McIntosh CR7 User manual

IMPORTANTSAFETYINSTRUCTIONS
THESEINSTRUCTIONSARETOPRO-
TECTYOUANDTHEMclNTOSHIN-
STRUMENT.BESURETOFAMILIARIZE
YOURSELFWITHTHEM.
1.Readallinstructions- Readthesafetyandoper-
atinginstructionsbeforeoperatingtheinstrument.
2.RetainInstructions- Retainthesafetyandoper-
atinginstructionsforfuturereference.
3.Heedwarnings- Adheretowarningsandoper-
atinginstructions.
4.FollowInstructions- Followalloperatinganduse
instructions.
WARNING:TOREDUCERISKOFFIREORELEC-
TRICALSHOCK,DONOTEXPOSETHISINSTRU-
MENTTORAINORMOISTURE.
5.PowerSources- Connectthepowersupplyonlyto
thetypedescribedintheoperatinginstructionsor
asmarkedontheunit.
6.Power-CordProtection- Routepower-supplycords
sothattheyarenotlikelytobewalkedonorpin-
chedbyitemsplaceduponoragainstthem,pay-
ingparticularattentiontocordsatplugs,conve-
niencereceptacles,andthepointwheretheyexit
fromtheinstrument.
7.Ventilation- Locatetheinstrumentforproperven-
tilation.Forexample,theinstrumentshouldnotbe
placedona bed,sofa,rug,orsimilarsurfacethat
mayblockventilationopenings;or,placedina
built-ininstallation,suchasa bookcaseorcabinet,
thatmayimpedetheflowofairthroughtheven-
tilationopenings.
8.Heat- Locatetheinstrumentawayfromheat
sourcessuchasradiators,heatregisters,stoves,or
otherappliance(includingamplifiers)thatproduce
heat.
9.WallorCabinetMounting- Mounttheinstrument
ina wallorcabinetonlyasdescribedinthe
ownersmanual.
10.WaterandMoisture- Donotusetheinstrument
nearwater- forexample,neara bathtub,
washbowl,kitchensink,laundrytub,ina wet
basement,orneara swimmingpool,etc.
11.Cleaning- Cleantheinstrumentbydustingwitha
drycloth.Cleanthepanelwitha clothmoistened
witha windowcleaner.
12.ObjectandLiquidEntry- Donotpermitobjectsto
fallandliquidstospillintotheinstrumentthrough
enclosureopenings.
13.PowerLines- Locateanyoutdoorantennaaway
frompowerlines.
14.OutdoorAntennaGrounding- Ifanoutdoor
antennaisconnectedtotheantennaterminal,be
suretheantennasystemisgroundedtoprovide
someprotectionagainstvoltagesurgesandbuilt
upstaticcharge.
IntheU.S.A.,section810oftheNationalElectrical
Code,ANSI/NFPANo.70-1987,providesinforma-
tiononthepropergroundforthemastandsup-
portingstructure,groundforthelead-inwiretoan
antennadischarge unit, and size of ground con-
ductors,locationofantenna-dischargeunit,con-
nectiontogroundingelectrodes,andrequirements
forthegroundingelectrode.
Forgroundwire:
a)UseNo.10AWG(5.3mm2)copperNo.8 AWG
(8.4mm2)aluminum,No.17AWG(1.0mm2)
copper-cladsteel,bronzewire,orlargerasground
wire.
b)Secureantennalead-inandgroundwiresto
housewithstand-offinsulatorsspacedfrom4 feet
(1.22meters)to6 feet(1.83meters)apart.
c)Mountantennadischargeunitascloselyas
possibletowherelead-inentershouse.
d)UsejumperwirenotsmallerthanNo.6 AWG
(13.3mm2)copperorequivalentwhenseparate
antennagroundingelectrodeisused.

