Harman Kardon HK1680 Owners Manual - Page 6

listen, broadcasts, FM/AM, preset, memory, 9kHz/EVEN, 10kHz, selector

Page 6 highlights

To listen to broadcasts To tune to an FM station manually, press the FM or AUTO FM pushbutton (17) (16) and place the TUNING button (25) in its MANUAL position (in). To scan to higher frequencies, press the TUNING UP button (35), releasing it when the desired frequency has been found. To scan to lower frequencies, press the TUNING DOWN button (34). During scanning, no sound will be audible at any time, even as you pass frequencies that contain broadcasts. This feature protects your audio system and loudspeakers from sudden high level signals. As you scan, the SIGNAL STRENGTH display (29) will help you locate broadcasts. To tune to an AM station, press the AM pushbutton (18), and follow the same procedure. The QUARTZ LOCK indicator (30) will light any time the receiver is properly tuned to any station. To scan automatically, place the TUNING button (25) in its AUTO position (out). When you press the TUNING UP button (34) or TUNING DOWN button (35), the hk1680 will automatically scan in the desired direction, stopping at each station to play several seconds of music, If the system is not disengaged by placing the SCAN STOP button (24) in its "on" position (in), the hk1680 will continue scanning and sampling until disengaged. In its "on" position (out) the MUTING button (28) will automatically reject weak or distant stations that would give poor reception. To receive these stations, press the MUTING button (28) to its "off" position (in). When the TUNING button (25) is in its AUTO position (out), the muting function is enabled regardless of the MUTING button position. You can adjust the action of the muting circuit in your hk1680 by using the MUTE ADJUST control (43) on the rear panel. The mute adjust is set at the factory so that you can receive the maximum number of stations. You may wish to alter the setting to mute some of the weaker and noisier FM stations by adjusting the MUTE ADJUST control (43) clockwise. When the MUTE ADJUST control (43) is turned fully clockwise, all but the strongest FM stations are muted. During adjustment of the MUTE ADJUST control (43) make sure the TUNING button (25) is in its MANUAL position (in). When the AUTO FM button (16) is selected, the hk1680 will automatically shift into the mono mode when the signal is too weak for good stereo reception. To receive weak stations in mono (and reduce noise), press the FM button (17) instead. FM/AM preset memory Each of the FM/AM PRESET MEMORY buttons (23) on the hk1680 can store one AM station and one FM station in memory for easy recal l. Once registered in memory, these stations may be recalled simply by selecting either the AM or FM band with the function selector buttons, then depressing the proper FM/AM PRESET MEMORY button (23). To register a station in memory, first locate the station as described earlier, and press the SCAN STOP button (24). Then press the MEMORY button (22) and the word MEMORY will appear at the right hand side of the frequency display (33). Within 5 seconds after pressing the MEMORY button (22) press any of the 6 AM/FM PRESET MEMORY buttons (23) to store a station in memory. To recall a station from the memory at any time, simply select the proper function (FM or AM) and press the appropriate FM/AM PRESET MEMORY button (23). Any time any of the FM/AM PRESET MEMORY buttons (23) is pressed, and the MEMORY button (22) is also pressed, the previously registered station wil l automatically be cancelled and the new one registered. Whenever the receiver is turned on, it will automatically tune to the last station you listened to, regardless of whether that station was registered in memory or not. When recall ing stations from the memory, the FM/AM PRESET MEMORY push buttons should not be pushed in rapid succession. There should be at least a 1 second interval between the selection of each station. Note: If power to hk1680 is cut for any reason, a battery backup system will activate to prevent preset stations from being cancelled from the memory. Momentary power cuts will not affect the memory. However we recommend that you do not connect the hk1680 to an outlet that may inadvertently be turned off. Otherwise excessive battery drain may occur. ODD (9kHz)/EVEN (10kHz) selector The ODD (9kHz)/EVEN (10kHz) SELECTOR (54) is used for matching the tuning step of your hk1680 with the frequency step of the AM/FM stations in your area. With the selector placed in the ODD (9kHz) position, tuning step of the hk1680 is set to 9kHz for AM broadcasting; it also sets tuning step for FM broadcasting to 50kHz automatically. Setting it in the EVEN (10kHz) position sets the tuning step to 10kHz for AM and 200kHz for FM broadcasting. 5

