AMC DAC9 User guide

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INSTRUCTIONS
FOR
INSTALLATION
AND
OPERATION

Affia AffiA AffiA
CAUTION:
TO REDUCE
THE RISK OF ELECTRIC
SHOCK,DO NOT REMOVE
COVER
(OR
BACKT
NO USER.SERVICEABLE
PARTS
INSIDE,REFER
SERVICING
TO QUALIFIED
SERVICE
PERSONNEL
AFINDEVITERUN
CHOC
ELECTRIQUE
ET LES CONSEQUEI'.ICES
GRAVES
QUI
POURRAIENT
EN RESULTER,
TENTEZ
PAS
D'OUVRIRL
APPAREII
ETDE TOUCHER
AUX
COMPOSANTS
INTERNES
SANS
LA PRESENCE D'UNE
PERSCNNE
QUALIFIEE
PARAREDUCIREL RIESGO
DE
SACUDIDAS
ELECTRICAS,
NO DEBERA OUITARSE LA
TAPA
(NI PARTEPOSTERIOR).
CONSTJLTESEAL PERSONAL
CAPACITADO PARA LAS
REPARACIONES
INTERNAS-
WARNING:TO
PREVENTFIRE
ORELECTRICSHOCK.DONOTEXPOSETHISAPPLIANCETORAIN
OR
MOISTURE.
ADVERTENICIA:
PARA
EVITAREL RIESGO
DE INCENDIOO SACUDIDA ELECTRICA.NO DEBERA
EXPONERSE
ESTEAPARATO
ALA LLUVIA
O
HUMEDAD.
CAUTION:
TO PREVENTELECTRICSHOCK DO NOT USE THIS (POLARISED) PLUG WITH AN
EXTENSIONCORD,
RECEPTACLE
OR
OTHEROUTLET
UNLESS
THEBLADES
CAN
BEFULLYINSERTED
TOPREVENT
BLADE
EXPOSURE.
ATTENTION:POUR
PREVENIR
LESCHOCS
ELECTRIQUESNEPAS
UTILISERCETTE
FICHE
POLARISEE
AVECUN PROLONGATEUR. UNE
PRISEDE COURANT OU UNE AUTRESORTIEDECOURANT,SAUF
SILES
LAMESPEUVENTETREINSEREESA FOND SANS
EN
LAISSERAUCuNEPARTIE
FOND
SANSEN
LAISSER
AUCUNEPARTIEADECOUVERT.
PRECAUCION:
PARAEVITAR
SACUDIDAS
ELECTRICAS,NO DEBERAUTILIZARSEESTA
CLAVIJA
POLARIZADACON UN CORDON DE PROLONGACION,RECEPTACULO U OTROTIPODE SALIDAA
MENOS QUE SE HAYAN INSERTASO
COMPLETAMENTE
LAS LENGUETASPARA EVITAR SU
EXPOSICION.
NOTE:Some
AMC
products
areequippedwithdualormulti-voltagetransformers
(which
isindicated
on
the
back
panel).
lf
you
wishto
change
thevoltage,
please
bring
your
unit
toan
authorised
AMCservicetechnician
forinternalconversion.
ATTENTION:
Quelques
pieces
AMCsont
munies
de
transformateurs
d double
ou
d
multi-voltage
(indiqu6
au
panneau
arridre).Si
vousvoulezchangerlevoltage,veuillez
apportervotreappareilaufournisseurde
AMC
pour
le
transformer.
ZUR BEACHTUNG:EinigeAMC Geratesind mit Umschalternfiir unterschiedlicheNetzspannungern
ausgerustet
(Ein
Vermerk
auf
derRuckseiteweist
darauf
hin).
Die Anpassung,wenn notwendig,mu8 von einem qualifizieren Technikerin einerAMC Servicestation
vorgenommenwerden.
NOTA: Ciertoscomponentes
de AMC est6n dotadosde transformadores de doble tensi6n o de varias
tensiones
(lo
que
se
indicaen
el
panelposterior).
Sisedeseacambiar
latensi6n,
sirvanse llevar elaparato
a
un
t6cnico
autorizado
porAMC
para
suconversi6n
interna.
NOTETOCATVsystems installer:This
reminder
isprovided
tocalltheCATV system
installer's
attentionto
Article
820-22
ofthe
NECthat
provides
guidelines
for
proper
grounding
and,
in
particular,
specifiesthatthe
cable
ground
shallbe
connected
to
the
grounding
systemofthebuilding,
as
closetothe
point
ofcableentryas
practical.
NOTAPARA EL INSTALADOR
DEANTENAS DETELEVISIONCOLECTIVAS:
La presente
advertencia
se
proveepara
llamarlaatenci6n
del
instaladoralArticuloS20-22
deNEC
(C6rdigo
El6ctricoNacional)donde
se
facilitan
lasdirectrices
para
la
pertinente
puesta
atierra
yque
especifica
enparticularque
elcondutoratierra del
cabledebeconnectarsealsistemadeconexi6natierradel
edificio,
lomAs
proximoposible
alpunto
deentrada
delcable.
^ Thelightningflashwith
arrowhead,withinan
equilateral
A tria-ngle,is
intended
toalerttheuser
of
the
presence
| ^ ofrlninsulated"dangerousvoltage"
withinthe
L ), product's
enclosure;
that
maybe
of
sufficient
Il magnitude
toconstitute
ariskofelectricshock
^-' to"oersons.
a Theexclamation
point
withinan
equilateral
triangle
is
A intended
to
alert
the
userof
the
presence
of
Al;*il: ii,T
H:fi::"ilil:"J:;i;,ff
ill
i:'

