Technics SL-1900 (MC) Manuel utilisateur

@Technics

Direct

Drive

Automatic

Turntable

System

sL-rlgoo

OPERATING

INSTRUCTIONS

Before

operating

this

set,

please

read

these

instructions

completely.

@ Phono cables @Output

terminals

Parts

identification

It @AC

power

prus @Ground

wire

O Hinge

€)

Turntable

mat

O Turntable Platter

@Motorshaft

(CentersPindle)

Strobe

mark

OStrobe

illuminator/

pilot

O Strobe

dots

Speed

selector

we want

tothank

you

for

selecting

the

sL-1900,

Direct

Drive

Automatic

Turntable

system'

For

optimum

performance,

werecommend

that

you

read

these

instructions

carefully'

cautiont Never

connectthe Ac power plug before

the assembly

has been

completed'

Assembly

andset-up

The operating

instructions

are commonlyapplicable

to sets

with cartridge

and withoutcartridge,

so that please

refer

to the

followingnotes

for further information.

Since

the overhang

gauge isfurnished

to sets without

cartridge,

refer

to the item concerning

cartridgeinstallation

for correct

mounting.

Forsetswithout

cartridge,

the cartridge

section

ofthe specifica-

tions may be neglected'

@Balanceweight

€D

Stylus pressurering

@ Anti-skating control knob

Arm rest

Cueing lever

Armclamp

@Memo-repeat

Tubular

arm

Record

size

selector

nut

@Start/stop

lever

Headshell/cartridge

@Turntable base

€l Pitch control knobs

500

hours),

sodo not

apply

too much

oil, normore

frequently

than necessary.

Never

use

any

other

type

of oil'

€)lnstallation

of the turntable

platter

1. Place

the

turntable

platter

the

motor

shaft

(centerspindle)'

2. Place

the

turntable

maton

the platter'

Note:

1)Therotor

isconnected

to the reverse

surface

theturn-

table

platter.(The

magnet

the motor

isattached

to the

turntable

platter.)

maintain

optimum

performanceas

soecified,

extra

care

should

betaken

to prevent

adhesion

dust

or iron

filings

themagnet

and

not

to damage

the

magnet

droPPing

it'

2) Donot remove

the

three

screws

for securing

the magnet'

(See

Fig.

3.)

Should

the position

ol thefixed

magnet

altered

loosening

the securing

screws,

the rated

performanceof

the unit

can not

beguaranteed.

@lnstallation

of the headshell (SeeFig'a')

Insert

the plug

portion

the head

shellinto

thetront

end

thetubular

arm,

and

turn

the

locking

nutclockwise

(in

the

direction

shown

the arrow

"A"), with

the head

shell

held

horizontally

to secure

JirmlY.

QCheck the Paris.

Turntable

unit

. ........

Turntable

Platter

.....

Turntable

mat

.....

Dustcover

r.p.m.

adaptor

Special

oi1.

.......

Balance

weight

Head

shell/cartridge

... ...

(Overhang

gauge

....1

...1

....1

...1

..1)

gApply two or three drops of oil to the molor shalt usingthe

furnished

oil container'

(See

Fig.2.)

Although

the

unit

hasbeen

lubricated

before

shipping

from

the

{actory,

apply

a few drops

ofoil

to the motor

sha{t

for assur-

ance.

After

that,

application

two or three

drops

o{oil once

every

2000

hours'

operation

or so is sufiicient'

The

time in-

terval

is much.

longer

than

that

theformer

typemotors

(200-

OAdjustmentsol the horizontal

"0" balanceand the slylus

pressure

1. Insertthe

balance

weight

ontotherear

shaft

thetonearm.

(See

Figs.

5.)

2. Remove

the stylus

cover,

ifyour

cartridge

hasone.

3. Release

thearm

clamp

(Fig.

6)andlift

the

tonearm

from

thearm rest

to free

the

tonearm.

