Marantz CD-400B User manual
v
Model
CD-400B
CD-4
••••.
alll
..
Disc
Demodulator
--~
MARANTZ
CO;,
INC.·
P.O.
BOX
99·
SUN VALLEY,
CALIFORNIA·
91352
A WHOLLY-OWNED SUBSIDIARY
OF
SUPERSCOPE INC., SUN VALLEY, CALIFORNIA 91352
'WARRANTY'
'Marantz: Company. Inc., proudly warrants
YO!-"
Ma
...
ntt
product
to
.befree
ofmanufaeturing
defects
inmateriafand
workman,ship
as
follows: .
From .date,
of
purchase.
. .
PARTS·
3
Electronic Components and. Receivers .
LA"
BO'R"
_ years
Syears
"
PARTS"
3 years
·...eadphones LABOR,
3years
PARTS.
3 years
4-Channld-
Remote Control LABOA- . 3 '1ears
PARTS'·
3 years
P1ug~in
Matrix
Dec:oders
... LABOR'
-3
years
PARTS·
5 years
SpeakQfS afld Cabinets LABOR -5 years
TO VALIDATE YOUR WARRANTY;
YOU
MUST
Fill
OUT
AND
MAIL THE WARRANTY
REG-
ISTRATION CARD TO MARANTZ COMPANY.
INC.~
P.
O.BOX
99,
SUN
VALLEY, CALIFORNIA
91352, WITHIN TEN
DAYS
FOllOWING
THE DATE OF PURCHASE.
F()r'
Warranty repair,
send
this produ.ct,to Marantz COmpa"y, lnt:,
8150
Vineland Avenue, Sun Valley,
Cillifornia 91352,01'
to
an AUTHORIZED. Matantz Service Station. AllShipping charges must
be
prepaid.
Marantz·will pay returrishtpPlngehatges
toanydeilignatedpoint
within the United States. .
This
VVarranty
is
void if
the
serial number has been altered
or
removed;
if
the
prowctk
modified
or
repaired in any manne{ whicb Marantz believes may affect
the
reliabitityof
the
product;
if
the
product
is
not
OPerated in accordance witll
theinstruetion
manual,
Marantz shall ha'le no liability whatsoever for consequential damages. The sole responsibility
of
Marantz
Company, Inc., under this Warranty shall be linlited to the repair
of
the product. or replacement ther.eof,
in
the sole discretion
of
Marantz C()mpariy.
InC.
EXCEPT
TOTHE
EXTENT THATAPPLICABLE
LAW
t'RECllJOES A DISCLAIMER OFWARRANTY,
THERE
IS
NO
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
WITH
REsPECT .
TO
THIS PRODUCT.
NOR
ARE THERE
ANY
OTHER WARRANTIES
WHICH
EXTENT BEYOND'
THE
PROVISIONS
OFTHISWARRAN'tY.
. .
8150
Vineland Avenue,
Sun.
Valley,
Calijor'nia
91352'
REGISTRATION FOR
MARANTZ
3-YEAR GOLDEN
WARRANTY
Model Purchased
Date
of
Purchase
_..--_
Place
of
Purchase
Address
City
_ _ State _
Serial Number
~
The above
information
becomes
your
permanent record
of
a valuable purchase.
It
should
be
promptly
filled
in
at
the
same
time
that
you
fill
in and mail the warranty registration
AC
Line Operation reply card
to
Marantz. This
information
provides a valuable
WARNING:
TO
PREVENT
FIRE
OR
SHOCK
HAZARD,
00
insurance record and must also
be
referred
to
should you
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
MOISTURE.
have any correspondence
with
Marafitz.
I
FOR
WORD
To obtain
optimum
performance and enjoyment
from
the Model CD-400B,
please
study these in-
structions and
follow
the step-by-step procedures
carefully.
This manual
is
divided
into
two
parts. The
first
covers installation and operation in simple, non-
technical
language.
The second describes the
Model CD-400B in more technical detail.
For quick identification
of
the controls
and
con-
nections, references
to
these
are
printed in BOLD-
FACE
TYPE.
may institute a claim against the carrier
for
shipping
damage.
Save
the carton and all packing
material
as
evidence
of
damage
for
their
inspec-
tion. Should
assistance
be
required, the Marantz
Company
will
cooperate
fully
in
assisting
your
claim.,
Please
fill
out
and
mail the Warranty Registration
Card
as
soon
as
possible. The Marantz 3-year
Golden Warranty
will
not
go
into
effect until the
Marantz Company receives the registration card,
which
was
packed
in
the carton
with
your
Model
CD-400B.