APPLICATIONANDFEATURE
LIST
Features
of
AMCmodelDAC9
*The
AMCmodelDAC9wasdesignedto
meet
professionalquality
standards
forDigital
toAnalog
signal
conversion.
*The
highest
grade
of componentsare usedthroughout
withcriticalcomponents
selected
fortheir
sonic
performance.
*Double
sided,
throughhole
plated,
PrintedCircuit
BoardforDAC
sections.
*The
AMC
model
DAC9
provides
2
selectable
S/PDIFinput,
one
coaxialandone
fiber
optic.
*The
DAC9
canautomatically
lockto
either
32KH2,44.1KHzor43KHzdigitalsampling
ratesfor
use
withlaser
disc
players,
CD'sor
DATmachines.
*The
AMCmodelDAC9
uses
thelatest
generation
ofbitstreamcontinuouscalibration
ultra-linear
Digital
To
AnalogConverter,with
inherentlylow
jitters.
*For
thoseusers
with
digital
recording
capabilities,the
DAC9has
adigitaloutput
for
connectionto DAT,MDor DCCtype
machines,
thusmaintainingtheultimate
in
recording
quality.
*The
AMCDAC9
provides
anaccuratelycalibratedoutputlevel
in
accordance
with
the
EIA
(Electronic
IndustriesAssociation)recommended
standardof
2volts.This
output
level
provides
thebest
possibleperformanceparticularly
forhome
theaterusers.
*The
fiber
optic
input
provides
electrical
isolationfromLaserDisc
players,
thereby
avoidingconducted
interferencefromVideo
sources
into
the
Audio
chain.
*The
superior
performance
of the DAC9willprovide notonly
improved
technical
specifications
to
your
system,
itwill
alsosignificantlyupgrade
its
sonic
qualities.
*The
DAC9
canbeeasilyupgradedwith
MD5404u1
that
providesyoursystem
withsoft
andsmoothvacuumtube
sound.
(To
upgrade
withMD5404u1,
please
contact
with
AMC
distributor/dealersin
your
countryformoreinformation.
)
2

REARPANEL
CONNECTIONS/FRONTPANEL
CONTROLS
REARPANEL
-AVrs I
I
nrsoue
oecnoc
I
I ELECTRIOUE. I
( NEPAS
ouvRrR
J
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DAcg
WELTRONICS
CORP.
!C\Da\ . a
ffi
C(
1.ACLINE
CORD
2.
DIGITALINPUTS:
LD.DSS
FRONTPANEL
3.
DIGITAL
OUT
4.
AUDIO
OUTPUT
4.'EQ'INDICATOR
5.'SCMS'INDICATOR
6.'32"',44.1"',48',INDI
CATOR
1.POWER
SWITCHANDPOWER
INDICATOR
2.INPUT
SELECTOR
SWITCH
3.'LOCKED'INDICATOR
oooooo

REAR
PANEL
CONNECTIONS
1.AC
LINE
CORD
Plug
theAC line cord
into
a nearbywall
outletthat
provides
thecorrect AC power
line voltage,or into an un-switched
convenienceoutleton
anyAMC
product.
2.DIGITALINPUTS:LD,
DSS
Theseinputs
are
for
connectionto Digital
signalsources
via
one
Toslinkfiber
optical
jack
for
LD
andone
RCA
jack
for
DSS.
All
these
inputs
willacceptanydigital
signal
between32and48kHz
3.
DIGITAL
OUTPUT:
DIGITAL
OUT
This
digital
outputisfor
digital
recording
via
BNC
terminal,
toallow
onward
connection
to anotherdigitalcomponent
(Such
as a
DAT, DCC, Mini Disc or other digital
recorder).
4.AUDIOOUTPUT
TheseL & R stereoaudiooutputsarethe
outputsof
theDigitaltoAnalog
Converter.
Connectthese
outputstoany
input
on
your
amplifierexcept"phone" or "turntable",
using
a
high
quality
interconnection
cable.
4