Nole:

thetonearm

isurged

to returnto thearm rest

whenthe

tonearm

is held

in a free

statein Fig.7,

rotatethe

turntable

platter

clockwiseabout

10times.

This

is necessary

because

in rare

casesthe automatic

mechanism

mayhave

engaged

the

tonearm

gear

or moved

outof its normal

position

during

transDortation.

4, Turnthe

entire

balance

weight

clockwise

(indicated

bythe

arrow

"A") or countrerclockwise

(indicated

bythe

arrow

,,B,')

untilthetonearm

approximately

balancedhorizontally.

(See

Figs.

7 and

8.)

5. After

thetonearm

horizontally

balanced,temporarily

fixthe

tonearm

bythe

armclamp. (See

Fig.

9.)

Hold

the

balanceweight

stationary

withfingers

asshownin

Fig.

I androtate

only

the

stylus

pressure

ring

to bring

the

numeral

"0" of

the

ring

intoalignment

withthe centerline

the

tonearmrear

shaft.

(The

adjustment

the horizontal

balanceisnow

completed.)

Nole:

.1)

During

the

adjustment

ofthehorizontal

balance,

sure

that

the stylustip ofthe cartridge

doesnot

contact

the

turntable

mat

orturntable

base.

2) Ensurethat

the anti-skating

knob

isat ',0'.'

position.

(See

Fig.

9.)

There

arecaseswhere

the

tonearm

may

swayor flow

slightly

atthe

position

"0" due

tothe

highly

sensitive

rotational

part

the

tonearm,

but

this sideforce

trivial

andpresents

no inconvenience.

3) Ensure

thatthe

cueinglever

intheloweredposition

shownin

Fig.

4) Make

certainthatthe

speed

selector

isinthe

,,.,'

position,

the

balance

adjustment

easilymade

astheturntable

platter

remains

stationary.

6. After

adjusting

thehorizontal

balance,

turnthe

balance

weight

clockwise

the

direction

ofthe

arrow

and

alignthe

correct

stylus

pressure(.1.75

). (See

Fig.

10.)

Nole:

1) Asthe stylus

pressure

ring

rotates

together

withthe ba_

lance

weight,

proper

stylus

pressure

can beselected

directly

reading

the graduated

ring.

2) In cases

where the recording

levelof a recordis ex-

tremely

high

or the unitis usedin a room

having

low

temperature

or records are ptayed in places where

vibrations

are liable

to be transmitted

to theturntable

system,

"distortion"

of sound

or,,skipping"

of stylus

may

take

place.

such

cases,

setto

,,2

g" for

optimum

perf

ormance.

@Anti-skatingtorce control

Setthe anti-skating

control

knobto the

samevalue

that

set

for

stylus

pressure.

(See

Fig.

11.)

Olnstatlation

ol the dust cover (SeeFig.12.)

Place

the

dust

coverinto

position

fromdirecily

above,

holdingit

at both

sides.Fordetaching

the dustcover,be certaintirstto

raise

itas illustrated

before

removal.

Arm clamp

Tonarm-Arretierklammer

Dispositif de fixation du bras

Armklem

Ldrskldmma

fcirtonarm

Grapa del brazo

Note:

Opening

or closing

ofthedust

coverduring

playing

should

made

gently

possible,

sincethis

may

notonlycause

harmfulturntable

vibrations,butalso

resultinskipping

ofthe

styl

us.

@Placement

1.Use

the

unit

ina stable

and

horizontal

position,where

there

littleor no

vibration.

2. Use

theunit

far away

fromthe

speakers

aspossibleand

isolate

itfromsound

radiation

from

ihem.

3. Donot

place

theunit

where

itis exposed

todirect

sun,dust,

moistureor heat.

4. Keep

it in a well-ventilated

place.

@Connect

the AC PowerPlug.

Connectthe

ACpowerplug

theACsocket.

