Pioneer PL-55DX User manual
DIRECT
DRIVE
STEREO
TURNTABLE
PL=-55)DX
OPERATING
INSTRUCTIONS
rE
t
Sees
REex
RES
ER
EZ
Mpionecer
||
|
Pioneer
wishes
to
thank
you
for
deciding
to
purchase
the
PL-55DX,
a
direct
drive
stereo
turntable.
Please
read
this
manual
carefully,
as it
covers
proper
operating
procedures
and
steps
which
will
aid
in
obtaining
maximum
per-
formance
from
this
fine
piece
of
equipment.
FEATURES
DIRECT
DRIVE
Troublesome
belts
and
idlers
are
not
used
A
DC
servo
motor
drives
the
turntable
directly.
Design
of
this
system
limits
transfer
of
vibration
to
the
tonearm
to
an
amazingly
low
level.
PL-55DX
gives
performance
a
cut
above
that
of
comparable
record
players,
and
is
sure
to
satisfy
the
most
exacting
audiophile.
ELECTRONIC
SERVO
CONTROL
Ambient
temperature
does
not
affect
the
speed
of
rotation,
thanks
to
special
electronic
circuitry
which
maintains
the
motor
speed
at
a
constant
value
at
all
times.
A
touch
of
a
button
is
the
only
requirement
for
setting
this
circuitry
into
operation.
Speed
switching
is
simple.
Independent
controls
are
used
for
fine
adjustment
of
33-1/3
and
45
rpm
speeds,
(Fine
adjustment
is
effective
within
+2%
of
the
nominal
speed.)
VERSATILITY
PL-S5DX
plays
all
four-channel
records
...
SQ,
RM
matrix
records
and
CD-4
discrete
records.
Ordinary
two-
channel
stereo
records
played
on
PL-55DX
yield
a
mar-
velous
four-channel
effect.
PL-S5DX
is
sure
to
satisfy
your
listening
requirements.
POSITIVE
TRACKING
New
design
provides
for
simple
adjustment
of
lateral
balance
of
an
S-shaped,
statically
balanced
tonearm
and
includes
an
anti-ska
ing
device.
Stable
tracking
is
guaranteed
in
all
cases,
including
of
course
four-channel
record
playing
and
the
use
of
cartridges
featuring
light
tracking
force.
STABLE
OPERATION
A
fully
automatic
mechanism
linked
to
the
function
lever
provides
extra
smooth
tonearm
operation,
automatic
re-
turn,
and
automatic
interruption.
There
is
never
any
need
for
concern
over
record
or
stylus
damage.
NOVEL
DESIGN
The
outward
appearance
looks
as
well
as
turntable
mecha-
nism
performs,
matching
other
contemporary
stereo
system.
Controls
are
grouped
on
the
right
side,
for
con-
venience.
CONTENTS
Features
Installation
Stereo
System
Structure
Line
Voltage
Assembly
Connection
to
Stereo
Amplifier
Tonearm
Adjustments
Parts
Identification
Dust
Cover
Parts
and
Their
Functions
............:seeeseerere
Operation
Cautions
on
Playing
Four-channel
(CD-4)
Records
Nomenclature
and
Use
Cautions
Points
to
be
Checked
Component
Replacement
Specifications
INSTALLATION
Install
the
PL-55DX
with
the
following
points
in
mind.
e
The
place
must
be
well-ventilated
and
free
from
humidity
and
dust.
e
The
unit
should
not
be
exposed
to
direct
sun-
light.
e
The
unit
should
not
be
placed
near
any
souce
of
heat.
e
The
unit
should
be
placed
as
far
from
the
speaker
systems
as
possible.
2
STEREO
SYSTEM
STRUCTURE
FOUR-CHANNEL
STEREO
SYSTEM
Two-channel
stereo
system
in
which
left
and
right
speakers
are
located
in
front
of
the
listener
give
breadth
and
presence
to
piano,
violin,
and
vocal
sounds.