15.NonusePeriods- Unplugthepowercordfromthe
ACpoweroutletwhenleftunusedfora long
periodoftime.
16.DamageRequiringService- Servicemustbeper-
formedbyqualifiedservicepersonnelwhen:
A.Thepowersupplycordortheplughasbeen
damaged;or
B.Objectshavefallen,orliquidhasbeenspilled
intotheinstrument;or
C.Theinstrumenthasbeenexposedtorain;or
D.Theinstrumentdoesnotappeartooperate
normallyorexhibitsa markedchangeinperfor-
mance;or
E.Theinstrumenthasbeendropped,orthe
enclosuredamaged.
17.Servicing- Donotattempttoservicebeyondthat
describedintheoperatinginstructions.Allother
serviceshouldbereferredtoqualifiedservice
personnel.
18.GroundingorPolarization- Donotdefeatthein-
herentdesignfeaturesofthepolarizedplug.Non-
polarizedlinecordadaptorswilldefeatthesafely
providedbythepolarizedACplug.
19.CAUTION:TOPREVENTELECTRICALSHOCKDO
NOTUSETHIS(POLARIZED)PLUGWITHANEX-
TENSIONCORD,RECEPTACLEOROTHEROUTLET
UNLESSTHEBLADESCANBEFULLYINSERTEDTO
PREVENTBLADEEXPOSURE.
NotetoCATVsysteminstaller:
ThisreminderisprovidedtocalltheCATVsystem
installer'sattentiontoArticle820-22oftheNEC
thatprovidesguidelinesforpropergrounding
and,inparticular,specifiesthatthecableground
shallbeconnectedtothegroundingsystemof
thebuilding,asclosetothepointofcableentry
aspractical.
ATTENTION:POURPREVENIRLESCHOCSELEC-
TRIQUESPASUTILISERCETTEFICHEPOLARISEE
AVECUNPROLONCATEUR,UNEPRISEDE
COURANTOUUNEAUTRESORTIEDECOURANT,
SAUFSILESLAMESPEUVENTETREINSEREESA
FOND SANS EN LAISSER AUCUNE PARTIE A
DECOUVERT.
Thelightningflashwitharrowhead,withinan
equilateraltriangle,isintendedtoalerttheuserto
thepresenceofuninsulated"dangerousvoltage"
withintheproduct'senclosurethatmaybeofsuffi-
cientmagnitudetoconstitutea riskofelectricshock
topersons.
CAUTION:TOPREVENTTHERISKOFELECTRIC
SHOCK,DONOTREMOVECOVER(ORBACK).NO
USER-SERVICABLEPARTSINSIDE.REFERSERVICING
TOQUALIFIEDPERSONNEL.
Theexclamationpointwithinanequilateraltriangle
isintendedtoalerttheusertothepresenceof
importantoperatingandmaintenance(servicing)in-
structionsintheliteratureaccompanyingthe
appliance.
Theserialnumber,purchasedate,andMclntosh
LaboratoryServiceContractnumberareimportantto
youforpossibleinsuranceclaimorfutureservice.
Recordthisinformationhere.
SerialNumber
PurchaseDate
ServiceContractNumber
Uponapplication,MclntoshLaboratory
providesa ServiceContracttotheoriginal
purchaser.YourMclntoshAuthorized
ServiceAgencycanexpediterepairswhen
youpresenttheServiceContractwiththe
instrument.
CopyrightMCMLXXXVIII© byMclntoshLaboratoryInc.
RISKOFELECTRICSHOCK
DONOTOPEN
CAUTION

Contents
INTRODUCTION3
FRONTPANEL4
HANDHELDREMOTE5
CONNECTIONS6,7,8,9
CONNECTIONS10,11,12
CONNECTIONS13
ACCESSORIES14
PERFORMANCELIMITS15
BLOCKDIAGRAM16,17
YourCR7 andCR8 RemoteControlwillgiveyou
manyyearsofsatisfactoryperformance.Ifyouhave
anyquestions,pleasecontact,
CUSTOMERSERVICE
MclntoshLaboratoryInc.
2ChambersStreet
Binghamton,NewYork13903-9990
Phone:[phone]
TakeAdvantageof3 Yearsof
ContractService.. .
FillintheApplicationNOW.
An application torA THREE YEAR SERVICE CONTRACT is included with thismanual.
Thetermsofthecontractare:
I.Iftheinstrumentcoveredbythiscontract
becomesdefective,Mclntoshwillprovideallparts,
materials,andlaborneededtoreturnthe
measuredperformanceoftheinstrumenttothe
originalperformancelimitsfreeofanycharge.The
servicecontractdoesnotcoveranyshippingcosts
toandfromtheauthorizedserviceagencyorthe
factory.
2.AnyMclntoshauthorizedserviceagencywill
repairallMclntoshinstrumentsatnormalservice
rates.Toreceivethefreeserviceundertheterms
oftheservicecontract,theservicecontractcer-
tificatemustaccompanytheinstrumentwhen
takentotheserviceagency.
3.Alwayshaveservicedonebya Mclntoshauthoriz-
edserviceagency.Ifthe instrument ismodified or
damaged as a result of unauthorized repair the
service contract will becancelled. Damagebyim-
properuseormishandlingisnotcoveredbythe
servicecontract.
4.Theservicecontractisissuedtoyouasthe
originalpurchaser.Toprotectyoufrom
misrepresentationthiscontractcannotbetransfer-
redtoa secondowner.
5.UnitsinoperationoutsidetheUnitedStatesand
CanadaarenotcoveredbytheMclntoshFactory
ServiceContract,irrespectiveoftheplaceofpur-
chase.NorareunitsacquiredoutsidetheUSAand
Canada,thepurchasersofwhichshouldconsult
withtheirdealertoascertainwhat,ifany,service
contractorwarrantymaybeavailablelocally.
2
MclNTOSHTHREEYEARSERVICECONTRACT