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To
listen
to
broadcasts
To
tune
to
an
FM
station
manually,
press
the
FM
or
AUTO
FM
pushbutton
(17) (16)
and
place
the
TUNING
button
(25)
in
its
MANUAL
position
(in).
To
scan
to
higher
frequencies,
press
the
TUNING
UP
button
(35),
releasing
it
when
the
desired
frequency
has
been
found.
To
scan
to
lower
frequencies,
press
the
TUNING
DOWN
button
(34).
During
scanning,
no
sound
will
be
audible
at
any
time,
even
as
you
pass
frequencies
that
contain
broadcasts.
This
feature
protects
your
audio
system
and
loudspeakers
from
sudden
high
level
signals.
As
you
scan,
the
SIGNAL
STRENGTH
display
(29)
will
help
you
locate
broadcasts.
To
tune
to
an
AM
station,
press
the
AM
pushbutton
(18),
and
follow
the
same
procedure.
The
QUARTZ
LOCK
indicator
(30)
will
light
any
time
the
receiver
is
properly
tuned
to
any
station.
To
scan
automatical
ly,
place
the
TUNING
button
(25)
in
its
AUTO
position
(out).
When
you
press
the
TUNING
UP
button
(34)
or
TUNING
DOWN
button
(35),
the
hk1680
will
automatically
scan
in
the
desired
direction,
stopping
at
each
station
to
play
several
seconds
of
music,
If
the
system
is
not
disengaged
by
placing
the
SCAN
STOP
button
(24)
in
its
"on"
position
(in),
the
hk1680
will
continue
scanning
and
sampling
unti
l
dis-
engaged.
In
its
"on"
position
(out)
the
MUTING
button
(28)
will
automatically
reject
weak
or
distant
stations
that
would
give
poor
reception.
To
receive
these
stations,
press
the
MUTING
button
(28)
to
its
"off"
position
(in).
When
the
TUNING
button
(25)
is
in
its
AUTO
position
(out),
the
muting
function
is
enabled
regardless
of
the
MUTING
button
position.
You
can
adjust
the
action
of
the
muting
circuit
in
your
hk1680
by
using
the
MUTE
ADJUST
control
(43)
on
the
rear
panel
.
The
mute
adjust
is
set
at
the
factory
so
that
you
can
receive
the
maximum
number
of
stations.
You
may
wish
to
alter
the
setting
to
mute
some
of
the
weaker
and
noisier
FM
stations
by
adjusting
the
MUTE
ADJUST
con-
trol
(43)
clockwise.
When
the
MUTE
ADJUST
control
(43)
is
turned
fully
clockwise,
all
but
the
strongest
FM
stations
are
muted.
During
adjustment
of
the
MUTE
ADJUST
con-
trol
(43)
make
sure
the
TUNING
button
(25)
is
in
its
MANUAL
position
(in).
When
the
AUTO
FM
button
(16)
is
selected,
the
hk1680
wil
l
automatical
ly
shift
into
the
mono
mode
when
the
signal
is
too
weak
for
good
stereo
reception.
To
receive
weak
stations
in
mono
(and
reduce
noise),
press
the
FM
button
(17)
instead.
FM/AM
preset
memory
Each
of
the
FM/AM
PRESET
MEMORY
buttons
(23)
on
the
hk1680
can
store
one
AM
station
and
one
FM
sta-
tion
in
memory
for
easy
recal
l
.
Once
registered
in
memory,
these
stations
may
be
recalled
simply
by
selecting
either
the
AM
or
FM
band
with
the
function
selector
buttons,
then
depressing
the
proper
FM/AM
PRESET
MEMORY
button
(23).
To
register
a
station
in
memory,
first
locate
the
station
as
described
earlier,
and
press
the
SCAN
STOP
button
(24).
Then
press
the
MEMORY
button
(22)
and
the
word
MEMORY
wil
l
appear
at
the
right
hand
side
of
the
fre-
quency
display
(33).
Within
5
seconds
after
pressing
the
MEMORY
button
(22)
press
any
of
the
6
AM/FM
PRESET
MEMORY
buttons
(23)
to
store
a
station
in
memory.
To
recall
a
station
from
the
memory
at
any
time,
simply
select
the
proper
function
(FM
or
AM)
and
press
the
appro-
priate
FM/AM
PRESET
MEMORY
button
(23).
Any
time
any
of
the
FM/AM
PRESET
MEMORY
buttons
(23)
is
pressed,
and
the
MEMORY
button
(22)
is
also
pressed,
the
previously
registered
station
wi
l
l
automatical
ly
be
cancelled
and
the
new
one
registered.
Whenever
the
receiver
is
turned
on,
it
wi
l
l
automatically
tune
to
the
last
station
you
l
istened
to,
regardless
of
whether
that
station
was
registered
in
memory
or
not.
When
recal
l
ing
stations
from
the
memory,
the
FM/AM
PRESET
MEMORY
push
buttons
should
not
be
pushed
in
rapid
succession.
There
should
be
at
least
a
1
second
interval
between
the
selection
of
each
station.
Note:
If
power
to
hk1680
is
cut
for
any
reason,
a
bat-
tery
backup
system
will
activate
to
prevent
preset
stations
from
being
cancel
led
from
the
memory.
Momentary
power
cuts
will
not
affect
the
memory.
However
we
recommend
that
you
do
not
connect
the
hk1680
to
an
outlet
that
may
inadvertently
be
turned
off.
Otherwise
excessive
battery
drain
may
occur.
ODD
(9kHz)/EVEN
(10kHz)
selector
The
ODD
(9kHz)/EVEN
(10kHz)
SELECTOR
(54)
is
used
for
matching
the
tuning
step
of
your
hk1680
with
the
frequency
step
of
the
AM/FM
stations
in
your
area.
With
the
selector
placed
in
the
ODD
(9kHz)
position,
tuning
step
of
the
hk1680
is
set
to
9kHz
for
AM
broad-
casting;
it
also
sets
tuning
step
for
FM
broadcasting
to
50kHz
automatically.
Setting
it
in
the
EVEN
(10kHz)
position
sets
the
tuning
step
to
10kHz
for
AM
and
200kHz
for
FM
broadcasting.
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