Makesure

that

theAClinevoltage

selector

iscorrect

to your

local

voltage

beforeconnecting

theACpower

plug.

Never

connect

to a DCsocket.

lfthe

pre-selected

voltage

isdifferent

from

your

local

voltage,

turnthe

AC line

voltageselector

with

a screwdriver

to yourlocal

voltage.

(See

Fig.13.)

@ Connect

the outputlerminals.

Output

lerminals Amplifier

or Receiver

Howto play

Manual

play

OSet tnespeed

selector

to the desired record speed.

(SeeFig.

@ Release

thearm clamp.

O Liftthe cueinglever as indicatedby the arrow. (SeeFig. 15.)

@ Movethe tonearmover the record and lhen lower the cueing

lever.The lonearm will descendslowly onto lhe record and

play

will begin.

6When tinishedplaying,

the tonearmwill automatically

return

lo the arm rest (auto-return)with the power shutoff' and the

turntable

platter

will slop rolation'

(The

turntable

platter

will rotate

for a short

timedue

to its

inertia.

)

Note:

1) When

the

tonearm

is moved

towards

the record,

the powel

turnedon

and

the

turntable

willstart

rotating.

lfthespeed

selector

positioned

"'", the

turntable

notrotate,

although

the

strobe

illuminator

lit.

2) lfyou play

a 45

r.p.m.

record

with a large

center

hole,use

the

iurnished

adaptor

thecenter

spindle.

Automatic

play

QSet the speedselector

in the same manner

as in manualplay

and releasethe arm clamp.

@Set the record size selector to the diameter of the record (7"

[17

cm], 10" [25

cm], or 12" [30

cm])you wish to play.

(SeeFig.

16.)

L (White)

R (Red) -----------*

trl Channel

+E Channel

E (SPade

lus) .-* GTID

Note:

Besure

to connect

the

ground

terminal

tothe

amplif

ier

receiver.

this connection

is notmadeor is loose,

a power

source

"HUM"

will

result.

Hori40ntallybalancedstate

Waagrecht balancierterZustand

Condition d'6quilibrage horizontal

Horisontaal gebalanceerde

staat

Horisontellt balanserat lage

Estado de equilibrio horizontal

Styluss pressure ring "0"

Auflagedruck-Einsteltring"0"

Bague de pression d'appui

vertical en position "0"

Instelring

voor de naalddruk

,,0',

Niltrycksring "0"

Anillode la presi6n

de laaguja

en ,,0"

Anti-skating control knob "0"

Antiskating-Einsteller"0"

Bague de reglageanti-patinage

en position "0"

Dwarsdruk-compensatieknop"0"

Anti-skating kontroll "0"

Perillade antideslizaci6nen "0"

@Pull

thestart/stop

lever.

The

tonearmwill

moveaccording

tothesize

oftherecord

set,

andstart

playing

(Automatic

start).

@When

playing

hasfinished,

thetonearmwill return

to its rest

andthe unitwill shul olf automatically.

Repeat

play usingthe "memo-repeat" knob

Thisunitis

equipped

witha convenient

mechanism

the

"memo-repeat."

Youcanplay

the record

repeatedlyfrom

oneto sixtimes

continuously

bysettingthis

knobto the desired

posiiion.

Setthe "memo-repeat" knobto the desirednumberyou wish

to play.

(See

Fig.17.)

"R" position

enables

you to repeat

playing

continuously.

Note:

The

"memo-repeat"

knobmay

beturned

eitherclockwise

orcounterclockwisewithout

anyinconveniences,

butcare

should

betakennotto touchit whenthetonearm

is in movements

for

automaticstart,automatic

return,

etc.

Howto suspend

playing

Pushlhe start/stoplever.

Thetonearmwill automatically

return

to the arm rest,with the

power sourceshutoff.

Ofcourse,the unitwill automatically

shutoffeven when the

tonearmis manuallyreturned

to its arm rest

directly.