TheMclntoshinfraredRemoteControlSystempro-
videsunusualversatilitywithoperatingsimplicity.It
isa systemwhichprovidesremotecontrolinone
listeningareayetcanbeexpandedtoprovidein-
dividualsourceselectionwithindependentvolume
settingsinuptofiveadditionalareas.Ineachof
theseareas,whenconnectedtoa Mclntoshtuner,
designedtoconnecttotheinfraredremotecontrol
system,anda Mclntoshcompactdiscplayer:
1)youcanturnontheACpowertothelocalarea
orturnofftheACpowerforthelocalareaonly
orforallareas;
2)youcanselectthelisteningsoundsource
(tuner,compactdisc,orpreamplifier)forthe
localareawhileotherareascanchoosetheir
listeningsourceindependently;
3)youcanadjustthevolumeinthelocalareaand
notaffectthevolumeinotherareas;
4)whenthetuneristhesoundsource,youcan
selectthestationsyouwishtohearoneither
AMorFManddependingonthetuner,scan
thepresetstationsoneitherAMorFMor
searchtheentireAMorFMband;
5)Whenthecompactdiscplayeristhesound
source,youcanputtheCDplayerintheplay
mode,shifttothenexttrackortheproceeding
trackonthediscorstoptheplayfromthedisc;
or
6)youcanselectthepreamplifierasa program
sourcewithallofitsconnectedsources.
ToillustratethecontrolversatilityoftheMclntosh
infraredRemoteControlSystem,withthehand-held
remotecontroller,youcanturnontheACpowerfor
thatequipment,whichfeedsprogrammaterialtoa
listeningarea,withoutturningontheACpowerfor
otherareas.Whileyouarclisteningtoa compact
discinthemainarea,someoneinanotherareacan
turnontheACpowerfortheirareaandelectto
listentoFM.Whenyouarethroughlisteninginyour
area,youcan turnofftheACpowertoyourarea
whilethelistenerintheotherareacontinuesto
listentothetuner.Eachareacanadjusttheirown
volumewithoutaffectingtheotherareasvolume.In
addition,theACpowertoallareascanbeturnedoff
bya hand-heldcontrollerinanyarea.
Yourlisteningcommandsareexecutedbypressing
theselectedbuttonsonthehand-heldremotecon-
troller.Whenyoupressa buttonthecontroller
transmits,viaaninfraredbeam,a twelvebitcom-
mandsignal.Thereceiverforthesesignalsisanin-
fraredsensoronthefrontoftheCR7 remotecon-
trol module orthe Mclntosh R607 Remote Sensor.
Remotesensorsaredesignedtobeinstalledinan
electricalswitchboxforinwallorceilinginstallation.
Ordinaryvideodistributioncable,RG-59/U,connects
theremotesensortotheMclntoshinfraredControl
Modules.
TheCR8containstheinterconnectingcircuits,the
remotestationdatadecoderandswitchfacilitiesfor
asecondorremotearea.Theonlyfrontpanelin-
dicatorisa redLEDwhichlightswhentheremote
areaACpoweristurnedon.
INTRODUCTION3

