McIntosh C108 - Manual de usuario

INSTRUCTIONMANUAL

MclNTOSHMODELC108

AUDIOCOMPENSATOR

-1 -

INSTRUCTIONMANUAL

McINTOSHMODELC-108

AUDIOCOMPENSATOR

TheMcIntoshAudioCompensatorisa completecontrolunitforprofessional

andhomeentertainmentsystems.Fiveinputchannelsareprovided;threewhich

produceconstantamplificationovertheaudiospectrumof20cyclesto20,000

cycles,andtwowhichareequalizedforusewithmagneticphonographcartridges.

TheC-108AudioCompensatorrequiresanexternalpowersource.A

McIntosh50W-2,20W-2,orA-116PowerAmplifier,orD-101powersupplymay

beusedforthispurpose.

PHYSICALSPECIFICATIONS

UNIT

C-108

C-108a

(C-108inwooden

enclosure)

C-108h

(C-108withcabinet

mountingpanel

11"x 4-1/4")

DIMENSIONS

10"x 3-1/2"x 7-1/2"

11-1/2"x 4-1/4"x 8"

10"x 3-1/2"x 7-1/2"

WEIGHT

6lbs.

7lbs.

6lbs.

INSTALLATIONWITHMcINTOSHAMPLIFIERS

1.Connectspeakertooutputofamplifier.

2.InsertPowerAmplifierlinecordintosocketlabeled

"PWRAMP"onC-108.

3.Insertinter-unitcableofC-108intosocketlabeled

"PRE-AMP"onpoweramplifier.

-2 -

4.Turnthepoweramplifiervolumecontrol(50W-2or

20W-2)tofullvolumesetting.Thevolumecontrolon

theA-116,30wattpoweramplifier,isinoperative

whenthepre-ampsocketisusedandthisstepmaybe

disregardedwhenusingthisamplifier.

5.TurnthevolumecontrolontheC-108to"OFF".

6.InsertthepowercordoftheC-108intoa 117V.A.C.

poweroutlet.

7.TurntheselectorswitchoftheC-108to"5"andbass

fullyclockwise.

8.TurnthevolumecontrolontheC-108clockwiseuntil

thepowerswitchisactivated.

9.Allowthirtysecondsforwarm-up,thenadvancethe

volumecontroltofullvolume.

10.Adjustthehumcenteringpotentiometeronthepower

amplifierforminimumhum.

11.TurnthevolumecontroloftheC-108toa minimum

andallothercontrolstothedesiredsettings.

12.Insertinputsintotheirproperjacksattherearof

theC-108.

INSTALLATIONWITHMcINTOSHD-101POWERSUPPLY

1.Connectspeakertopoweramplifier.

2.Insertpoweramplifierpowercordinsocketlabeled

"PWRAMP"onD-101.

3.InsertD-101powercordintosocketlabeled"PWR

AMP"oftheC-108.

4.Insertinter-unitcableofC-108intosocketlabeled

"PRE-AMP"oftheD-101.

5.Connect"OUTPUT"ofD-101totheinputofpower

amplifier(socketlabeled"PRE-AMP"onMcIntosh

PowerAmplifier).J-107seriescablesmaybeused

forthispurpose.

-3 -

6.Followsteps4 through9 above.

7.AdjustthehumcenteringpotentiometerontheD-101

forminimumhum.

8.Followsteps11and12above.

INPUTCONNECTINGPROCEDURE

TheinherenthumandnoisevoltagesappliedtotheinputoftheC-108is

-110DBM,orlessthan3 microvolts.Toavoidloweringthesignaltohumratio

oftheC-108byaddinghumvoltagestotheinput,extremecaremustbetakenin

itsinstallation.Weofferthefollowingrecommendationsasa guidetoinstalla-

tion:

1.ConnectinputtoC -108asoutlinedonthetable

below.

CHANNEL

1&2

FORUSEWITH

AM-FMTuner

WireReproducer

TapeReproducer

CrystalPickup

CrystalMicrophone

LowImpedance

Microphone

HighLevelMagnetic

cartridges.(Ter-

minatedfor

PickeringCartridge)

LowLevelmagnetic

cartridges.

(Terminatedfor

Audaxpolyphase

cartridgeand

WeathersFM

cartridge.)

INPUT

(For3 v.output)

Min.Max.

.1V20V.

12MV.60MV.

30MV..15 V.

12MV.60MV.

GAIN

30db

48db

40dbfrom

Turn-overto

20,000cps.

48dbfrom

Turn-overto

20,000cps.

FREQUENCY

RESPONSE

(20-20,000cps.)

+.25db

Risesatthe

rateof6 db

peroctavebe-

lowturn-over

frequencyto

20cps.

REMARKS

Inputlevelsinex-

cessof. 1Vshould

bereducedby

potentiometeron

backpanel.

Inputnottoexceed

60MV.

Cartridgeofother

manufacturersmay

beusedbutinput

mustbeterminated

asrecommendedby

manufacturer.Alter

R6&R7orR8.