FRONTPANEL
CONTROLS
1.POWER
SWITCH
TheDAC9is
turnedon
by
depressingthe
power
switch.
The
small
indicator
above
theswitchwill
glowgreen.
2,INPUT
SELECTORSWITCH
Therotary
switchselectswhichdigital
input
source
(LD,
DSS)is
fed
to
the
input
ofthe
DAC.
3.'LOCKED'
INDICATOR
Whenilluminated
this
indicates
thatthe
selecteddigital
inputis
being
processed
in
the Digital to Analog
Converterand is
'locked'
in. lf the 'locked' light
dosenot
illuminate
then there is no digital
information
being
received.
Check
your
source
andconnectorsto tracethe
fault.
Please note, oI certain source
componentsitisnecessaryto
switch
on
the
digitaloutput.
4.'ECI'INDICATOR
The 'EQ' lightis illuminatedwhenthe
Digital
Outputsingal
requires
analog
de-
emphasis.
This
function
is automatically
handled by the advanced digital
processing
circuitry.
EQ
isaform
ofnoise
reduction
used
in
the
earlydelayof
digital
recording,
butrarelyusedtoday.
5.
'SCMS'INDICATOR
Standsfor 'Serial
Copy Management
System',adevice
that
is
inbuilt
into
all
pre-
recordeddigital
software
(CDs,DCCs
ect.)
toallow
onlyonedigitalcopyof
the
original
recordingto
be
made.The
SCMSindicator
will
illuminateifthe
software
source
is'copy
protected'.
6.
'32"',44.1"
'48'
INDICATOR
WheninoperationoneoftheseLEDswill
illuminateindicatingthe frequency
in
kilohertzof
your
selecteddigital
input.CD
Transportsopreate at 44.1 k1z and
DCC/DAT
player
atanything between32
and48kHz
(depending
on
tapespeedand
machine).NlCAM
and DigitalAudio
Broadcasting
(fromsatellite)commonly
operateat32kHz.althoughthis
can
vary.
NOTE:Beforemakingcopies
ofany
pre-
recordedmaterialensure
you comply
with allcopyright restrictions
thatmay
apply.
5

SPECIFICATIONS
THD
andSMPTE
IMD
@1
kHz/OdB. ..0.005%
"A"-wtd
Signal
to
Noise
Ratio ....104dB
"A"-wtd
Output
Level ...2Vrms
Frequency
Response
20Hz-20kHz <+/-0.5dB
ChannelSeparation
ref.1kHz .
".
>90d8
ChannelUnbalance
. .....
f0.3dB
Resolution. .....18
bits
Output
lmpedance
. 220
ohm
Linearityupto
-90
dB
.. t0.5
dB
Wowandflutter.. Quartz
control
precision
Inputautomaticallylockedto
32k,
44.1k
and
4SkHzSPDlF
digital
signals.
Dimensions
(W
x
H
xD) ....
430
x82x300mm
WeltronicsCorp.reserved
theright
to
improveits
products
at
anytime.Specificationsare
subject
to
changewithoutnotice.