Four-channel
stereo
systems
in
which
left
and
right
speakers
are
located
both
to
the
front
and
rear
of
the
listener
(see
accompanying
illus-
tration)
add
to
these
effects
“‘depth,’’
giving
you
the
feel
of
a
large
space
with
associated
reflections.
All
of
the
sound
is
there,
natural
and
rich
and
“real.”
Select
a
suitable
four-channel
stereo
amplifier
and
speaker
systems
for
your
PL-55DX
(Fig.
1).
TWO-CHANNEL
STEREO
SYSTEM
Connect
a
suitable
two-channel
stereo
amplifier
and
speaker
systems
as
shown
in
the
accompanying
illustration
(Fig.
2).
NOTES
ON
SYSTEM
STEREO
COMPONENTS
Amplifier
Various
four
and
two-channel
configurations
are
available,
including
integrated
stereo
amplifier,
pre-
main
stereo
amplifiers,
and
preamplifier-power
amplifier
combinations.
Selection
is
of
course
a
matter
of
choice
and
budget.
Pioneer
recommends
that
you
select
a
highly
stable
amplifier
and
matched
speaker
systems,
which
will
insure
a
high
performance
level.
Speaker
System
There
are
two
types
of
speaker
enclosures,
the
bass-reflexed
type
and
the
enclosed
type.
Speakers
come
in
full-range,
two-way,
and
three-way
types.
Again
selection
is
a
matter
of
choice
and
budget.
In
four-channel
systems,
it
is
advisable
to
use
identical
speakers
at
the
four
locations(front
left
and
right,
rear
left
and
right).
In
any
event,
requirements
call
for
matched
front
and
matched
rear
speakers.
Phono
Cartridge
Phono
cartidge
types
include
the
magnetic
type
(moving
coil
type,
moving
magnet
type,
and
in-
duced
magnet
type),
semiconductor
type,
and
photoelectric
type.
If
you
wish
to
use
a
cartridge
other
than
one
furnished
with
the
PL-55DX,
a
four-channel
type
should
be
selected
so
that
you
can
play
CD-4
records.
PIONEER
PL-55DX
SSS}
acuannet
mT
OOr
ey
O
oO
|
STEREO
0:00
0-o
oe0e
AMPLIFIER
(CH-1)
(CH-3)
4-CHANNEL
RIGHT
|
SPEAKER
peated
SYSTEMS
(CH-4)
Fig.
1
PL-55DX
2-CHANNEL
STEREO
AMPLIFIER
SPEAKER
SYSTEMS
LEFT
RIGHT
CHANNEL
CHANNEL
&
Fig.
2
LINE
VOLTAGE
Confirm
the
line
voltage
of
your
house
current
before
turning
the
power
on,
because
your
PL-55DX
may
not
be
conditioned
for
operation
with
your
local
line
voltage.
THE
LINE
VOLTAGE
SELECTOR
PLUG,
provided
inside
the
wooden
base,
can
be
seen
when
the
bottom
plate
is
removed
(Fig.
3).
Your
PL-55DX
is
set
for
operation
at
the
voltage
indicated
by
the
caution
card
enclosed
and/or
on
the
carton
box
when
shipped.
If
your
house
current
voltage
is
different
from
the
set
voltage,
regulate
the
line
voltage
for
operation
by
yourself
as
follows:
1.
Unscrew
a
total
of
10
bottom
plate-held
screws
as
shown
in
Fig.
3.
2.
Remove
the
bottom
plate,
and
you
can
find
the
LINE
VOLTAGE
SELECTOR
PLUG.
8.
The
cut-off
of
the
selector
plug
shows
the
voltage
which
operates
the
unit.
(Perhaps,
it
ought
to
be
different
from.
your
local
line
voltage.)
4,
Pull
out
the
selector
plug,
and
put
it
back
as
indicated
in
cut-off
your
house
voltage
110V,
120V,
130V,
220V,
or
240V
(Fig.
4).
ASSEMBLY
To
prevent
possible
damage
during
transport,
heavy
items
and
delicate
parts
are
packed
separate-
ly.