Fortemporarysuspension

ol playing,

raisethe cueinglever,

and the stylus

tip ol the cartridge

will be raisedlrom lhe record.

Note:

'1) Incase

where

the "memo-repeat"

knob

is located

in position

otherthan

"0", playing

willbe

repeated

bythe

number

times

set,andtherefore,

besure

to keepthe ,,memo_repeat',

knob

located

atthe "0" oosition.

2) Records

having

dimensions

other

than 17,

25and

30cm (7",

10"

and12")

should

played

"Manual,'

pray.

Stylus

pressure

ring

Auflagedruck-Einstellring

Bague

depression

d'appui

verticale

enPosition

Instelring

voordenaalddruk

Niltrycksring

Anillo

presion

laaguia

Adiustments

QAdiustment

of tlrearm lift

height (See

Figs.

and 19.)

Thearm

liftheight

(distance

between

thestylus

tipand

record

surface

whencueing

leveris raised)

hasbeen

ad-

justed

thefactorybeforeshipping

to approximately

10mm (3/16"

Io 25/64").

Forusingdifferent

cartridgesavailableon

the

marketor when

further adjustmentsare particularly

necessary,

move the

tonearm toward the motor shaft (center

spindle),

with the

stylus

cover

put

on,

andthen

push

down

manuallyon

thearm

lift bar to expose

the adjustment

screw.

Turn the screwfor

justment.

Clockwise

rotation

-distance between

the recordandstylus

tip is reduced.

Counterclockwise

rotation

-distance between

the recordand

stvlus

tip increases.

Note:

Asthe adjustingscrew

hasa hexagon

head,be sure

to make

theadjustment

whiledepressing

thearm

lijt.

gAdiustments lor automaticstartand automatic

returnpositions

(See

Fig.

20.)

Should

the

tonearmnot

unction

correctly,

make

adjustments

according

tothe

following

procedures.

Adjustment

for aulomatic

start

position

(Remove

the rubbercap.

)

Incases

where

thestylustip descends

outsideofthe record

- Move

clockwise.

Incases

wherethestylustip descendsonto

halfwayof

a re-

cordedoiece

-Move counterclockwise.

Adjustment

for automatic

returnposition

(Remove

theturntablemat.)

Incaseswherethetonearm

tends

to returnbetore

the playing

has

finished

- Move

clockwise.

Incases

wherethetonearm

failsto return

afterthe last

groove

ofthe record

- Move

counterclockwise.

@Speedadjustment

(withpitch conlrol knobs)

(SeeFigs.

21 and

22.)

Strobe

dots are set on the rim ofthe turntableplatteraccord-

ingto the power

frequency

andthe number

of revolutions

the records,

Makeadiustment,

referring

to strobedot indica-

tion.

(See

Fig.21.)

45rpm

33-1/3

rpm 50Hz

60Hz

Setthe soeedselector

to the numberof revolutionsto be

adJusted.

(See

Fig.

22.)

Releasethearmclamp

andraise

thecueing

lever.

Movethetonearm

to a sliqhtextent

towardstheturntable

Diatter.

The

strobe

illuminator/pilot

lampwillbe

litforilluminating

the strobedots.

Whileturningthe

pitch

controlknobs

either

to " +"

sideor " -" side,ad.iust

to such

an extentthatthe strobe

dotsof

theturntable

look

as if

they werestationary.

S6lecteurde tension d'alimentationC.A.

Netstroomspann ingskiezer

Ndtspdnning svdljare

Selector de voltage paracorriente alterna

The

state

underwhich

the

strobe

dots

seem

to be

stationary

represents

the correct

speed.

60Hz,

33-1/3

rpm

dots seemto be stationary.

" *" direction

This increases

the speed oJ

the turntable

rotation,

and the

strobe

dot pattern seems to flow in the same direction

tho irrrnt.hl6 ^l,tt6r

" -" direction

This

decreases

the

speedofthe

turntablerotation,

resulting

a state

opposrteto

thatinthe '+" direction.