-4 -

2.TheC-108andmagneticphonographcartridgesshould

bemountedatleasttwofeetfrompowertransformers.

3.Inter-unitcablesprovidea completegroundsystem.

Alternategroundwirescreategroundloopswhichwill

usuallyincreasehumlevel.

4.Theheatersofthe12AX7tubesusedintheC-108are

returnedtogroundthrougha humbalancingpotentiom-

eterinthepoweramplifier(orD-101powersupplyif

used).Thiscontrolrequiresaninitialadjustmentfor

minimumhum,andshouldbereadjustedeachtimeone

ormoretubesarereplaced.

5.GroundingtheturntablemotorframetotheC-108

chassisneartheinputjacksmayreducethehumlevel

onthephonographchannels.

TheoutputstageoftheC-108isa cathodefollower.Thegeneratorresis-

tanceofthistubeis600ohms,butshouldnotbeloadedwitha capacitivereactance

oflessthan10,000ohmsat20,000cycles.Thisisthereactancepresentedby

750micromicrofarads,andisequaltothatofa cable30feetlongandhavinga

capacityof25mmfperfoot.UnderspecialcircumstanceswheretheC-108must

beconnectedtothepoweramplifierbya longercable,eitherlowercapacity

mustbeemployed,ortheoutputmustbereduced.

OPERATION

REDUCETURNTABLERUMBLE,

ORLOWFREQUENCYDISTURB-

ANCESONALLCHANNELS.

SELECTDESIREDBASS

COMPENSATIONON

CHANNELS4 AND5.

SELECTDESIREDTREBLE

ROLL-OFFONALLCHANNELS.COMPENSATEFOREAR

CHARACTERISTICAT

REDUCEDVOLUMEON

ALLCHANNELS.

SELECTANYONEOFFIVE

INPUTCHANNELS.UNUSED

CHANNELSAREGROUNDED

TOPREVENTCROSSTALK.CONTROLBASSRESPONSE

ONALLCHANNELS.CONTROLTREBLERESPONSE

ONALLCHANNELS.

CONTROLVOLUMEON

ALLCHANNELS.ON-OFF

CONTROLFORC-108

ANDITSPOWERSUPPLY.

Channels1 and2:

Channels1 and2 areeachterminatedbya potentiometer.Thesepotentiom-

etersarescrewdriveradjustmentsonthebackpanelandshouldbeusedtoreduce

signalinputtothesechannelsifinexcessof. 1 volts.Correctadjustmentoccurs

whenthesoundlevelofchannels1 and2 isequivalenttothatofchannels4 or5.

Highimpedancesources,suchascrystalmicrophonesandthedetectoroutputof

tuners,maybeconnecteddirectlytothesechannelssincetheyhaveaninput

impedanceof660,000ohms.

Channel3:

Channel3 isa highgainmicrophonechannelhavinganinputimpedanceof

100,000ohms.Theinputtothischannelshouldnotexceed60MV.Lowimpedance

microphonesinconjunctionwithaninputtransformer,suchastheMcIntoshM-107

(ATI-1),maybeusedonthischannel.

Channels1,2 and3 provideflatamplificationfrom20cyclesto20,000

cycleswiththebassandtreblecontrolsintheircentralposition,andthetreble

compensationswitchesintheupposition.Thesecontrolsmaybeusedtoalterthe

responseofthesechannelsasshownonpage9.

Channels4 and5:

Channels4 and5 areequalizedforusewithmagneticphonographcartridges.

Thedegreeofequalizationmaybevariedwiththebassandtreblecompensation

switchesasshownonpages8 and9.Thebassandtrebletonecontrolsmaybe

usedto supplementthesecompensationswitches.

Theinputsofchannels4 and5 havebeenterminatedtogiveflatresponsefrom

thePickeringandAudaxPolyphasecartridgesrespectively.Ifcartridgesofother

manufacturersareused,theterminatingresistorsshouldbereplacedbyvalues

recommendedbythemanufacturer.Forexample,the47,000ohmterminating

resistanceofchannel5 shouldbereplacedby12,000ohmsiftheG.E.reluctance

cartridgeisused.IfitisdesirablenottoaltertheC-108an18,000ohmresistor

maybeconnectedacrosstheG.E.cartridgeinthelinetothecartridge.

- 5 -

TheAuralCompensatormaybeusedtocompensatefortheresponsecharac-

teristicoftheearasloudnessisadjusted.Theresponseofthiscontrolis

plottedonpage9.Thiscontrolshouldnotbeuseduntilallotheradjustments

havebeenmade.

TheRumbleFiltermaybeusedtoeliminateturntablerumbleandotherlow

frequencydisturbances.Theresponseofthiscontrolisplottedonpage9.

AnadditionaloutputjackhasbeenprovidedattherearoftheC-108.This

jackmaybeusedforrecordingtapewhilethesignalisbeingmonitoredbythe

poweramplifier.Theselectorswitch,rumblefilter,andbasscompensation

switchesareeffectiveattheauxiliaryoutput.