For
assembling
the
PL-55DX,
first
read
instruc-
tions
through
and
proceed
with
great
care
never
to
touch
the
stopper
near
the
center
shaft
as
follows:
REMOVAL
OF
TONEARM
PACKING
Remove
packing
(white)
holding
the
arm,
by
open-
ing
it
in
the
arrow-indicated
direction
as
shown
in
the
illustration
(Fig.
5).
INSTALLATION
OF
TURNTABLE
PLATTER
Unpack
the
turntable
platter
and
place
it
over
the
center
shaft.
Lay
the
rubber
mat
on
the
turntable
platter.
INSTALLATION
OF
HEAD
SHELL
Fit
the
head
shell
to
the
end
of
the
tonearm,
securing
it
with
the
arm
lock
screw
(Fig.
6).
UL
ey
PL-55DX
UVTNVTUTTTTTETTTT
THT
,
UUUTTNUTA
AUT
TET
a)
To
remove
bottom
plate,
unscrew
a
total
of
10
screws.
Fig.
3
LINE
VOLTAGE
SELECTOR
PLUG
TONEARM
PACKINGS
TAKE
OFF
Fig.
5
LOCK
SCREW
HEAD
SHELL
Fig.
6
INSTALLATION
OF
MAIN
COUNTERWEIGHT
Fit
the
main
counterwight
to
the
after
end
of
the
tonearm.
Thread
it
in
two
or
three
turns
in
the
arrow-indicated
direction
as
shown
Fig.
7.
INSTALLATION
OF
LATERAL
WEIGHT
This
component
is
included
in
the
accessory
parts
box.
Fit
it
to
the
bar
and
secure
the
weight
screw
(Fig.
8).
HEIGHT
ADJUSTMENT
OF
ARM
ELEVATOR
The
arm
elevator
can
be
adjusted
after
loosening
the
little
screw
in
its
side
(Fig.
9).
HEIGHT
ADJUSTMENT
OF
ARM
REST
The
height
of
the
arm
rest
is
adjustable
by
first
loosening
the
screw
in
its
side,
sliding
the
rest
to
the
desired
height,
then
tighten
the
screw
again
(Fig.
10).
e
Readjustment
of
the
arm
rest
and
arm
elevation
is
required
when
a
different
cartridge
is
used.
ARM
REST
Fig.
10
CONNECTION
TO
STEREO
AMPLIFIER
The
cartridge
furnished
with
PL-55DX
is
of
the
induced
magnet
type
(PC-Q1).
Connection
should
be
made
to
PHONO
MAG
of
the
stereo
amplifier.
If
four-channel
(CD-4)
records
are
to
be
played,
make
connections
in
accordance
with
the
four-
channel
amplifier
instructions
manual.
e
Connect
PL-55DX
leads
to
PHONO
MAG
of
the
stereo
amplifier.
Be
sure
to
observe
L(Left)
and
R(Right)
markings
(Fig.
11).
e
The
lead
with
a
split
lug
at
its
end
is
the
ground
lead.
Connect
this
lead
between
the
stereo
amplifier’s
GND
terminal
and
PL-55DX’s
E
terminal
(
Fig.
11
).
NOTE:
If
a
low-output
moving
coil
(MC)
cartridge
is
to
be
used,
it
will
be
necessary
to
add
a
special
matching
transformer
or
an
amplifier
which
has
provision
for
connection
of
this
type
of
cartridge.
PIONGCER
Fig.
9
PL-55DX
AC
CORD
CONNECTION
CORD
i
(L
—CH)
STEREO
pa
AMPLIFIER
ja
R
GROUND
AC
OUTLET
RECEIVER
(R—CH)
TERMINAL
Fig.
11
TONEARM
ADJUSTMENTS
LATERAL
BALANCE
Refer
to
the
accompanying
illustration.
Make
sure
that
the
lateral
weight
is
10
~
15mm
from
the
end
of
the
bar.
This
setting
also
applies
when
nonstand-
ard
cartridges
are
used.
