Harman Kardon HK300XM Owners Manual - Page 7

bias/equal

Page 7 highlights

Memory rewind The 300XM incorporates a special memory rewind that helps you locate a preset point on the tape automatically. If you wish to return to a specific point on the tape, press the TAPE COUNTER RESET button (17) at that point, resetting the TAPE COUNTER (16) to "000:" To return to this point automatically at any time, simply press the MEMORY pushbutton (15) before you press the REWIND BUTTON (10). The tape will automatically stop when the TAPE COUNTER (16) reaches "000:" Note: The memory feature on the 300XM retains only one preset point at a time-selecting a new preset point clears the memory of the previous selection. Electronic Auto Search With the Electronic Auto Search system engaged, the deck will automatically scan a tape, in the fast forward mode, and play back eight seconds of music from each selection until the proper one is found and the system is disengaged. To engage the system, press the ELECTRONIC AUTO SEARCH button (3). The deck will scan to the next blank space between selections, then automatically switch to the playback mode. If the system is not disengaged by pressing the PLAY button (11) or STOP button (13), the deck will automatically shift back to the fast forward mode and repeat the process, scanning and sampling, until the end of the cassette. Note: For the Electronic Auto Search system to function properly, a minimum of 2 seconds of blank space must be left between recorded selections. Bias/equalization The 300XM is equipped to play and record all types of tape formulations presently available, including the new metal tapes. To get the best possible performance from the tape you're using, choose the appropriate button from the BIAS/ EQUALIZATION pushbuttons (22). "Low noise" (LN) for ferric tapes: FeCr for Ferrichrome tapes: CrO2 for chromium dioxide tapes: metal for metal tapes. Bias fine trim For optimum recording, each brand and formulation of tape requires minor adjustment of bias trim. To set the trim, insert a blank tape and select the proper bias/equalization setting. Dolby NR and Dolby HX shall be switched off. Using no program source, press the PLAY (11) and RECORD (8) buttons, and while the deck is recording, press and hold the RECORD CALIBRATION TONE button (28). Now rewind and replay the recording, note the reading of the PEAK LEVEL INDICATORS (18). After you have noted the level of the record calibration tone on the peak level indicators, press the PLAY (11) and RECORD (8) buttons again and hold the BIAS TONE button (27). Now rewind and replay the recording of the tone while holding the BIAS TONE button in. If the reading of the bias tone is lower than the reading of the record calibration tone, rotate the BIAS FINE TRIM knob (32) clockwise (hiboost). If the reading of the bias tone is higher than the reading of the record calibration tone, rotate the BIAS FINE TRIM knob (32) counterclockwise (hi-cut). Each setting is correct only for the brand and formulation of tape in use. If you continue to use the same brand and formulation, readjustment is not necessary. But new adjustments should be made for different tapes. Record calibration For best results, the RECORD CALIBRATION set screws (29) should be adjusted for each formulation and brand of tape. To set the calibration, insert a blank tape and select the proper bias/equalization setting. Using no program source, press the PLAY (11) and RECORD (8) buttons, and while the deck is recording, press and hold the RECORD CALIBRATION TONE button (28). Now rewind and replay the recording of the tone holding the RECORD CALIBRATION TONE button (28) in while listening. If the PEAK LEVEL INDICATORS (18) read 0 dB, record calibration adjustment is complete. If not, adjust the RECORD CALI BRATION set screws (29) (clockwise to increase the readings, counterclockwise to decrease them) and repeat the process until the reading is 0 dB. Note: Some inexpensive tape formulations have low sensitivity. With such tape formulations you might encounter difficulty in obtaining 0 dB readings during the above calibrations. In such an event change to a better quality tape. 5