Thetouch-buttonsontheblackanodizedaluminum
frontpane!oftheCR7controlACpowertothelocal
area,sourceselection,systemmuteandvolume.In
theupperrightisaninfraredsensorwhichreceives
thecontroldatatransmittedbythehand-heldremote
controller.Inadditiontothetouch-buttonsonthe
CR7,thesefunctionsandmore,canbeinitiatedby
thehand-heldremotecontroller.
POWER
TheredPOWERtouch-buttonontheCR7andthe
POWERbuttonontheremotecontrolturntheAC
poweronorofftothelocalarea.WhenACpoweris
turnedon,thesystemswitchesautomaticallytothe
tuner,withvolumesetto40dBbelowfullvolume.
Thestationheardwillbethelastonetunedwhenthe
systemwasturnedoff.A greenLEDabovetheTUNER
touch-buttonwilllight.ACpowertothelocalareais
turnedoffwhenthePOWERbuttononeitherthe
hand-heldcontrollerortheCR7ispressed.Toturn
offACpowerinallareasfirstturnofftheACpower
locallybypressingPOWERfollowedbypressingboth
VOLUMEandVOLUMEsimultaneously.
SOURCESELECTION
Tolistentothecompactdiscplayer,thetuneror
thepreamplifier,touchthecorrespondingbuttonon
thefrontpaneloronthehand-heldremotecon-
troller.A greenLEDabovethetouch-buttonwilllight
toindicatethesourceselected.
MUTE
Shouldyoudesiretosilencethesystembriefly,
touchtheMUTEbuttononeithertheCR7orthe
remotecontrol.A redLEDabovetheMUTEbutton
willlight,andtheprogramwillbesilenced.Tohear
theprogramagain,touchtheMUTEbuttona second
time.TheredLEDwillgooutandtheprogramwill
beheard.
VOLUME
VolumemaybeadjustedbyusingtheVOLUME
orVOLUMEbuttonsonthefrontpaneloronthe
remotecontrol.Adjustmentofthevolumeisperform-
edbyanelectronicallyswitched,precisionladderat-
tenuaior.TheMclntoshelectronicprecisionladderat-
tenuatoradjustsvolumebyC2MOStransistorswit-
chesthatselecttherightcombinationsofhighlyac-
curatedepositsofresistivematerial.Theentirerange
ofvolumeadjustmentis68dBin2 dBincrements.
Leftandrighttrackingiscontrolledtoa fractionofa
dB.Becausethevolumecontroldoesn'thavemoving
parts,thevolumeadjustmentcannotbemisaligned.
Unlikeordinaryvoltagecontrolledelectronicvolume
controls,theMclntoshprecisionladderattenuator
supportsthedistortion-free,low-noiseperformanceof
theMclntoshproducts.
SENSOR
TheinfraredsensorislocatedabovetheVOLUME
buttons.Whenusingthehand-heldcontrollera red
LEDinthecenterofthesensorwillflashtoindicate
receivingthetransmission.
4FRONTPANEL

USINGTHEHANDHELDREMOTECONTROLLER
WhenTheHR7(handheldcontroller),isactivated
bypressingbuttonsonthekeypad,ittransmitsa
twelvebitcodeonaninfraredcarrier.Whenreceiv-
edbytheinfraredsensor,thetransmitteddatais
decodedintheRemoteControlModule.Thein-
fraredsensorhasbeendesignedfora broadrecep-
tionanglesoitisusuallynotnecessarytopointthe
hand-heldcontrollerdirectlyatthesensor.
POWER
TurnstheACpoweronorofftothelocalarea.
CD
SelectstheMclntoshCompactDiscPlayerasthe
sourceofsound.
PLAYPressbutton1 tolistentotheCDon
theplayer,
NEXTPressbutton2 tomovethelaserpen
tothenexttrackonthedisc.Ifyou
press2 (NEXT)whileplayingthelast
trackonthediscthelaserpendoes
notmoveandthelasttrackcontinues
toplay.
BACKPressbutton3 tomovethelaserpen
totheproceedingtrackonthedisc.If
youpress3 (BACK)whileplayingthe
firsttrackthelaserpendoesnotmove
andthefirsttrackcontinuestoplay.
STOPPressbutton4 (STOP)tostopplay
beforetheendofthedisc.
TUNER
SelectstheMclntoshtunerasthesourceofsound.
1Thru7.. Pressoneofthenumberedbuttonsto
recallfromtheelectronicmemoryin
thetunerthepresetAMorFMstation
assignedtothenumberedbutton,
FMPresstheFMbuttontoswitchtothe
FMcircuitsofthetuner.
AMPresstheAMbuttontoswitchtothe
AMcircuitsofthetuner.
SEARCH... PresstheSEARCHbuttontopreview
for5 secondseachoftheseven
stationspresetinthetunerelectronic
memory.Tostoponanystationpush
the SEARCH button once more. Inthe
SEARCHmode,betweenstationnoise
isautomaticallymuted.
SCANPresstheSCANbuttontoautomatically
tunetothenextstationupthe
selectedbroadcastband.IntheSCAN
modebetweenstationnoiseanddis-
tant,weakstationsareautomatically
muted.
PREAMP
Selectsthesystempreamplifierasthesourceof
sound.Allofthecontrolsandsourcesavailableon
thepreamplifierareavailableforuse.
MUTE
PressbuttonMUTEtosilencethelocalareasound.
A second touch will restore the sound.
VOLUME
PressbuttonsVOLUMEorVOLUMEtoadjust
the loudness in yourarea only. AC power toall areas
canbeturnedoff,if,afterpressingPOWER,both
VOLUMEbuttonsarepressedsimultaneously.
BATTERIES
TheremotecontrolrunsontwoAA,1.5voltbat-
teries.Slideopenthecoveronthebackofthe
remotecontrolandinsertthebatteriesasshownin
thediagraminthebatterycompartmentthenslide
thecoverclosedagain.
Batterylifeisnormallyaboutoneyear.Removethe
batteriesassoonastheyaredeadtopreventdamage
bypossiblebatteryleakageorincasetheremote
controlisnottobeusedtora lengthoftime.
HANDHELDREMOTE5