Make
sure
that
the
attitude
of
the
turntable
itself
is
horizontal
(Fig.
12).
HORIZONTAL
BALANCE
Set
the
anti-skating
device
knob
to
“0”.
Remove
the
stylus
cover.
Turn
the
main
counterweight,
obtaining
horizontal
balance
for
the
tonearm.
(That
is,
locate
the
main
counterweight
so
that
the
tonearm
remains
in
a
horizontal
attitude
with
respect
to
the
head
and
weight
ends.)
Now
turn
the
tracking
force
counter
ring
at
the
forward
end
the
main
counterweight,
matching
the
0-position
to
the
index
line
(black)
inscribed
on
the
tonearm.
Note
that
the
main
counterweight
must
be
held
at
this
time,
to
keep
it
from
turning
as
the
counter
ring
is
turned
(Fig.
13).
TRACKING
FORCE
Earlier
adjustment
set
stylus
pressure
to
zero.
At
this
time,
turn
the
main
counterweight
to
the
position
at
which
the
tracking
force
as
indicated
by
markings
on
the
counter
ring
is
that
desired.
(Turning
the
main
counterweight
carries
along
the
counter
ring.)
The
counter
ring
is
graduated
in
0.5g
increments
and
provides
4
grams
of
adjustment
per
turn
(Fig.
14).
ANTI-SKATING
FORCE
Turn
the
anti-skating
device
knob
to
the
position
which
matches
tracking
force
(Fig.
15).
Example:
If
tracking
force
is
1.8g,
set
this
knob
to
1.8.
What
is
“
Anti-skating’’?
As
the
record
groove
moves
in
relation
to
the
stylus
it
exerts
a
force
on
the
stylus
which
pushes
it
toward
the
center
shaft
of
the
record.
This
is
called
“‘skating
force”
and
will
actually
cause
the
stylus
to
jump
out
of
the
groove
and
“skate”’
if
it
is
too
strong.
Even
when
this
does
not
occur,
the
force
distorts
the
sound
response.
The
anti-skating
device
is
designed
to
cancel
this
force.
10
~
15mm
LATERAL
WEIGHT
Fig.
12
MAIN
COUNTERWEIGHT
TRACKING
FORCE
COUNTER
RING
Fig.
13
TRACKING
FORCE
COUNTER
RING
Fig.
14
ANTI-SKATING
DEVICE
KNOB
INDEX
LINE
|
|
Fig.
15
PIONEER
PARTS
IDENTIFICATION
DUST
COVER
°
RUBBER
MAT
TURNTABLE
PLATTER
STROBO
SCOPE
MAIN
COUNTERWEIGHT
ARM
REST
TONE
ARM
HEAD
SHELL
FUNCTION
LEVER
CENTER
SHAFT
SCREWDRIVE
OVERHANG
GAUGE
DUST
COVER
See
the
accompanying
illustration.
Align
the
dust
|
!
A
cover
(made
of
acryl)
to
turntable
hinges
and
shift
HINGES
it
to
the
side
to
lock
it
in
place
(Fig.
16).
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SNOILONNA
YISHL
GNV
SLYVd
CAUTIONS
ON
PLAYING
FOUR-CHANNEL
(CD-4)
RECORDS
TRACKING
FORCE
ADJUSTMENT
The
cartridge
employed
has
frequency
response
superior
to
that
of
an
ordinary
stereo
phono
cartridge,
in
order
to
provide
faithful
reproduction
of
the
indicated
CD-4
record
grooves.
Therefore,
the
permissible
range
of
tracking
force
is
quite
narrow.
Tracking
force
failling
outside
the
ac-
ceptable
range
will
cause
poor
sound
reproduction
quality.
Always
use
only
the
specified
tracking
force.
INSTALLATION
OF
CARTRIDGE
AND
HEAD
SHELL
The
cartridge
and
head
shell
must
be
installed
so
that
the
stylus
is
level
to
the
record
surface.
Check
this
point
carefully.