TABLE
0 C
NTENTS
GENERA
DESCRIP
10
Your
Marantz Model CD-400B
is
a simple
to
operate demodulator
for
obtaining
four
discrete
channels from CD-4 records. The Model CD-400B
incorporates
an
Automatic Noise Reduction Cir-
cuit
to
minimize record noise
without
affecting
frequency
response,
and
an
automatic
30
kHz
Connecting the CD-400B
Adjustments
Front
Panei
Features
Power Indicator
Power Switch
Selector Switch
Mode Switch
Rear
Panel
Features
2
CH
Direct Out Switch and Jacks
2
2
4
4
4
4
4
5
5
carrier level control which selects the
optimum
Phono I
nput
Jacks 5
carrier level for the cartridge being
used.
NoncCD-
Aux
Input Jacks
4 records may
also
be
played through the
CD-
4
CH
Out Jacks
400B
without
affecting their performance. The
Chassis
Ground
5
5
5
CD·400B's controls do
not
have
to
be
adjusted
to
Separation Controls 5
play non-CD-4 records.
When
CD·4 records
are
Line Cord
played and the MODE pushswitch
is
in the
4 CH
AUTO
position, the
RADAR
indicator
will
Operation Notes
illuminate
and
the record
will
automatically
be
demodulated
into
four
discrete channels.
5
6
Functional Description
General Specifications
Service Notes
AFTER
UNPACKIN
Repairs
It
is
advisable
to
retain all original packing
ma-
terial
to
prevent
damage
should'
you wish
to
transport
or
ship the Demodulator (refer
to
page
LIST
FilL S
RATIONS
8
for
repacking
and
shipping instructions),
Please'inspect
your
CD-400B carefully
for
any
signs
of
shipping
damage.
Our very
strict
quality
1.
Connection Diagram
control and professional pride ensure
that
each
2.
Front
Panel
Switches
8
8
8
3
CD-400B
left
the factory in perfect condition.
If
the
unit
is
damaged
or
fails
to
operate, im-
mediately
notify
your dealer.
If
the
unit
was
shipped
to
you directly,
notify
the transportation
company with'out delay. Only you, the consignee,
3.
Rear
Panel
Connection
Facilities and Controls
4.
Cartridge Mounting
5.
Functional Block Diagram
6.
Packing Instructions
5
6
7
8
6
4
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
RR
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)
CD·4
RECORD
PLAYER
OUTPUT
. OUTl'ItT
are therefore necessary. However,
in
ingdistorted
sound and intermittent
extreme cases
of
badly worn discs and 4-channel operation.
If
this
is
the
case,
stylus
or
poorly designed cartridges, the either. a new disc, a new stylus,
or
a
carrier
level
output
may be outside the better cartridge must be secured.
range
of
automatic compensation, caus-
MARANTZ
MODEL
CD-400B
00
FRO"T
LEfT
©
1----------
-
FRO"T
RIGHT@
I"~
0
U
REAR
LEFT
REAR
RIGHT ©
.
©
'-----------'
4·CHANNEL
TAPE
DECK
4·CHANNU
AMPLIFIER
FRONT
PANEL
FEATURES'
POWER INDICATOR
The
POWER INDICATOR illuminates
to
signify
that
the
Model CD-400B
is
on
when
the
POWER
pushswitch is depressed.
POWER SWITCH
The
POWER pushswitch activates
the
Model
CO·400B's power
when
depressed. When
the
push-
switch
is
released,
the
AC
power
is
off.
SELECTOR SWITCH
When
this
switch is
set
to
the
PHONO
position,
the
Model CO-400B
is
set
for listening
to
CO-4,
2-channel,
or
4,channel
matrix
records.
When
set
to
the
AUX position,
any
input
that
has been
connected
to
the
rear
panel
AUX
input
jacks will
be
fed
directly
through
the
CO-400B's
4 CH
OUT
jacks. This permits listening
to
dis-
Figure
2.
Front
Panel
Switches
crete
4-channel
sources
such as an
8-track
tape
deck,
4-channel reel-to-reel
deck,
etc.
MODE SWITCH
4 CH AUTO: When in
the
4
CHAUTO
position,
CO-4
records
will
automatically
be
reproduced
with
four
discrete
channels.
2-channel
records
and
4-channel
matrix
records will
be
reproduced
with
the
left
channel
of
the
record fed
to
the
left
front
and
left rear amps, while
the
right
channel
is
fed
to
the
right
front
and
right rear
amps
..
.
2CH:
When in
the
2 CH POSItIon all records,
including CO-4 records, will be
reproduced
in
the
2-chimnel mode.
