Luxman L-190 - Page 4

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1. AC Power Switch
Press
alternately
to
switch
on
and
off,
First,
the
indicator
lights
up
when
the
switch
is
depressed,
and
then
the
time
delay
muting
circuit
is
turned
on,
putt-
ing
the
amplifier
into
perfect
operational
condition
in
about
3
seconds.
2. Headphone Jack
Connection
of
a
stereophonic
headphone
to
this
jack-allows
private
listening.
Output
signals
are
always
available.
When
the
headphone
is
inserted
to
this
jack,
output
to
the
speaker
systems
Is
automatically
cut
off.
3. Tone-in Switch
When
the
switch
is
depressea,
the
tone
control
cir-
cuit
ig
activated.
In
this
condition,
the
tone
controls
are
put
into
operation,
In
the
“orotruded”
position,
the
tone
control
circuitry
is
bypassed
to
provide
flat
frequency
response.
4. Low Cut Filter
When
this
button
is
depressed,
a
bass
roll-off
occurs
at
70
Hz
at
the
rate
of
—6
dB/oct.
This
filter
elimin-
ates
low
frequency
noises.
5. High Cut Filter
When
this
button
is
depressed,
the
amount
of
high
frequencies
is
reduced
at
the
rate
of
—6
dB/oct,
at
7
kHz
This
filter
is
convenient
to
remove
tape
hiss,
disc
scratch
noise,
etc.
6.
Mode
Selector
Button
Use
this
button
to
select
reproduction
modes
such
as
Stereophonic
or
Monaural,
When
the
button
ts
de-
pressed
reproduction
is
made
in
monaural
mode,
7.
Loudness
Button
When
this
button
is
depressed,
compensation
of
low
frequency
range
is
realized
according
to
the
reproduc-
tion
level.
This
is
useful
when
listening
at
low
level.
2
8. Tape Monitor Button
When this button is depressed, playback is possible
either
from
“TAPE-1"
or
“TAPE-2".
This
is
coupled
to
the
Tape
Selector
Button,
and
for
the
tape
monitor-
ing,
it
is
necessary
to
select
the
deck
by
the
T
ape
Selector.
Note: If this switch is kept unpressed in the ‘‘protrud-
ed’'
position,
no
sound
playback
Is
possible
from tape recorder,
9. Tape Selector Button
This button is provided to select two tape decks
connected.
When
the
button
is
kept
unpressed
in
the
“orotruded”
position
(DECK-1),
reproduction
of
a
tape
deck
is
feasible
from
Monitor-1
terminal,
When
it
is
depressed
(DECK-2),
reproduction
from
Monitor-
2
terminal
is
feasible.
This
button
is
coupled
to
the
Tape
Monitor
Button,
and
therefore
when
reproduc-
tion
from
tape
deck
is
required,
it
Is
necessary
to
de-
press the Tape Monitor Button.
10, Tape Dubbing Switch (REPRINTING)
Tape
dubbing
is
possible
with
this
button.
Depress
the
button,
and
playback
signals
for
TAPE-2
can
be
copied
on
TAPE-1.
While
in
the
dubbing
process,
it
is
possible
to
monitor
with
the
Tape
Monitor
Button.
Except
when
reprinting
a
tape,
this
button
should
be
kept
unpressed.
This
reprinting
circuit
is
independent
and
reproduction
of
other
sources
such
as
record
or
tuner
is
possible
during
tape
dubbing.
11. Balance Control
The
volume
balance
between
right
and
left
channels
can
be
adjusted
by
this
control,
Turn
it
in
the
clock-
wise
direction
(rom
the
center
click
position,
and
the
volume
level
of
the
left
channel
is
reduced.
Converse-
ly,
a
counter-clockwise
turn
causes
decrease
of
volume
at
the
right
channel.
When
the
volume
of
both
chan-
nels
is
balanced,
monaural
playback
sound
comes
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from the center of right and left speakers. Usually
this point is obtained at the center click point.
12. Volume Control
This knob controls volume, Clockwise turn boosts
volume, while counter-clockwise rotation decreases
and finally cuts off volume.
13. Input Selector Switch
This knob selects desired program sources (phono
subsonic, phono, aux/DAD tuner). This switch tn-
corporates the ‘‘phono subsonic” position {at 15 Hz,
—6
dB/oct.)
which
is
useful
to
remove
ultra
low
fre-
quency
noises
caused
by
record
warp,
phonomotor’s
rumble etc at the time of playback from record disc.
14. Operation Indicator
Press in the AC Power Switch and this lamp light
up, which shows that the electric current is on,
15. Treble Control
A clockwise turn of this knob boosts the treble re-
sponse, while a counter-clockwise turn decreases the
treble, The flat frequency response is obtained in the
center of rotation angle.
16. Bass Control
A clockwise turn of the control boosts the bass re-
sponse, and a counter-clockwise turn decreases the
bass. It yields a flat frequency response when set to
the center of rotation.
17. Earth Terminal (GND)
Connect the earth (ground) Jead wire of the record
player (from motor or pick-up arm) to ground the
amplifier,
Especially,
when
making
A/B
listening
test,
common
grounding
is
effective
for
elimination
of
thump
noises
at
the
time
of
selecting
amplifiers.