CLEANING
DISK
The
four-channel
(CD-4)
record
has
delicate
record
grooves,
Keeping
the
disk
clean
is
even
more
important
than
in
the
case
of
ordinary
stereo
records,
as
a
result.
Using
a
quality
cleaner,
carefully
clean
CD-4
records
before
and
after
use.
Do
not
use
spray
type
solvents
or
water
for
cleaning.
CLEANING
STYLUS
A
certain
amount
of
dirt
will
accumulate
at
the
stylus
tip
during
the
playing
operation.
This
ac-
cumulation
will
harden
if
it
is
left
in
place,
de-
teriorating
reproduced
sound
and
eventually
inter-
fering
with
reproduction
itself.
Clean
the
stylus
tip
each
time
you
use
the
turntable.
POINTS
TO
BE
CHECKED
HUM
Hum
is
often
caused
by
power
line
frequency,
either
from
poor
grounding
or
poor
connections
as
follows:
e
Turntable
ground
not
connected
to
amplifier
ground.
e
Turmtable
output
cable
in
close
proximity
to
amplifier
power
transformer.
e
It
may
be
possible
to
eliminate
hum
by
reversing
the
AC
cord
at
the
power
line
socket.
NOMENCLATURE
AND
USE
CAUTIONS
HORIZONTAL
ATTITUDE
Failure
to
position
the
turntable
in
a
horizontal
attitude
will
lead
to
a
number
of
problems.
Check
positioning.
ALWAYS
KEEP
STYLUS
CLEAN
Accumulation
of
dirt
particles
at
the
stylus
tip
deteriorates
the
quality
of
reproduced
sound.
Always
keep
stylus
tip
clean
with
a
soft
brush.
Always
keep
record
surfaces
clean
with
a
suitable
record
cleaner
before
each
play,
otherwise
delicate
stereo
sound
quality
will
be
deteriorated.
Never
touch
the
stylus
tip,
as
the
stylus
can
be
damaged.
VIBRATION
As
the
cartridge
used
has
a
light
tracking
force,
it
is
imperative
that
the
turntable
be
located
so
as
to
be
free
of
the
effects
of
vibration.
Keep
the
turntable
well
away
from
speaker
systems
and
other
sources
of
vibration.
INTERNAL
WORKINGS
The
PL-55DX
is
a
precision
device.
Refrain
from
removing
the
cover
and
turntable
from
“tamper-
ing”
with
internal
parts.
ACOUSTICAL
FEEDBACK
Feedback
occurs
when
speaker
vibration
is
sensed
by
the
pickup
cartridge.
Resulting
sound
takes
the
form
of
a
hum.
Raising
the
sound
level
causes
the
stylus
to
jump.
To
eliminate
this
problem,
separate
the
turntable
and
speakers
to
a
greater
extent.
10
COMPONENT
REPLACEMENT
STYLUS
The
standard
cartridge
PC-Q1
has
a
diamond
stylus
(PN-Q1).
Nominal
service
life
of
the
stylus
is
400
to
600
playing
hours.
Attempting
to
use
a
stylus
beyond
this
limit
will
result
in
record
damage
and
poor
sound
quality.
To
replace
the
stylus,
remove
the
head
shell
from
the
tonearm
and
carefully
extract
the
stylus
(at
an
angle
from
above)
(Figs.
17,
18).
Reverse
this
procedure
to
install
the
new
stylus.
Obtain
replacement
stylus
(PN-Q1)
from
any
Pioneer
sales
outlet.
Refrain
from
using
stylus
of
other
manufacturers.
In
the
event
that
other
styli
are
used.
Pioneer
cannot
assume
any
responsibility
for
problems
which
arise.
CARTRIDGE
Connector
terminals
conform
to
international
standards.
In
replacing
the
cartridge,
make
sure
that
head
leads
are
connected
to
proper
points
(Fig.
19).
Temporarily
secure
the
cartridge,
then
check
overhang,
and
finally
secure
the
cartridge
firmly.
Refer
to
the
accompanying
illustration
for
information
on
adjusting
overhang
(Fig.