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Memory
rewind
The
300XM
incorporates
a
special
memory
rewind
that
helps
you
locate
a
preset
point
on
the
tape
automatical
ly.
If
you
wish
to
return
to
a
spe-
cific
point
on
the
tape,
press
the
TAPE
COUNTER
RESET
button
(17)
at
that
point,
resetting
the
TAPE
COUNTER
(16)
to
"000:"
To
return
to
this
point
automatically
at
any
time,
simply
press
the
MEMORY
pushbutton
(15)
before
you
press
the
REWIND
BUTTON
(10).
The
tape
wil
l
auto-
matical
ly
stop
when
the
TAPE
COUNTER
(16)
reaches
"000:"
Note:
The
memory
feature
on
the
300XM
retains
only
one
preset
point
at
a
time
—selecting
a
new
preset
point
clears
the
memory
of
the
previous
selection.
Electronic
Auto
Search
With
the
Electronic
Auto
Search
system
engaged,
the
deck
wi
ll
automatical
ly
scan
a
tape,
in
the
fast
forward
mode,
and
play
back
eight
seconds
of
music
from
each
selection
until
the
proper
one
is
found
and
the
system
is
dis-
engaged.
To
engage
the
system,
press
the
ELECTRONIC
AUTO
SEARCH
button
(3).
The
deck
wi
ll
scan
to
the
next
blank
space
between
selections,
then
automatically
switch
to
the
playback
mode.
If
the
system
is
not
disengaged
by
pressing
the
PLAY
button
(11)
or
STOP
button
(13),
the
deck
wil
l
automatical
ly
shift
back
to
the
fast
forward
mode
and
repeat
the
process,
scanning
and
sampling,
until
the
end
of
the
cassette.
Note:
For
the
Electronic
Auto
Search
system
to
function
properly,
a
minimum
of
2
seconds
of
blank
space
must
be
left
between
recorded
selections.
Bias/equalization
The
300XM
is
equipped
to
play
and
record
al
l
types
of
tape
formulations
presently
avai
lable,
including
the
new
metal
tapes.
To
get
the
best
possible
performance
from
the
tape
you're
using,
choose
the
appropriate
button
from
the
BIAS/
EQUALIZATION
pushbuttons
(22).
"Low
noise"
(LN)
for
ferric
tapes:
FeCr
for
Ferrichrome
tapes:
CrO
2
for
chromium
dioxide
tapes:
metal
for
metal
tapes.
Bias
fine
trim
For
optimum
recording,
each
brand
and
for-
mulation
of
tape
requires
minor
adjustment
of
bias
trim.
To
set
the
trim,
insert
a
blank
tape
and
select
the
proper
bias/equal
ization
setting.
Dolby
NR
and
Dolby
HX
shall
be
switched
off.
Using
no
program
source,
press
the
PLAY
(11)
and
RECORD
(8)
buttons,
and
while
the
deck
is
re-
cording,
press
and
hold
the
RECORD
CALI-
BRATION
TONE
button
(28).
Now
rewind
and
replay
the
recording,
note
the
reading
of
the
PEAK
LEVEL
INDICATORS
(18).
After
you
have
noted
the
level
of
the
record
cal
ibration
tone
on
the
peak
level
indicators,
press
the
PLAY
(11)
and
RECORD
(8)
buttons
again
and
hold
the
BIAS
TONE
button
(27).
Now
rewind
and
replay
the
recording
of
the
tone
while
holding
the
BIAS
TONE
button
in.
If
the
reading
of
the
bias
tone
is
lower
than
the
reading
of
the
record
cal
ibration
tone,
rotate
the
BIAS
FINE
TRIM
knob
(32)
clockwise
(hi
-
boost).
If
the
reading
of
the
bias
tone
is
higher
than
the
reading
of
the
record
cal
ibration
tone,
rotate
the
BIAS
FINE
TRIM
knob
(32)
counter-
clockwise
(hi
-cut).
Each
setting
is
correct
only
for
the
brand
and
formulation
of
tape
in
use.
If
you
continue
to
use
the
same
brand
and
formulation,
read-
justment
is
not
necessary.
But
new
adjustments
should
be
made
for
different
tapes.
Record
calibration
For
best
results,
the
RECORD
CALIBRATION
set
screws
(29)
should
be
adjusted
for
each
formulation
and
brand
of
tape.
To
set
the
calibration,
insert
a
blank
tape
and
select
the
proper
bias/equalization
setting.
Using
no
program
source,
press
the
PLAY
(11)
and
RECORD
(8)
buttons,
and
whi
le
the
deck
is
re-
cording,
press
and
hold
the
RECORD
CALI-
BRATION
TONE
button
(28).
Now
rewind
and
replay
the
recording
of
the
tone
holding
the
RECORD
CALIBRATION
TONE
button
(28)
in
whi
le
listening.
If
the
PEAK
LEVEL
INDICATORS
(18)
read
0
dB,
record
calibration
adjustment
is
complete.
If
not,
adjust
the
RECORD
CALI
-
BRATION
set
screws
(29)
(clockwise
to
in-
crease
the
readings,
counterclockwise
to
de-
crease
them)
and
repeat
the
process
until
the
reading
is
0
dB.
Note:
Some
inexpensive
tape
formulations
have
low
sensitivity.
With
such
tape
formula-
tions
you
might
encounter
difficulty
in
obtaining
0
dB
readings
during
the
above
calibrations.
In
such
an
event
change
to
a
better
qual
ity
tape.
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