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Marantz Model 4300 Manual

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However,
an
outdoor antenna will provide better
reception.
Two
single wires
are
required
to
make
an
AM outdoor antenna. First, connect one end
of
a single wire
to
the
AM
ANTENNA
terminal
on
the
rear
panel,
and
the other
end
at a very high
position outdoors. Next, connect the other single
wire between the
"G"
terminal
and
an
earth
ground
(such
as
a water pipe).
(Refer
to
Figure 11.)
FM
QUADRADlAL
OUTPUT JACK
In anticipation
of
discrete 4-channel stereo broad-
casts,
your Model 4300
is
equipped with
an
FM
QUADRADIAL
OUTPUT jack. The signal avail-
able at this jack
is
the unequalized
output
of
the
FM
discriminator. Its frequency
response
cha-
racteristics
and
signal
level
are
ideal
to
drive any
4-channel adaptor. This jack
can
also
be
used
as
a simple white-noise generator
for
frequency
response
check
of
loudspeakers or amplifiers.
For this application,
release
FM
MUTING Switch
of
the Model 4300 in
FM
mode
and
tune
off
from any FM signal.
FM
DE-EMPHASIS SWITCH
Selects
75,uS
or
25,uS
FM
DE-EMPHASIS
for
accurate reception
of
Dolbyized
FM
signals.
DOLBY
FM
PRESET
LEVEL
CONTROLS
These
factory-adjusted controls govern
FM
out-
put
level
to
the DOLBY circuit.
These
controls
are
for
the
use
of
a qualified technician only.
MUTING
LEVEL
CONTROL
Adjusts the threshold
of
the inter-station muting
circuit. Turning this control counter-clockwise
will lower the threshold
to
permit reception
of
weak
sigriars.
POWER
MODE SWITCH
Switches from 100W x 2 operation
to
40W
x
4.
In
the 2-channel mode,
only
the
front
speaker
terminals
are
used.
BE
CERTAIN
THAT
THE UNIT'S
POWER
SWITCH IS OFF BEFORE OPERATING THE
POWER
MODE SWITCH.
NOTE:
When
operating the
unit
in the 100W x 2
mode, all speaker terminals
are
"above ground".
Consequently, the
use
of
any switching or testing
system which employs a common ground will
activate the limiting circuits
and
should therefore
be
avoided.
PRE
OUT,
MAIN
IN JACKS
For normal operation,
these
jacks
are
inter-con-
nected
with
the supplied jumpers.
When
con-
necting
an
external
unit
(equalizer, reverberation
unit, etc.), remove the jumpers and connect the
PRE
OUT jacks
to
the external unit's inputs. In
turn, connect the external unit's outputs
to
the
MAIN
IN
jacks.
It
is
possible
to
create a higher powered 4-channel
system by adding
an
external amplifier.
If
the external amplifier
has
less
than 100 watts
x
2,
it
should
be
used
to
drive the rear
speakers.
If
the external amplifier
has
more than 100 watts
x
2,
it
should
be
used
to
drive the
front
speakers.
In
each
case,
the
rear
panel
POWER
MODE Switch
should
be
set
to
the 100W x 2 position.
CONNECTING
AN
EXTERNAL
AMPLIFIER
FOR
REAR CHANNELS
To
use
an
extenral amplifier
for
the rear channels,
connect the REAR
PRE
OUT jacks
to
the inputs
of
the external amplifier. In turn, connect the
rear
speakers
to
the
output
terminals on the
ex-
ternal amplifier. The 4300 will then supply the
power
for
the
front
speakers
and
the external
amplifier will supply the power
for
the rear
speakers.
CONNECTING
AN
EXTERNAL
AMPLIFIER
FOR
FRONT CHANNELS
To
use
an
external amplifier
for
the
front
channels,
connect the REAR
PRE
OUTjacks
to
the FRONT
MAIN
IN jacks. Connect the rear
speakers
to
the
FRONT
speaker
terminals on the 4300. Then,
connect the FRONT
PRE
OUT jacks
to
the inputs
of
the external amplifier. In turn, connect the
front
speakers
to
the
output
terminals on the
external amplifier. The 4300 will then supply the
power
for
the
rear
speakers
and
the external
am-
plifier will supply the power
for
the
front
speakers.
CHASSIS GROUND BINDING POST
Permits connection
of
the ground wire from a
turntable or other component
to
reduce hum.
MAIN
AND
REMOTE SPEAKERS
Sixteen quick-connect terminals
are
provided -
eight
for
main
speakers
and eight
for
remote
speakers.
(Refer
to
"CONNECTING THE
4300"
and
"REMOTE SPEAKERS".)
12
… 14 …


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