Nole:

Strobe dot patlern

The

strobe

illuminator./pilot

lamp

thrs

unit

employsthe

commercrally

avaiiable

power source.The frequency

ol such

power source,

when actuallymeasured,

has a fluctuation

about

0.2o,'0.As such a fluctuation

of the power source affects

the strobe illuminator,

the strobe

dot pattern

also seems to

tluctuate

to a certain

extent.But

the unit rs

not affected

by the

Iiuctuations

o{the power source,since

a D.C.motor i.s

oyed.

Maintenance

QExtracare

should

betakenin handling

the

turntable

platter.

The

turntable

platter

has

a rotor

(the

magnet

ofthemotor)

directly

connected

to it.

Therefore,

the

turntable

platter

should

not

beremoved

from

the

moto'r

shaftunnecessarily,

since

adhesion

dustor iron

{ilings

ontothe

magnetresults

deterioratron

the

performance.

Shoulditbecome

necessary

to remove

iheturntable

platter,

besureto

pullthe

power

plug

outofthe

socket.

Owipe the dustcover and turntablebasewith a soft,dry cloth.

Never

useany

cleaners

containing

alcohol,benzine

thin-

ner.

Useofa chemical

dustcloth

andthe like

shouldalso

avoided.

sure

that

the

dustcoveris

not

exposed

to in-

secticide

spray,as

cracks

or blursmay

result

remove

stubbornfinger

prints

or grease

spots,

detachthe

dust

cover

ordisconnect

the

power

plug

anduse

a soft

cloth

dampedwith

a mild

soap

andwater

solution.

@Dust

and

dirtadhering

to the stylustipor the record

should

be carefullyremoved.

usedwith

dustand

dirt

acihering

the

stylustip,the

stylus

will

not{it

intothe

sound

groove

ofthe reccrd

correctty.

This

may

not

onlyresult

inthe

deterioration

tone

quality,

but

causeunduewear

therecord

andthe

stylus

tipitself.

Usea brush

having

softtips,

movingitfrom

the

base

the

tip

the

stylus

carefullyfor

removing

dustand

dirt.

Therecord

should

also

becarefullv

wiped

with

a record

cleaner

high

qualrty.

Cueing

lever

5to 10

mm(3/16"

to 25164"1 Lifthebel

5 bis 10mm Levierderelevage

5 d 10

mm Armlifthefboom

5-10mm TonarmslyftsPak

5tiff10

mm(3/16"

lill 25164"1 Palanca

de5 a 10mm colocaci6n

@Before

detaching

or attaching

thehead

shell,

be sure

to turn

the

volume

control

fortheamplifier

or receiverto "0" position'

or to turnolf the Power.

Detaching

or attaching

the

headshell.

with

thevolume

con-

trol

turned

high,

maynotonly

resultin

unpleasant

noises,

but

cause

damage

tothespeakers.

@Wipe

thehead

shell

terminals

fromtime

totime.

(See

Fig'

23')

Adhesion

dust

and

drrtto

theheadshellterminals

may

grve

rise

to contact

faults,

thus

resulting

in increased

"hum" noise

or non-transfer

of sound

to the speakers.

Use

a-softdry cloth

the

likelor

wiping

thehead

shellterminals.

@Wnen

you use

other

head

shells'

becareful

about

the

head

shell

configuration.

(See

Fig 24')

When

othei

types

of head

shells

are

employed

the handle

oortion

the head

shell

maystrike

against

the inner

upper

surfaceofthedustcoverduringtheautomaticstartorautomatic

return

movements

ol the

tonearm.

Insuch

a case,

we recom-

mend

to play

with

thedust

cover

open.

@Replacement

ol the stylus (SeeFig'

)

Remove

the head

shell/cartridge

from

thetubular

arm Hold

thestylus

assembly

between

fingers

and

withdraw

slantwise

asshown

in Fig.25.