FIGURES1 and2
Theseillustratetheinterconnectionofequipmentto
provideremotecontrolinonearea,themainarea.In
thisconfigurationtheCR7becomesthecenterofcon-
trolfora preamplifier,a Mclntoshremotecontrollable
tuner,a Mclntoshcompactdiscplayeranda power
amplifier.TheMclntoshCR7providesswitchingtoin-
terconnectandcontrolthefunctionsoftheseunits.
Eachdiagram,fromFigure3 on,illustratestheexpan-
sionofthebasicsystemtoadditionalareas.The
CR7/CR8willprovidefacilitiesforupto5 remoteareas
inadditiontothemainlisteningarea.
CONTROLCABLES
IntheCR7theinfraredisdecodedtocontrolthe
varioustunerandcompactdiscfunctions.Provided
withtheCR7aretwocableswhichconductthecon-
troldatafromtheCR7toa Mclntoshtuneranda
Mclntoshcompactdiscplayer.Thecablewiththe15
pincomputertypeconnectorsoneachendconnects
theMclntoshtunertotheCR7.Insertoneendinto
theREMOTECONTROLsocketonthetunerandthe
otherintotheTUNERCONTROLsocketontheCR7.
Thecaptivescrewsoneachendoftheconnector
mustbetightenedtopreventtheplugfromdiscon-
necting.Thesecondcablehas7 pinDINconnectors
oneachend.ItconnectstheMclntoshCompactDisc
PlayertotheCR7.InsertoneendintotheREMOTE
socketonthecompactdiscplayerandtheotherinto
theCDCONTROLsocketontheCR7.
AUDIO
Useshieldedcablestoconnectbetweenthesignal
sources,thepoweramplifierandtheCR7.Tominimize
thepossibilityofhumtheshieldedcablesshouldbeof
parallelconstructionorlooselytwistedtogetherand
locatedawayfromspeakerconnectingcablesandAC
powercords.Becertaintousegoodqualityshielded
cables.Yourdealercanbestadviseyouonthekind
and length of cables that will best suit your installation.
OUTPUTL andR
TheOUTPUTL andR jacksareconnectedtothe
poweramplifierinputwithshieldedcable.Connect
theOUTPUTL jacktothepoweramplifierleftinput
andtheOUTPUTR jacktothepoweramplifierright
input.
TUNERL andR
TheTUNERL andR jacksareconnectedtoa Mcln-
toshtuneraudiooutputwithshieldedcable.Connect
acablefromthetunerleftchannelaudiooutput
totheCR7TUNERL jack.Connecta cablefromthe
tunerrightchannelaudiooutputtotheTUNERR jack.
CDL andR
TheCDL andR jacksareconnectedtoa Mclntosh
compactdiscplayerwithshieldedcable.Connecta
cablefromtheCDplayerleftoutputtotheCDL
jack.Connecta cablefromtheCDplayerrightout-
putjacktotheCDR jack.
AC POWER:
PlugtheACpowercordintoa 120volt60Hzwall
outlet.Theplugbladesarcpolarizedsobecertain
theplugisfullyinsertedintheoutlettoprevent
bladeexposure.
CAUTION:TOPREVENTELECTRICSHOCK,DONOT
USETHE(POLARIZED)PLUGONTHISUNITWITH
ANEXTENSIONCORD,RECEPTACLE,OROTHER
OUTLETUNLESSTHEBLADESCANBEFULLYIN-
SERTEDTOPREVENTBLADEEXPOSURE.
TwotypesofACpoweroutletsareprovidedonthe
backpaneloftheCR7.Twoareblackandoneisred.
TheblackoutletsareswitchedonoroffwhentheCR7
isturnedonoroff.Theredoutletisonatalltimes.
Thepowercapacityofalltheoutletsis1750watts.
TheACpowercordfromthepreamplifiermustbe
pluggedintothePREAMPACoutletontherearof
theCR7.TheACpowercordfromthetunerand
compactdiscplayerareconnectedtoswitchedAC
outletsonthepreamplifier.
TheACpowercordfromthepoweramplifiermust
bepluggedintothePOWERAMPoutletontherear
orthe CR7.
REMOTESENSOR
ShouldtheCR7frontpanelinfraredsensorbehid-
denfromviewwheninstalled,asina cabinet,a Mcln-
toshR607RemoteInfraredSensorcanbeused.Figure
2showstheadditionofa MclntoshR607RemoteSen-
sorwhichcanbefittedinanordinaryelectricalswitch
boxandinstalledintheceilingorwall.TheR607Re-
moteSensorisconnectedtotheCR7RemoteSYSTEM
SENSORconnectorwithupto300feetofRC-59/U
cableanda typeF connector.Choosea locationfor
theremotesensorthatwillnotbeobstructedbyfur-
niture,drapes,etc.andwillnotbeexposedtoexces-
siveamountsofdaylight.Obstructionswillinterfere
withthe"lineofsight"infraredtransmissionfromthe
hand-heldcontroller,whileexcessiveinfraredfrom
daylightcanaffecttheperformanceandsensitivityof
theRemoteControlSystem.
6CONNECTING