GUARANTEE

WeguaranteetheperformanceoftheC-108andthemechanicalandelec-

tricalworkmanshiptobefreeofseriousdefectsfora periodof90dayswiththe

exceptionthatwedonotguaranteethetubesandfiltercapacitorbeyondthatof

theirmanufacturers.

McINTOSHLABORATORY,INC

320WaterStreet

Binghamton,NewYork

—6—

-7 -

Forconvenienceofinstallation,wehavemadethefollowingconnectorsand

cablesavailablefromyourdealer.

J-100OutputPlug

J-101Inputplug

*J-102J-100Outputplugfittedwith6 footlengthoftwo

conductorcable,connectedfor4 ohmoutputof

McIntosh50W-2or20W-2.

*J-103SameasJ-102,butconnectedfor8 ohms.

*J-104SameasJ-102,butconnectedfor16ohms.

*J-105SameasJ-102,butconnectedfor32ohms.

*Forusewith20W-2or50W-2Amplifiersonly.

J-109J-100outputplugfittedwith6 footlengthoftwo

conductorcableconnectedfor4 ohmoutputof

McIntoshA-116.

J-110SameasJ-109,butconnectedfor8 ohms.

J-111SameasJ-109,butconnectedfor16ohms.

J-106SameasJ-102,butconnectedfor600ohms,for

usewith50W-2,20W-2orA-116.

J-107J-101inputplugfittedwith6 feetof25MMF

capacityperfootcableandphonopinjack.For

2.5Vinputof50W-2,20W-2,orA-116.

J-107aSameasJ-107,but12ft.long.

J-107bSameasJ-107,but18ft.long.

J-107cSameasJ-107,but24ft.long.

J-107dSameasJ-107,but30ft.long.

J-108Phonopinjackfittedwith6 feetof25MMFcapa-

cityperfootcable,withshieldandcenter

conductorstrippedandtinned.

J-112Inputplugfittedwith6 feetof25MMFcapacity

perfootcableandphonopinjack.For. 5Vinput

ofA-116.

J-101

J-103

J-104

J-105

J-106

J-107

J-107a

J-107b

J-107c

J-107d

J-108

J-101

J-100

Otros manuales para C108 -

Tabla de contenidos

Otros manuales de Amplificador de McIntosh

McIntosh

McIntosh C108 - Manual de usuario

McIntosh

McIntosh C200 Manual de usuario

McIntosh

McIntosh C29 - Manual de usuario

McIntosh

McIntosh C200 Manual de usuario

McIntosh

McIntosh MC452 Manual de instrucciones

McIntosh

McIntosh MC-30 Manual de usuario

McIntosh

McIntosh MI128 Manual de usuario

McIntosh

McIntosh MC206 Manual de usuario

McIntosh

McIntosh C41 Manual de usuario

McIntosh

McIntosh MC601 Manual de usuario

McIntosh

McIntosh MC-60 Manual de usuario

McIntosh

McIntosh MA7900 Manual de usuario

McIntosh

McIntosh C2300 Manual de usuario

McIntosh

McIntosh MX 112 Instrucciones de funcionamiento e instalación

McIntosh

McIntosh MA6100 B Manual de referencia

McIntosh

McIntosh MC 502 Manual de usuario

McIntosh

McIntosh C500 Manual de usuario

McIntosh

McIntosh MCC602TM Manual de usuario

McIntosh

McIntosh MCC404 Manual de usuario

McIntosh

McIntosh MHA50 Manual de usuario

McIntosh

McIntosh MA 5100 Instrucciones de funcionamiento e instalación

McIntosh

McIntosh C47 Manual de usuario

McIntosh

McIntosh MA6700 Manual de instrucciones

McIntosh

McIntosh MC2301 Manual de usuario

Manuales populares de Amplificador de otras marcas

ASTRO

ASTRO HVO V40 P Manual de usuario

Marantz

Marantz SUPERSCOPE BLA-545 Instrucciones de montaje

NAD

NAD CI980 Manual de usuario

Technics

Technics SE-CH770 Manual de usuario

Harman Kardon

Harman Kardon HK6300 Manual de usuario

NAD

NAD T975 Manual de usuario

Electro-Harmonix

Electro-Harmonix ENGLISH MUFF’N Manual de usuario

Viatron

Viatron Autrix Manual de usuario

GME

GME GA9800 Manual de usuario

Atlas

Atlas CP700 Manual de usuario

Roland

Roland KC-1000 Manual de usuario

Pyle

Pyle PFMRA350BW Manual de usuario

Advantage

Advantage S-250 Manual de usuario

IRT Electronics

IRT Electronics DVA-3007 Manual de usuario

Dimavery

Dimavery BA-100 Series Manual de usuario

Sony

Sony XM-S400D Manual de usuario

Schertler

Schertler ROY X Manual de usuario

Phonic

Phonic XP 3000 Manual de usuario