Align

the

newstylus

assembly

with

the

square

opening

the

cartridge

main

body

and

push

itinto

the

opening

positively

faras

will

go.

The

unit

isJurnished

with

adiamond

stylus.

The

liie

thestylus

differs

depending

the

conditions

for use,

but

itisrecommended

to replace

thestylus

the

firstsign

wear,

regarding

about

500

hours'

useasan

approximate

standard.

The replacement

stylusfor the unit is the EPS-270ED'

@ Repfacement

of the cartridge. (SeeFigs'26and27

Connect

the

lead

wiresto

thecartridge

terminals.

White

(L +).

Blue

(L - )

Red

Green

(R -)

.........LeJt

channel

.........Left

channel

.........Ri9ht

channel+

.........Ri9ht

channel

Install

the cartridge

to the spacer,and tighten

it with

screws

provided

with

the cartridge.

(SeeFig.26.)

Headshell

Lead wire

Shell spacer

Nut Terminal

Cartridge

Tonarmaufsetzpunkt-Justierschraube

Visde r6glage

du d6marrage

du brasdelecture

Regelschroef

voorhet

punt,

waar

denaald

op deplaat

komt

Justerskruv

fdr tonarmens

start

Tornillito

deaiuste@@@razo sonoro

Regelschroef

voorhet

punt,

waar

dearm

terugzwenkt

Justerskruv

f6rtonarmens

atergiing

Tornillito

deajuste

delretorno

del

brazo

sonoro

Overhang adjustment screw

52mm(2-3164"1

3.Loosen

overhang

adjustment

screw

andmove

the

cartridge

forward

or backward

until

thedistance

between

thestylus

tip and the plug becomes

mm (2-g/64")

as shown in

Fig.27.

Tighten

adjustment

screw

without

moving

the

cartridge:

Features

Turntable

section

IAutomatic turntable

systemwith ,,memo-repeat"

which enables

you lo enjoy repeated

playfrom 1 to 6 times and continuously

repeated

play.

Theunit

isequipped

with"memo-repeat"

mechanism

peculiar

to Technics

which

enables

you

to enjoy

repeated

play

in addition

to the manual play,

auto-start,

auto-return

und auto-stoo.

Additionally,

inthe auto{unction,

excellent

mechanism,

design_

ing

and

craftmanship

such

asout-sert

molding,

etc.

are

con_

centrated

and in cooperation

with a greatdeal of know-how

obtained

through

actual

production

of auto-mechanism

during

the

past

many

years,

the quiet

andhighly

reliable

turntable

system

has been oresented.

!High mass heavy

weightclass

designplacing particuaar

emphasis

on acouslic

quality.

There

are unexpectedly

frequent

demands

for a compact

and

high

performance

turntable.

this

unit,

unnecessary

space

has

been

minimized

asfar as possible,

while

the heavy

weight

base

produced

through

proper

polymerization

reaction

of inorganic

matter,

resin

and

glass

fibers

employed

for

theunit

base

which

actseffectively

for the prevention

against

external vibrations.

Moreover,

bythe employment

ofthe isolator

inwhich

visco_

elastic

material

superior

in external

vibration

cur_off

and

absorb_

ing

properties

combined

withmetallic

spring,

a marked

im_

provement

has beenachieved

in the howlingpr6vention

effect.

I Molor construclion

peculiarto Technics

in whichthe rotor ot

the motor is integrally

connected

to the turntable

platter.

Technics

turntable

systemswe tookthe lead

theworld

putting

theDirect

Drive

system

onthe market

with

a marked

improvement

inthe

performance

of turntables.

Since

then,

we have

developed

numerous

turntables

of high

performance,

lurnishi.ng

new

toprcs

ofconversation

each

time.