20).
CARTRIDGE
WEIGHT
AND
SUBWEIGHT
If
a
heavy
cartridge
is
used,
weight
of
the
main
counterweight
may
not
be
sufficient
to
balance
the
tonearm.
In
this
case,
add
the
subweight
to
the
rear
end
of
the
main
counterweight
and
adjust
balance
(Fig.
21).
If
a
light
cartridge
is
used,
it
may
be
necessary
to
insert
the
weight
plate
between
the
head
shell
and
cartridge
in
order
to
balance
the
tonearm.
PIONGCER
Fig.
17
HOW
TO
REMOVE
THE
STYLUS
Fig.
18
SCREWS
WHITE
(+)
L
RED
(+)
R
WASHERS
BLUE
(-)L
GREEN(-)
R
Zia
Fig.
19
OVERHANG
GAUGE
Fig.
20
MAIN
COUNTERWEIGHT
Fig.
21
11
SS
CES
[TCS
(CZ
SPECIFICATIONS
Motor
and
Turntable
Furnished
Cartridge
Motor:
Brushless
DC
servo
motor
Type:
Induced
magnet
type
Turntable
drive:
Direct-driven
Frequency
response:
10
to
50,000Hz
Speed:
Two
speeds,
33-1/3,
45
rpm
Channel
separation:
More
than
25dB
at
1,000Hz
Wow
and
flutter:
0.05%
(WRMS)
or
less
Output
voltage:
2mV
at
1,000Hz
S/N:
58dB
or
more
(in
case
of
using
(50mm/sec
or
2
inches
per
Pioneer
cartridge
model
PC-Q1)
second)
Turntable
platter:
31cm
diam.
Aluminum-diecast
Load
impedance:
100k2
alloy
Compliance:
10x10
®cm/dyne
at
100Hz
Tonearm
Stylus
for
replacement:
PN-Q1
:
:
Tracking
force:
1.0
~
2.1g
(proper
1.8g)
Tonearm
type:
Static
balance,
S-shaped,
pipe
Weight:
5.58
.
pei
Stylus
point:
Pathemalcony
type
Effective
om
length:
221mm
Mounting:
Conforms
to
the
EIA
standards
Usable
cartridge
weight:
4g
(MIN)
to
14g
(MAX)
Overhang:
15.5mm
Subfunctions
Automatic
return
tonearm
system
Skating
force
canceler
Hydraulic
cueing
device
Plug-in
type
light
aluminum
head
shell
Dust
cover
with
free
stop
hinges
Wooden
base
with
anti-acoustic
feedback
suspension
NOTE:
Specifications
and
the
design
subject
to
possible
modifi-
cation
without
notice
due
to
improvements.
Strobolight
Miscellaneous
Power
requirements:
AC
240V,
220V,
130V,
120V
or
110V.
50/60Hz
Power
consumption:
5.2W
(MAX)
Outer
dimensions:
480(W)
x
410(D)
x
185(H)mm
18-7/8(W)
x
16-1/8(D)
x
7-5/16(H)
in.
Weight:
11.2kg
24lb
100z
Accessories
Weight
plate
(cartridge
weight
adjustable)
Cartridge
mounting
screws
1
Cartridge
mounting
nuts
Cartridge
mounting
washers
45rpm
record
adaptor
Screwdriver
Sub
weight
Overhang
gauge
Connection
cord
Operating
instructions
ae
eto
er
BPN
CO
—
{apa
a
ES
ee
PIONEER
ELECTRONIC
CORPORATION
4-1,
1-Chome,
Meguro,
Meguro-ku,
Tokyo
153,
Japan
U.S.
PIONEER
ELECTRONICS
CORPORATION
75
Oxford
Drive,
Moonachie,
New
Jersey
07074,U.S.A.
PIONEER
ELECTRONIC
(:UROPE)
N.V.
Luithagensteenweg,"De
Meermin",2030
Antwerp,
Belgium.
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Australia
Printed
in
Japan
<75G02FO6F>
<PRB-005-0>
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