Some
2-channet records
may
contain
enough
high
frequency
signals
to
.
render
them
unplayable
in
the
4 CH
AUTO
posi-
tion.lf
this
occurs,
set
the
MODE
switch
to
the
2 CH position.
RADAR: When
the
MODE pushswitch
is
set
to
the
4 CH
AUTO
position,
the
RADAR
indicator
will illuminate
when
a
COA
record
is
being played.
2
CH
01
RECT
OUT
SWITCH
AND
JACKS
When
set
to
the ON position, the PHONO INPUT
signal
is
fed directly
to
the DIRECT
OUT
jacks.
These
jacks may
be
connected
to
the PHONO IN
jacks
of
an
amplifier
as
an
alternate method
for
playing stereo or 4-channel matrix records.
When
set
to
the OFF position, the PHONO INPUT
signal
is
processed
by the CD-400B.
PHONO INPUT JACKS
These
jacks
are
intended
to
be
used
with
a CD-4
magnetic cartridge.
AUX
INPUT JACKS
These
jacks
are
for
connecting any 4-channel high
level source. Manufacturers may
use
different
terminology
for
the
four
channels, and care
should be exercised
to
avoid confusing the chan-
nel
connections. The following
are
examples
of
4·channel nomenclature equivalents:
:JI
LEFT
FRONT
LF-LF-
CHANNEL
1-TRACK 1
LEFT
REAR
LR-LB-
CHANNEL
2-TRACK 2
RIGHT
FRONT
RF-RF-
CHANNEL
3-TRACK 3
RIGHT
REAR
RR-RB-
CHANNEL
4-TRACK 4
Figure
3.
Rear
Panel
Connection
Facilities
and
Controls
4 CH
OUT
JAC
KS
These
high level
output
jacks should
be
connected
to
the
AUX
IN
or
CD-4/AUXjacks on a 4-channel
console amplifier
or
pre-amplifer.
CHASSIS GROUND
This binding post
is
for
the connection
of
the
ground wire
from
the turntable
or
record changer.
SEPARATION CONTROLS
The
LEFT
and
RIGHT
SEPARATION CON-
TROLS adjust channel separation between the
left
front
and
left
rear
and
right
front
and right
rear
speakers
respectively.
See
adjustment section.
LINE
CORD
Connect the AC line cord
to
an
AC
outlet
provid-
ing the AC voltage and frequency specified on the
rear panel serial number nameplate.
5
I
OPERATION
NOTES
,FUNCTIONAL
QESCRIPTION
1. Separation
Adjustment
In
the
CD-4 record two
sigAals
are superimposed
Once
the
separation controls are set
they
on
each wall
of
the
same groove. One
is
the
SUM
should
not
need readjustment until
the
car- SIGNAL
LF
+
La
(or
RF
+
Rs).
The
other
is
a
tridge
and/or
stylus
is
replaced.
30
KHz carrier modulated itl frequency by
the
2.
Anti-Skating DIFFERENCE SIGNAL
LF
-
L8
(or
RF
.:.
Rs).
For
optimum
results
with
the
CD-400B,
the
Referring
to
the
block diagram of Figure 5,
the
anti-skating force
on
the
turntable
should
be
compositesignal picked up
b¥
the
phone
cartridge
carefully adjusted in, accordance with
the
~,
is
first passed through a circuit which provides
manufacturer's instructions. standard RIAA equalization. Its
output
signal
is
3. Cartridges split into
two
different paths: One
path
goes
Only a magnetic cartridge designed for CD-4 through a Low Pass filter
that
lets only
the
sum
reproduction will provide usable playback re- signal through
to
the
·mixing circuit while stop-
sults.
The
cartridge must be
mounted
per- ping
the
carrier.Aseparation
adjustmentis
included
pendicularto
the
record surface. See Figure 4. '
in
this path
to
compensate for
the
variation
:in
The stylus must be
kept
clean. Consult
your
output
level from different cartri.dges.
The
bther
dealer
for
cleaning accessories.
path
.takes
the
signal through a
High
Pass Filter
4. Turntable Leads which blocks
the
sum
signal,
but
allows
the
Only coaxial
audio
cables designed for CD-4 modulated high frequency carrier
-to
be presented
use should be used. Consult
your
dealer for
the
to
the
FM
Detector,
after
amplification
to
proper type.
the
proper level. There,
the
difference signal
is
recovered (detected) by means
of
a low distortion
5.
TV Interference
A TV
set
located near
the
CDA
record player Phase Locked Loop circuit.