FIGURE1
FIGURE2
CONNECTIONS7

FIGURE3
Figure3 illustratestheinterconnectionofequip-
menttoprovideremotecontrolinthemainlistening
areaandoneremotelisteningarea.TheMclntosh
CR7controlsthesystemsourceandvolumeinthe
mainareawhiletheCR8performsthesamefunc-
tionsfortheremotearea.Becauseeachadditional
remoteareaaddedtothesystemhasitsownpower
amplifier,powerandperformanceareno!degraded
inthemainlisteningarea.
CONNECTINGFOR2 AREAREMOTECONTROL
IncludedwiththeCR8isa cablewith25pincom-
puterconnectorsoneachend.Connectoneendofthis
cabletotheTOAREACONTROLLERsocketontheCR7
andtheotherendtotheAREACONTROLLERINPUT
socketontheCR8.Thecaptivescrewsoneachendof
theconnectormustbelightenedtopreventtheplug
fromdisconnecting.Itconductsthecontrolsignals
whichoperatethevarioussourceandvolumefunctions
intheremotearea.
CR8
TheRemoteinfraredsensor,theR607,isinstalled
inthesecondareaandconnectedtotheCR8with
RC-59/Ucable.Choosea locationfortheremotesen-
sorthatwillnotbeobstructedbyfurniture,drapes,
etc.andwillnotbeexposedtoexcessiveamountsof
daylight.Obstructionswillinterferewiththe"lineof
sight"infraredtransmissionsfromthehand-held
controller,whileexcessiveinfraredfromdaylightcan
affecttheperformanceandsensitivityoftheremote
controlsystem.
ACPOWER
Toprovidethe1750wattscapacityoftheCR8AC
outlets,plugtheACpowercordoftheCR8intoan
ACoutletseparatefromtheoneprovidingpowerto
theCR7.SincemostACpowercircuitsareratedfor
15ampers(1800watts)itisnecessarytoplugtheCR8
ACpowercordintoanoutletona circuitseparate
fromtheonefeedingpowertotheCR7.Theplug
bladesarepolarizedsobecertaintheplugisfullyin-
sertedintheoutlettopreventbladeexposure.
CAUTION:TOPREVENTELECTRICALSHOCK,DO
NOTUSETHE(POLARIZED)PLUGONTHISUNIT
WITHANEXTENSIONCORD,RECEPTACLE,OR
OTHEROUTLETUNLESSTHEBLADESCANBEFULLY
INSERTEDTOPREVENTBLADEEXPOSURE.
TwotypesofACpoweroutletsareprovidedon
thebackpanel,oneblackandonered.Theblack
outletisswitchedonoroffwhentheCR8isturned
onoroff.Theredoutletisonatalltimes.
TheACpowercordfromthepoweramplifierto
theareacontrolledbytheCR8mustbepluggedinto
thePOWERAMPoutletontherearoftheCR8.
8CONNECTING