SAFETY
INSTRUCTION
1.
READINSTRUCTIONS.
Allthe safetyand operatinginstructionsshouldbe readbeforethe
applianceisoperated.
2.RETAIN INSTRUCTIONS
The
safetyandoperatinginstructionsshouldberetainedforfuture
referencs.
3.HEEDWARNINGS
All warningson lhe appliance and in the operating
instructions
shouldbeadheredto.
4. FOLLOW INSTRUCTIONS
Alloperatinganduse
instruptions
shouldbefollowed.
5.WATERANOMOISTURE
The
appliancs
shouldnotbe used
near
water*forexample,neara
bathtub,washbowl,
kitchensink,
laundry
tub,
in
awetbasemont,or
n6ar
aswimming
pool,
etc.
6. CARTSANDSTANDS
Theapplianceshouldbe usadonly with
recommendedbythe
manufacturer.
6A.
An applianceand cart combination
shouldbe
moved
withcare.
Quick
stops,
excessivelorc€, and unevensurfaces
may causethe applianceand cart
combination
tooverturn.
7.WALLORCEILING
MOUNTING
This
equipment
is not designedfor use mountedon a wallor a
ceiling.
8.
VENTIIATION
The
applianceshouldbesituated sothatitslocation
orposition
does
notinterfere
with
itsproper ventilation.For
example,theappliance
shouldnot
besituated
onabed,
sofa,rug,orsimilar
surface
thatmay
block
theventilation openings;
or placed
in a built-in
installation,
suchasbookcaseor
cabinet
thatmay
impede
theflowofair
through
theventilationopenings.
9.HEAT
Theappliance
shouldbesituatedawayfromheal
sourcessuchas
radiators,
heat registers,
stoves,or other
appliances
(including
amplifiers)that
produce
heat.
10.PowERsouRcEs
The
appliance
shouldbeconnected
to a power
supply
only
ofthe
typedescribed
in the operatinginstructionsor as marked
on the
appliance.
I1. POWER.CORDPROTECTION
Power-supply
cordsshouldbe
routed
sothattheyare
not
likelytobe
walkedonorpinched
byiterns
placed
upon
oragainstthem,
paying
particular
attentiontocordsatplugs,
comvenience
receptacles,and
the
point
whers
theyaxitfromthe
appliance.
12.CLEANING
Theappliance shouldbe cleanedonly as recommendedby the
manufacturer.
!3.NONUSEPERIODS
The
power
cordoftheapplianceshouldbe
unpluggedf
rom
the
outlet
when
lettunused
for
along
period
oftime.
14.
OBJECT
ANOLIOUIOENTRY
Care
should
be
taken
so
that
objectsdonotfallandliquids
are
not
spilledintothe
enclosure
throughopenings.
a cart or standthat is
1s.
SERV|C|NG
Theusershould not attemptto service
the appliancebeyondthat
describedintheoperating instruc'tions.
Allotherservicingshouldbe
referred
to qualified
service
personnel.
16.
DAMAGE
REOUIRINGSERVICE
The applianceshould be sqrviced by qualified service
personnel
when:
a)The
power-supply
cord
orthe
plughas
beendamaged;
or
b)
Objects
have
fallen,orliquidhasbeenspilled
intotheapplianc€;
or
c)Theappliancehas
been
exposedtorain; or
d)Theappliancedoes not
app€artooperat€
normallyorexhibitsa
markedchangeinperformance; or
e)
The
appliance
hasbeendropped,
or
theenclosure
damaged.
17.
POWER
LINES
(AppLtEs
ro TUNERANDRECETVERSONLY)
Anoutdoorantennashouldbelocatedaway
frompower lines.
I8. OUTDOORANTENNA
GFOUNDING
(AppLtEs
To TUNERANDRECETVERSONLY)
It an outside antennais connectedto the receiver,be surethe
antennasystem is grounded so as to provide soms protection
against
voltage
surges
and
built
u.pstaticcharges.
Section810
of
the
NationalElecirical
Code,ANSI/NFPA
No.7G19&4,
provides
informationwithrespectto propergrounding
of thomast
andsupportingstructure,
grounding
of
the
lead-inwiretoanantenna
discharge
unit,sizeof grounding
conductors,
location
of
antennadischargeunit,connection
to grounding
electrodes,
and
requirements
tor
the
grounding
electrode.
See
Figure.
a) Use No, 10 AwG (5.3 mm2) cgpper, No. 8 AWG (8.4mm2)
aluminum,No, 17AWG(1.Omm')
copperclad steelor bronze
wire,orlarger, asaground
wire.
b)Secure antennalead-inand
ground
wires
tohousewith standotf
insulatorsspacedfrom44 feet
(1
.22-1.83m)apart.
c)
Mountantennadischargeunit
ascloseas
possible
to
wherelead-in
enters
house.
d)Use
jumper
wire
not
smallerthanNo.
6AWG
(t3.3
mm2)
copper,
ortheequivalent,whena s€parate
antenna-groundingelectrode
is
used.
See
NEC
Section81G210).
Antenna Grounding
According to
tfte National Electrical
Code
Antenna Lead
In Wlre
Anlenna
Orschargc
Unrt (N€CF
Sectron 8 lO 201
Groundrng
Conductori
(N€C-
Sectron
810.2
ll
Ground
Clamgs
Power Servrce
Grounctrng
Elecrrode
Systcm
(NEC*
Art 250 Perr
H)
xNatronal
Electrrcal
Code
Avtrlablelrom Lrbrary
book
Stores.o. NatronalFrre Protectron
ASsooatron
lEatterymarch
Park.
OurncyMA 02269)
7

WELTRONIGS
CORP.
LONDON/1.A.
PN:
214047