The
30
kHz level
is
may interfere with playback
of
CD-4 discs. automatically adjusted
to
suit
different
types
of
If
this should occur, either
turn
off
the
TV
or
cartridges
and
set-up conditions.
move
the
record player away from
the
TV. The Low Pass filter
that
follows
the
FM
detector
6. Record Care suppresses
any
vestiges of
the
high frequency
CDA records require cleanliness. Keep
them
carrier, leaving only
the
original difference signal.
away from dust, dirt and cigarette smoke.
fn
recording,
the
frequency response
of
the
differ-
Clean
them
with a high quality record clean- ence signal
is
modified
to
improve signal-to-noise
ing device before playing and before storing. ratio and crosstalk. The circuits labelled De-
Do
not
use solvents or water because
they
will
emphasis and
AN
RS
in
the
CD-400B block diagram
increase noise
on
the
discs.
WRONG
\
\
..
\
I
,--
I
I -,
I
V
,
\
I
J RECORD
SURFACE
--
-,
.
are intended
to
restore
the
original response
of
Figure
4.
Cartridge
Mounting
RIGHT
r---WRONG
I
I
CARTRI.DGE
~
I
RECORD
__
..
SURFACE
--:-;-""'-_J
SU
RECORO
AFACE .
90°
a..-_~
the difference signal while
at
the
same
time
reducing noise
and
crosstalk.
When
a CD-4 record
is
played, the Muting/4-CH Radar
circuit
senses
the presence
of
the 30
kHz,
carrier and, by
means
of
its special circuit, turns on the Radar light and
opens the path
for
the difference signals.
If
a
regular stereo record
is
played,
the
same
Muting
circuitshuts
off
the Radar light and the difference
signal path,
so
that
on'ly the
sum
signal (which
contains all the information
necessary
for
stereo
reproduction)
is
allowed
to
reach
the output.
This
same
function
can
be
manually performed
with
an
external pushbutton.
Once the
sum
and difference signals have
been
recovered, the rest
is
simple'
arithmetic. The
Mixing Circuit
adds
and
subtracts these signals
yielding the discrete channels. For example:
(LF + Ls) +
(LF
-La)
= 2
LF.The
other three
channels are derived in a similar manner.
Figure
5.
Functional
Block
Diagram
1JO---oRs
G-ENERAL
SPEC
FICATIONS
Power Requirements
..
120V AC,
50
to
60Hz
Power Consumption ,
..
10
Watts
Dimensions
...
. . . . . . . .
..
Width:
8-1/4
inches
Height: 3-7/8 inches
Depth:
12·314
inches
Weight , Unit Alone:
7.37
lbs.
Shipping:
8.70
lbs.
Figure
6.
Packing
Instructions
SER\JICE
NOTES
REPAIRS
Only
the
most
competent
and qualified service
technicians should
be
allowed
to
service
the
Marantz Model CD-400B.
The
Marantz Company and its warranty station
personnel have
the
knowledge and special equip-
ment
needed for
the
repair
and
calibration
of
this
precision instrument.
In
the
event
of
difficulty, write directly
to
the
factory (to
the
attention
of
the
Technical Service
Department) for
the
name
and
address
of
the
nearest Marantz warranty
or
authorized service
station. Please include
the
model
and
serial
num·
ber
of
the
unit
together with a description
of
the
problem,
If
it should ever be necessary
to
ship
the
unit
to
the
factory
or
authorized service station, pack
the
unit
carefully using
the
original packing
ma-
terial.
If
the
packing material has been discarded,
lost
or
damaged, write
to
the
factory (to
the
attention
of
the
Technical Service Department)
for new packing material. Carton, fillers and
packing instructions
will
be
returned
to
you
at
a nominal charge.
No
unit
should be returned
to
the
factory
wjth~
out
an Authorized Return·· Label, which
the
Marantz Company will supply if
the
description
of
difficulties appears
to
warrant factory service,
Please pack theCD·400B as illustrated
in
Figure
6.
Insure
the
Model CD-400B for its full value. Make
sure
that
your
correct return address
is
on
the
shipping label. Ship
via
a reputable carrier. (DO
NOT
USE
PARCEL POST.)
Be
sure
to
obtain a
receipt from
the
carrier.
The Sound
of
Marantz
is
the
compelling
warmth
of
a Stradivarius.
It
IS a dancing flute, a haughty bassoon
and
the
plaintive
call
of
a lone French horn.
The Sound
of
Marantz
is
the
sound
of
beauty,
and Marantz
equipment
is
designed
to
bring you
the subtle joy
of
its delight.
Wonderfui adventures
In
sound await you
when you discover 'that
the
Sound
of
Marantz
is
the
sound
of
music
at
its very best.
2922851010
PRINTED
IN
JAPAN
This manual suits for next models
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