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Marantz Model 2270 Seite 10

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TUNING
knob
until
the desired station
is tuned.
Adjust
the volume
control
for
comfortable listening volume.
The tuner section
of
the Model
2270
is equipped
with electronically triggered circuits which auto-
matically mute interstation noise and automati-
cally switch to the proper mode
of
operation
for
stereo and monophonic FM broadcasts. In addition,
the STEREO
indicator
light
automatically indi-
cates a stereo broadcast.
TUNING
METERS
The Model
2270
is equipped
with
two
meters, a
SIGNAL
STREI\IGTH MU L
TIPATH
meter and a
TUNING
meter.
1. The
SIGNAL
STRENGTH/MU
L
TIPATH
Meter is dual purpose:
a. In normal operation,
it
indicates
the
sig-
nal strength
of
the
AM or FM signal
to
which
your
receiver is tuned.
b.
If
you push in
the
MUL
TIPATH
push-
switch -- and
only
so long as you hold
it
in --
this
meter
will
indicate
multipath,
to
enable you
to
point
your
FM antenna
in the best
direction
to
optimize
FM re-
ception.
2. The
TUNING
meter operates on FM
only
and indicates correct station tuning.
TUNING
AM:
For
optimum
AM reception, tune
to
the
desired station. Then rotate the tuning
knob
slightly back and
forth
until
the maximum reading
is obtained on the
SIGNAL
STRENGTH Meter.
The
TUNING
Meter is
not
used
for
AM.
FM: Switch
the
selector
to
FM and tune
to
the
desired station. Then slowly rotate the
tuning
knob
slightly back and
forth
until
maximum reading is
obtained on the
SIGNAL
STRENGTH Meter, and
the TU NING Meter points
to
the center scale
position.
Your
Receiver is
now
properly tuned.
FM
ANTENNA
ORIENTATION
With a rotatable FM antenna, you may
further
opti-
mize FM reception by pointing
the
antenna
to
the
proper direction
for
minimum
multipath
.
First
tune
to
the
desired station as above. Then ho-
ld in the
MUL
TIPATH
pushswitch while you rotate
the FM antenna. Stop
the
antenna at
that
position
for
which
minimum
deflection is indicated on the
MULTIPATH
meter. Then
release
the
MUL
TIPATH
pushswitch
to
restore
the
meter
to
its normal SIG-
NAL
STRENGTH
function.
MONO
IN
{L,
R)SWITCH
Depressing
both
MONO
IN
(L,
R) pushswitches
will
convert all
input
signals to the monophonic
mode excluding signals at the rear panel record and
front
panel TAPE dubbing jacks.
While playing a single channel source such as
TV
or
AM,
depress
both
MONO
IN (L, R) push-
switches
to
feed the signal through both channels.
When playing a monophonic phonograph record,
usethesepushswitches to suppress rumble, common
mode noise and pinch - effect
distortion.
TAPE/SOURCE
MONITOR
SWITCH
When this pushswitch is
out
(SOURCE)
the
program
being recorded and heard is determined by
the
set-
ting
of
the selector switch. With the
MONITOR
pushswitch in (TAPE),
the
amplifier
input
connec-
tions are switched
to
the
output
of
the
tape recor-
der
without
affecting
the
signal presented
to
the
tape recorder
without
affecting the signal presented
to
the tape recorder's input. Thus you may listen to
the source signal before and
after
it
is recorded (on
a 3-head tape recorder).
A tape recorder
to
be monitored is selected by this
pushswitch. When this pushswitch is
"out
(2)/'
the
tape recorder connected
to
the
PLAY
2 jacks on
the rear panel is monitored. With the pushswitch ,.
in
(1)."the
tape recorder connected
to
the
PLAY
1
jacks is selected.
If
a tape recorder is connected
to
the dubbing
11\1
jacks on the
front
panel, the tape
recorder is always selected regardless
of
any posi-
tion
of
the pushswitch.
LOUDNESS SWITCH
For
more pleasing tonal balance at
low
level
listening, the
bass
and treble should be boosted.
With the LOUDNESS switch depressed, the
bass
and treble are automatically boosted at
low
listen-
ing levels
to
maintain this tonal balance.
Hi-BLEND
SWITCH
With
the
pushswitch
"in,"
stereo separation is sligh-
tly
reduced
for
high frequencies. For weak FM sig-
nals
with
excessive noise
and/or
interference, this
offers moderate separation
with
moderate suppres-
sion
of
out-of
-phase noise and
distortion
compo-
nents.
Unlike
most FM noise filters, this does
not
sacrifice
full
frequency response.
Hi-BLEND
will
also reduce phonograph record pin-
ch-effect
distortion
and vertical noise components,
but
will
not
materially affect tape
"hiss."
For normal listening, leave this pushswitch
"out."
6
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