Luxman 308 - Record Player; Signal Paths

Record
Player
Connections:
The player has 2 cords with pin plugs at their ends for both right
and
left
channels.
Connect
the
pin
plugs
to
the
input
terminals
of
this
amplifier
(PHONO-1
(24),
PHONO-2
(26).
The
player's
earth
lead
can
be
connected
to
the
GND
terminal
(22).
The
player's
power
flex
can
be
connected
to
the
extra
power
outlet
(41) of the amplifier.
This amplifier is provided with 2 input terminals (PHONO-1
&
PHONO-2)
to
be
selected
by
the
input
selector
switch.
This
Is
useful
for
comparison
or
using
two
record
players.
For
use
of
one
player, either of the two input terminals can be selected. But in
case
MM-type
cartridge
(Moving
Magnet)
is
used,
it
is
advisa-
ble
to
use
PHONO-1,
since
its
impedance
can
be
varied
(using
the
impedance
selector
at
the
bottom)
to
give
a
proper
load
to
the cartridge.
Bax fo}: BY LUX COMP JAPAN pPHONO)
SERIAL NO.
TO L 7
RECORD
Lo
|
PLAYER R ;
IMPEDANCE
DECK-1
Signal Paths:
Put the disc on the turn-table, switch on the phono motor,
and set the stylus on the groove of the disc. Then recorded signals
begin to be fed to the amplifier. First, the signals fed to the
amplifier through PHONO terminals are brought to the equalizer
section, where recorded signals are restored to the original fre-
quency curve. Incidentally, this equalizer curve has been
standardized to, the RIAA curve. The equalized signals are then
fed to the input selector switch (function switch). If this switch
is not set at PHONO position, the signals are blocked here and
no amplification is possible.
After equalization, the signals are divided into two channels
at sufficiently low impeaance (about 1002 to prevent possible
high frequency attenuation caused by long cables or floating
-—10—
capacitance) by the emitter-follower stage annexed at the last
portion of the equalizer section. From here, one line goes to
the REC OUT terminal, and the other to the tape monitor switch.
If the Monitor Switch (12) is set at the “SOURCE” position,
the signals are sent to the mode ‘selector switch, balance
and
volume
controls,
but
if
at
the
‘“-DECK-1"
or
“DECK-2”
po-
sition,
the
signals
are
stopped
at
the
tape
monitor
terminals.
Except
during tape playback, the monitor switch must be kept at the
“SOURCE”
position.
But
when
the
input
signals
are
fed
to
PHONO
or
AUX
terminals,
recording
output
is
always
obtainable
regardless of the position of the monitor switch. Then the signals
are
sent
to
the
volume
contro!
through
the
mode
selector
and
balance control.
Such
controls
as
Linear
Equalizer,
Low-cut
filter,
High-cut
filter,
Attenuator,
Low
booster,
and
Tone
controls
are
for
flexi-
ble
and
diversified
adjustment
of
playback
sound
and
do
not
block
the
signals
completely.
PREOUT MAIN IN
As long as the pre-main Jumper connector is hooked, the
signals
reach
the
speaker
circuits
amplified
by
the
main
ampli-
fier. Sound reproduction from speaker systems is thus realized
if the Speaker Selector switch is set at the position correspond-
ing
to
the
speaker
terminals
to
which
the
speakers
are
connected.
Playback
Put a disc on the turn-table for playback. As the volume
control is turned clockwise, playback sound comes from the
speakers. As explained above, playback is possible regardless
of the position of the Mode Selector, etc.. Input Selector Switch
(15), Monitor Switch (12), Pre-Main Amplifier Connection
Jumper, Speaker Switch (1) and Volume Control! (20) should
be set at the correct positions. After all preparations are com-
pleted, check if the volume levels on both right and left speakers
are identical. If different, adjust them with the Balance Control.
For Stereophonic playback, set the Mode Selector Switch to the
STEREO position.