Harman Kardon CITATION RECEIVER Owners Manual - Page 13

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If you do not get sound at this point, check the control positions given. Be sure that the TAPE 1 and TAPE 2 switches are in the extended position. Occasionally, an FM stereo multiplex circuit will introduce high frequency noise or hiss when processing a weak FM stereo broadcast. Rotating the MPX FILTER switch clockwise to ON will blend the high frequency program material of the left and right channels to eliminate much of this noise. If the noise persists, rotating the STEREO MODE switch counterclockwise to OFF will disengage the multiplex circuit. The broadcast will be received monophonically and the STEREO beacon will be off. Rotate the tuning control to move the dial pointer to the extreme right-hand side of the dial scale. The hiss you hear is interstation atmospheric noise picked up by the tuner. An FM muting circuit can be activated to eliminate this noise. To use this circuit, rotate the MUTE control slowly clockwise until the hissing disappears. The MUTE control is now adjusted to cancel interstation noise while allowing the greatest number of FM stations to be heard. Turning the control further clockwise will mute some of the weaker stations along with the noise. When the MUTE control is turned fully clockwise all but the strongest FM stations are muted. When the con- trol is turned fully counterclockwise into the detent position, the muting is disengaged. To receive AM broadcasts, touch the Sensor for AM. The lower dial scale is calibrated for AM broadcast frequencies. Note that when an AM station is tuned, the Quieting Meter acts as a signal-strength meter; and deflects to the right for best reception. For convenience. a third scale, the logging scale, with arbitrary numbers from 0 to 10, allows you to simplify the task of locating stations. All you need remember is that a particular station appears at a certain number on the logging scale. For your convenience the logging scale and illuminated dial pointer are repeated on the top of the Citation Receiver, Speaker Phasing Speaker phasing refers to the connecting of two stereo speakers to the Receiver in the same way. That is, the red terminal on the Receiver should be connected to the positive speaker terminal in each case. and the black to negative. If you have followed the suggestions on speaker wire coding mentioned under Connecting Speakers; your speakers should already be in phase. Now that you are listening to sound, you can check the phasing by ear if you wish. The diaphragms of speakers that are in phase with each other move simultaneously in the same direction in response to the same signal from the Receiver. The aural result is firm. solid bass and precise lateral location of the sound source. Speakers that are out of phase produce weaker bass and less coherent, less pre- cise location of the sound. To check for proper phasing by ear: 1. Rotate the STEREO MODE switch counterclockwise to the OFF position. 2. Play a broadcast with a single speaking or singing voice, or a solo instrument. 3. Stand in a position equidistant between the two speakers, If the voice or instrument appears to be coming from an area directly between the two speakers, the speakers are in phase. If the sound appears to be coming from two individual speakers, they have been connected incorrectly and are out of phase. To correct phasing. reverse the positive and negative conductors at the terminals of only one speaker. The speakers will now be in phase. Repeat the procedure for each pair of speakers. When you finish, return the STEREO MODE switch to the ON position. 11

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If
you
do
not
get
sound
at
this
point,
check
the
control
positions
given.
Be
sure
that
the
TAPE
1
and
TAPE
2
switches
are
in
the
extended
position.
Occasionally,
an
FM
stereo
multiplex
circuit
will
introduce
high
frequency
noise
or
hiss
when
processing
a
weak
FM
stereo
broadcast.
Rotating
the
MPX
FILTER
switch
clockwise
to
ON
wi
ll
blend
the
high
frequency
program
material
of
the
left
and
right
channels
to
el
iminate
much
of
this
noise.
If
the
noise
persists,
rotating
the
STEREO
MODE
switch
counterclockwise
to
OFF
will
disengage
the
multiplex
circuit.
The
broadcast
wi
ll
be
received
monophonically
and
the
STEREO
beacon
will
be
off.
Rotate
the
tuning
control
to
move
the
dial
pointer
to
the
extreme
right-hand
side
of
the
dial
scale.
The
hiss
you
hear
is
interstation
atmospheric
noise
picked
up
by
the
tuner.
An
FM
muting
circuit
can
be
activated
to
eliminate
this
noise.
To
use
this
circuit,
rotate
the
MUTE
control
slowly
clockwise
until
the
hissing
disappears.
The
MUTE
control
is
now
adjusted
to
cancel
interstation
noise
while
allowing
the
great-
est
number
of
FM
stations
to
be
heard.
Turning
the
control
further
clockwise
wi
l
l
mute
some
of
the
weaker
stations
along
with
the
noise.
When
the
MUTE
control
is
turned
fully
clockwise
all
but
the
strongest
FM
stations
are
muted.
When
the
con-
trol
is
turned
fully
counterclockwise
into
the
detent
position,
the
muting
is
disengaged.
To
receive
AM
broadcasts,
touch
the
Sensor
for
AM.
The
lower
dial
scale
is
calibrated
for
AM
broadcast
frequencies.
Note
that
when
an
AM
station
is
tuned,
the
Quieting
Meter
acts
as
a
signal
-strength
meter;
and
deflects
to
the
right
for
best
reception.
For
convenience.
a
third
scale,
the
logging
scale,
with
arbitrary
numbers
from
0
to
10,
allows
you
to
simplify
the
task
of
locating
stations.
All
you
need
remember
is
that
a
particular
station
appears
at
a
certain
number
on
the
logging
scale.
For
your
convenience
the
logging
scale
and
il
luminated
dial
pointer
are
repeated
on
the
top
of
the
Citation
Receiver,
Speaker
Phasing
Speaker
phasing
refers
to
the
connecting
of
two
stereo
speakers
to
the
Receiver
in
the
same
way.
That
is,
the
red
terminal
on
the
Receiver
should
be
connected
to
the
positive
speaker
terminal
in
each
case.
and
the
black
to
negative.
If
you
have
followed
the
suggestions
on
speaker
wire
coding
mentioned
under
Connecting
Speakers
;
your
speakers
should
already
be
in
phase.
Now
that
you
are
listening
to
sound,
you
can
check
the
phasing
by
ear
if
you
wish.
The
diaphragms
of
speakers
that
are
in
phase
with
each
other
move
simulta-
neously
in
the
same
direction
in
response
to
the
same
signal
from
the
Receiver.
The
aural
result
is
firm.
sol
id
bass
and
precise
lateral
location
of
the
sound
source.
Speakers
that
are
out
of
phase
produce
weaker
bass
and
less
coherent,
less
pre-
cise
location
of
the
sound.
To
check
for
proper
phasing
by
ear:
1.
Rotate
the
STEREO
MODE
switch
counterclockwise
to
the
OFF
position.
2.
Play
a
broadcast
with
a
single
speaking
or
singing
voice,
or
a
solo
instrument.
3.
Stand
in
a
position
equidistant
between
the
two
speakers,
If
the
voice
or
instrument
appears
to
be
coming
from
an
area
directly
between
the
two
speakers,
the
speakers
are
in
phase.
If
the
sound
appears
to
be
coming
from
two
individual
speakers,
they
have
been
connected
incorrectly
and
are
out
of
phase.
To
correct
phasing.
reverse
the
positive
and
negative
conductors
at
the
terminals
of
only
one
speaker.
The
speakers
wi
ll
now
be
in
phase.
Repeat
the
procedure
for
each
pair
of
speakers.
When
you
finish,
return
the
STEREO
MODE
switch
to
the
ON
position.
11