4.
Set the controls on the 4-channel amplifier in
CONNECTING
T E
C.
-4008
accordance
with
the manufacturer's instruc-
Turn
off
the Model CD-400B and any equipment
that
will
be
connected
to
it
before making any
connections. The CD-400B must
be
used
with
a
turntable or changer equipped
with
a cartridge
designed
for
CD-4 records.
1.
Connect the turntable or changer
to
the rear
panel
of
the CD-400B
with
the special audio
cables recommended
by
the cartridge
manu-
facturer. Using any other cable may seriously
degrade the performance
of
the CD·400B.
TURNTABLE/CHANGER
CD-400B
LEFT
OUTPUT
to
lEFT
PHONO
RIGHT
OUTPUT
to
RIGHT
PHONO
GROUNDING
WIRE
to
CHASSIS
GROUND
2.
Using standard shielded audio cables
with
phono plugs make the following connections.
4·CHANNEL
AMPLIFIER
CD·400B
FRONT
CD·4/AUX
L
to 4
CHANNEL
OUT
FRONT
l
FRONT
CD-4/AUX
R
to
4 CHANNel
OUT
FRONT
R
REAR
CD-4/AUX
L
to
4
CHANNEL
OUT
REAR
L
REAR
CD·4/AUX
R
to
4 CHANNel
OUT
REAR
R
PHONO
IN
LEFT
to
2 CHANNEl
DI-
RECT
OUT
lEFT
PHONO
IN
RIGHT
to
2
CHANNEL
01·
RECT
OUTRJGHT
3.
A discrete 4-channel playback device (0-8
cartridge player, 4-channel discrete reel-to-reel
tape deck, etc.) may
be
connected
to
the CD-
400B using standard shielded audio cables
with
phono plugs
as
follows:
DISCRETE
4-CHANN.El
CD-400B
PLAYBACK
DEVICE
LEFT
FRONT
or
L F
or
CHANNEL
1
or
TRACK
1
to
FRONT
AUX
l
LEFT
REAR
or
L R
or
CHANNEL
2
or
TRACK
2
to
REAR
AUX
l
RIGHT
FRONT
or
R
For
CHANNEL
3 orTRACK 3
tp
FRONT
AUX
R
RIGHT
REAR
or
R R
or
CHANNEL
4
orTRACK
4
to
REAR
AUX
R
tions.
5.
Set the CD-400B's
front
panel MODE push-
switch
to
the 4 CH
AUTO
position.
6.
Set the
front
panel SELECTOR pushswitch
to
the PHONO position.
7. Set the rear panel DIRECT
OUT
switch
to
OFF.
8.
Connect
the
AC line cord
to
an
AC
outlet
providing the AC voltage and frequency speci-
fied on
the
rear panel serial number nameplate.
Turn on the turntable,
CD-40GB
and 4-channel
amplifier.
ADJUSTMENTS
Before the Model CD·400B
can
properly demod-
ulate CD-4 records, a few simple adjustments
must
be
made.
The following adjustment procedure should be
performed whenever a new cartridge or stylus
is
installed.
1.
Decrease
the
front
channel volume on the
'....t
main amplifier
so
that
only
the rear speakers
can
be
heard.
2.
Play the CD-4 ADJUSTMENT TONE band
of
the test record.
3. Adjust the rear panel
LEFT
SEPARATION
CONTROL
for
minimum
sound level
from
the
left
rear speaker.
4.
Play the CD-4 ADJUSTMENT TONE band
of
the test record.
5.
Adjust the rear panel
RIGHT
SEPARATION
CONTROL
for
minimum sound
from
the right
rear speaker.
6.
PlaytheCHANNELBALANCE
ADJUSTMENT
TONE band
of
the test record and using
the
BALANCE
CONTROLS
of
the main amplifier,
adjust
the
relative sound level
of
each
of
the
four
channels
to
achieve a satisfactory
four
channel balance.
NOTE: The CD-400B contains a special
circuit
to
control
the
lock
range
of
the carrier
-.t
--
detector and thereby optimize its per·
formance. No adjustments
for
carrier
level (band
2
of
the supplied test record)
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