One

of these

achievements

the motor

construction

this

unit,

unique

andsingular

theworld,

inwhich

therotor

the

motor

directly

connected

tothe

turntable

olatter.

Large finger lift

GroBerGriff

Souleveur manuel d grand d6gagement

Groot uitsteeksel

Stor fingerlyft

Gancho grande parael dedo

Dust cover

Staubabdeckung

Couvercle anti-poussidres

Stofkap

Plexiglashuv

Tapa de protecci6n contra el polvo

I Automatic

turntablesystemequipped

with " memo-repeat"

tunctioncapable

of repeatedly

playinga recordfrom one to six

timesor continuously

playing

a recordrepealedly.

Theunit

isequipped

witha convenient

"memo-repeat"

function,

and

you

canenjoy

manual

playing;

automatic

start,

automatlc

return,automatic

stop,

and in addition,

repeatedly

playing

record

fromoneto six

timesor continuously

playing

a record

repeated

lDependable one chip

tC (SeeFig' 28.)

Firstin development

the lC(AN630)

the Back

Electromotive

ForceFrequency

Generator

system.

The

motordrive

unit,

control

unit

andvarious

additional

func-

tionsare integrated

into

the B.FG.system

which

utilizes

the

Back

Electromotive

Force

Frequency

generated

thedrive

winding

oftheDirect

DriveMotor.

Consequently,

superior

temperature,

dritt

and

transientchara-

cteristics

areobtained

improvingthe

overall

reliabilityot

the

turntable

system.

Theone

chiplC

(AN630)

employed

inthisunit

hasa totalof321

elements

such

transistors,diodes,

resistors

andcapacitors

consolidated

in a silicon

substrateapproximately

3x2.7 mm2

size.

take

pride

the

factthattheone

chiplC(AN630)

represents

the

world's largest

degreeof integrationas a bipolar

linear

lC.

' BackElectromotive

ForceFrequencyGenerator

IHiJidelity perlormancewith rumble (signal

to noise ratio)of

-73 dB (D1N45539B),wow and flutter

of 0.03%

(W'R'M.S.).

The

ultra-low

speed

brushless

motoremployed

inthis unit

has

theextremely

lowpower

consumption,

andis

thusfree

from

vibrationsdue

to excessive

energyor heat

generation.

Thehigh

performance

the Direct

motorisdue

tothe eff

iciencyof

the

newlydeveloped

heavy

weight

baseand

to the utilization

the

one

chip

lCofthe B.FGsystem.

Tonearmsection

I Highlysensitive

universal

tonearm

Highlysensitive

universal

tonearm

ofthe gimbal

suspension

system

in which

precision

pivot

bearings

areemployed

atthe

horizontal

and

vertical

journals

thetonearm

hasmade

possible

to realize

arn'ltrictionof

7 mg.

Therefore

the

performance

ol the high-compliance

cartridge

can beJully

realized.

I Diecast

aluminum

headshell

The

headshell

integrally

formed

bystrong

diecast

alumrnum

forreduction

inweight

protectedfrom

harmful

headshell

resonance.

Additionally,

the

headshell

terminals

are

gold-

plated

for

prevention

contact

faultsat

replacement.

I Viscousdamped

cueing

prevent

damage

tothe

stylus

tipand

records

liable

take

place

duringoperation

the

tonearm,a cuelng

oevrce

damped

withviscousoil isadopted.

Since

thetonearm

can be raised

or loweredthrough

operatlon

(

thelever,

location

a desired

playing

portion

temporary

suspensionof

the

playing

are

convenientll'achieved.

I Anti-skatingcontrol

Prooeroutside

lorcecan

applied

such

a simple

operatior

aligning

theknob

with

thesame

value

thestyluspressur€

thus

cancelling

theskating

lorce

harmful

the

stylus

tip'

I Low-capacitance

phonocablesthatwill not impair the high-

frequencycharacteristics

of the cartridge

Autres manuels pour SL-1900 (MC)

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