FIGURE3
CONNECTING9

FIGURE4
Figure4 illustratestheinterconnectionofequip-
menttoprovidemultipleareacontrolcapabilityfor
thesystemshowninFigure3.Byaddinga Mclntosh
R606MULTIPLESENSORADAPTERuptosixremote
infraredsensors(MclntoshR 607]canbeadded.Each
sensordataisfedthroughtheR 606totheREMOTE
AREA CONTROLLER. Multiple sensors andtheR 606
maybeusedwitheithertheCR7orCR8,Whenused
withtheCR8intheFigure3 example,outputofthe
R606isconnectedtotheSYSTEMSENSORonthe
CR8andwillcontrolonlythefunctionsoftheCR8.
TheCR7functionswilloperatenormally.Upto300'
ofRG-59/UcanbeusedbetweentheR 606andthe
remotecontrolmodule,anduptoanadditional300'
ofRG-59/UbetweentheR 606andR 607Remote
Sensors.
10CONNECTING

FIGURE5
Figure5 illustratestheinterconnectionofequip-
menttoprovidea tunerasa sourceintheremote
areaindependentofthetunerinthemainarea.The
25pincableprovidedtointerconnecttheCR8with
theCR7isremovedandreplacedwitha cablethat
hasanadditional15pinconnectorandtwoaudio
connectorswithRCAplugs(Part# R617),The15pin
connectorispluggedintotheREMOTECONTROL
socketonthetuner.TheRCAredconnectoris
pluggedinto
AUDIOOUTPUTR andtheRCAblackconnectoris
pluggedintoAUDIOOUTPUTL.Thetunercon-
nectedtotheCR7inthemainareaiscontrolledby
andcanbeheardinonlythemainarea,whilethe
tunerconnectedtortheremoteareaiscontrolledby
andheardonlyintheremotearea.Whena second
tunerisintroduced,additionalremoteareascontroll-
edbyCR8RemoteAreaControllerswillselectthe
secondtunerasitstunersoundsource.
CONNECTING11

FIGURE6
Figure6 illustratestheuseofanexistingvideo
distributionsystemtointerconnecttheremotesen-
sorswitha remotecontrolmodule.Byinsertinga
pairofMclntoshR 615VIDEOCABLEANDDCCON-
TROLADAPTERSintheexistingvideodistribution
system,thevideosignals,theremotecontroldata
andtheDCvoltagestooperatetheremotesensors
canallbeconductedontheexistingRG-59/Uvideo
distributionsystemwithoutanyinteraction.
12CONNECTING

FIGURE7
Figure7 illustratesa systemexpandedtoa main
areaandtwoindependentcontrolremoteareas.One
endofthecablewiththe25pinconnectorsisplug-
gedintothe1starearemoteCR8socketlabelled
TONEXTAREACONTROLLERandtheotherendis
pluggedintothe2ndremoteareaCR8AREACON-
TROLLERINPUTsocket.Uptofiveremoteareascan
beaddedtoa CR7mainareaeachwithindependent
sourceselectionandvolumeadjustment.Ifwanted,
additionaltunerscanbeaddedasinFigure5.
CONNECTING13

