUT
jacks
These
are
the
pre-output
jacks
for
the
front
and
surround
channels.
Use
these
jacks
for
connection
to
a
main
amplifier,
if
used.
@)
REMOTE
jacks
Connect
to
a
component
equipped
with
REMOTE
(D-BUS)
jacks.
(See
page
8.)
The
D-BUS
REMOTE
CONTROL
terminals
can
also
be used
for
the
RC-5
remote
control
system.
@
FRONT
speaker
output
terminals
Connect
to
the
front
speakers.
(S)
AC
OUTLET
Connect
the
AC
power
cords
of
a
CD
player,
cassette
deck,
etc.,
of
your
system.
The
power
supply
from
these
outlet
is
interlocked
with
the
POWER
switch
of
the
SR-73.
The
maximum
power
consumption
of
the
connected
components
must
not
exceed
the
following
limit:
50
W
MAX.
@
AC
power
cord
Plug
into
AC
230V
household
outlet.
Note on
loudspeaker
impedance:
The
power
ratings
specified
for
this
Marantz
amplifier
are
determinec
using
fixed-value
test-load
impedances.
However,
the
actual
impedance
of a
loudspeaker
system
will
vary
with
frequency,
deviating
from
the
nominal
rating.
This
Marantz
amplifier
will
drive
any
modern
loudspeaker
system
with
a
rated
impedance
of
4
ohms
or
higher.
A
few
newel
loudspeakers
feature
impedances
of
less
than
4
ohms.
The
high
curren:
output
capability
of
this
Marantz
amplifier
can
provide
the
additiona
power
necessary
to
drive
such
low-impedance
speakers.
However
during
extended
passages
of
high
volume,
the
protection
circuitry
may
temporarily
interrupt
operation.
{f
this
occurs,
simply
reduce
the
volume
accordingly.
The
protection
circuitry
is
specially
designed
so
that
it
cannot
affect
the
sound
quality
during
normal
operation.
When
connecting
two
pairs
of
speaker
systems
to
the
main
System
1
anc
System
2
speaker
connections,
check
the
rated
impedance
of
each
of
the
speakers.
Two
pairs
of
8-ohm
speakers
operated
at
the
same
time
wil
produce
an
effective
combined
impedance
of
4
ohms.
2
pairs
of
4-ohrr
speakers
will
produce
an
effective
impedance
of
2
ohms;
one
pair
of
8
ohm
speakers
and
one
pair
of
4-ohm
speakers
will
produce
an
impedance
of
2
and
2/3
ohms.
When
using
System
1
and
System
2
speakers
at
the
same
time,
take care
to
avoid
prolonged
operation
at
high
power
otherwise
the
protection
system
may
temporarily
interrupt
operation
Remember,
the
lower
the
actual
impedance,
the
more
power
the
receive!
must
produce
in
order
to
meet
the
demand.

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