R607INFRAREDREMOTESENSOR
R607REMOTESENSORdesignedtobeinstalled
inanelectricalswitchboxforwallorcelling
installation.Ordinaryvideodistributioncable
(RG-59/U)connectstheremotesensortothe
mainequipmentinfraredAREASENSORinput.
R606MULTIPLESENSORADAPTER
AdaptertoconnectuptosixREMOTESEN-
SORS(R607)tothemainequipmentinfrared
AREASENSORinput.Upto300feetof
RG-59/Uvideodistributioncablemaybeused
betweentheR 606andtheAREASENSORin-
putonthemainequipmentandupto300feet
ofRG-59/UmaybeusedbetweentheR 606
andtheMclntoshR 607REMOTESENSOR.
R617CABLETOADD2NDTUNER
TOREMOTESYSTEM
FiveconnectorsterminatetheR 617cable.
Twoare25pincomputertypeconnectors,one
isa 15pincomputertypeconnectorandtwo
areRCAtypeaudioconnectors.TheR 617
cableisusedtoinserta secondtunerthat
maybeoperatedseparately,ina remotearea,
fromthetunerinthemainarea.
R620CABLETOACTIVATESCAN
(MR80—MR500—MAC4200)
TwoconnectorsterminatetheR 620cable.
Oneendhasa 15pincomputertypeconnector
andtheotherenda RCAtypeaudioconnector.
ItconnectsbetweentheMR80,MR500or
MAC4200SCAN(RCA)jackandthemain
systemtunerremotecontrol15pinsocket.
R615VIDEOSIGNALANDDCCONTROLADAPTER
Anexistingvideodistributionsystemcanbe
usedtointerconnecttheremoteareasensors
withthemainequipmentwithoutinterference
whena pairofR 615adaptersareused.
R603ADAPTERPANEL
IheCR7orCR8canbeinstalledina cabinet
panelwiththeR 603ADAPTERPANELUsap-
pearanceanddimensionsarecompatiblewith
Mclntosh5"highfrontpanels.
14ACCESSORIES

CR7
FREQUENCYRESPONSE
+0,-0.5dBfrom20Hzto20KHz
RATEDOUTPUTVOLTAGE
2.5V
SENSITIVITY
AMinput,0.775Vfor2.5Vratedoutput
TOTALHARMONICDISTORTION
0.007%maximumfrom20Hzto20kHz
atratedoutput
SIGNALTONOISERATIO
-88dBbelowratedoutput(-73dBIHF)
-98dBbelowratedoutput(-84dBIHF)
(Aweighted)
MAXIMUMVOLTAGEOUTPUT
5voltsfrom20Hzto20kHz
MAXIMUMINPUTSIGNAL
5volts
INPUTIMPEDANCE
100Kohms
GENERALINFORMATION
SEMICONDUCTORCOMPLEMENT
15BipolarTransistors
6FieldEffectTransistors
26IntegratedCircuits
24Diodes
5LightEmittingDiodes
ACPOWEROUTLETS
1unswitched,red
2switched,black
1750Wtotal
POWERREQUIREMENTS
120V,50/60Hz,8 watts
MECHANICALINFORMATION
SIZE
Width:83/16inches(20-8cm)
Height:31/16inches(7.8cm)
Depth:91/2inches(24.1cm)
FINISH
Frontpanel:blackanodizedaluminumwith
whitenomenclature
Chassis:blackpaint
WEIGHT
6pounds(2.7kg)net,
8pounds(3.6kg)inshippingcarton.
CR8
FREQUENCYRESPONSE
+0,- 0.5dBfrom20Hzto20KHz
RATEDOUTPUTVOLTAGE
2.5V
SENSITIVITY
Allinput,0.775Vfor2.5Vratedoutput
TOTALHARMONICDISTORTION
0.007%maximumfrom20Hzto20kHz
atratedoutput
SIGNALTONOISERATIO
88dBbelowratedoutput(-73dBIHF)
-98dBbelowratedoutput(-84dBIHF)
(Aweighted)
MAXIMUMVOLTAGEOUTPUT
5voltsfrom20Hzto20kHz
MAXIMUMINPUTSIGNAL
5volts
INPUTIMPEDANCE
100Kohms
GENERALINFORMATION
SEMICONDUCTORCOMPLEMENT
12BipolarTransistors
6FieldEffectTransistors
25IntegratedCircuits
18Diodes
1LightEmittingDiode
ACPOWEROUTLETS
1unswitched,red
1switched,black
1750Wtotal
POWERREQUIREMENTS
120V,50/60Hz,8 watts
MECHANICALINFORMATION
SIZE
Width:83/16inches(20.8cm)
Height:31/16inches(7.8cm)
Depth:91/2inches(24.1cm)
FINISH
Frontpanel:blackanodizedaluminumwith
whitenomenclature
Chassis:blackpaint
WEIGHT
6pounds(2.7kg)net,
8pounds(3.6kg)inshippingcarton.
PERFORMANCELIMITS15

CR7
BLOCK
DIAGRAM
16BLOCKDIAGRAM

CR8
BLOCK
DIAGRAM
BLOCKDIAGRAM17