McIntosh C26 User manual

C26
SOLIDSTATE
PREAMPLIFIER
Careful,deligentresearch,meaningfuldesignconsidera-
tionsandmeticulousmanufacturingproducesthehighest
qualityequipment.
1.HighFidelity
2.-3.Audio
Conservativeclaimsandspecificationsaretraditional
atMclntosh."Ratedwithhonestyandconservatism. . ."1
"impressiveperformancefigures..."2"Highestqualityof
componentsandconstruction..."³arethewordsused
byindependentexpertswhenwritingofMclntosh.To
assureyouofhighestperformanceeveryadvertisedclaim
isIndividuallyanalyzedandverifiedbyengineersusing
themost sophisticatedandsensitivetestinstrument.
Every unit is individually testedusinginternationallyrec-
ognizedtestprocedures.Inassureyouofgreatestreli-
abilityeverycomponentpartiscarefullytestedandevalu-
atedbyengineersbeforeitisdesignedina Mclntosh.
TheMclntoshC 26
isthefinestexpressionof
PERFORMANCE- RELIABILITY* FLEXIBILITY* BEAUTY

PERFORMANCE,UNLIMITED
PERFORMANCEISA DESIGN
REQUIREMENTATMclNTOSH
LowdistortionisarequirementForhighperfor-
manceina preamplifier.A typicalwaveform
analysisoftheC 26at2,5voltsoutputisa
99.95%perfectreproductionoftheinputwave,
20Hzthrough20,000Hz!
Performanceisimportanttoyourlistening
expectations.Witha Mclntoshyouareassured
ofhighestperformancebecauseMclntoshguar-
anteesperformance.YourC 26mustbecapable
ofmeetingitsadvertisedspecificationsoryour
purchaseprice will be refunded. Mclntosh
promisesperformanceanddeliversperform-
ance.
RELIABILITYISA DESIGNREQUIREMENT
ATMclNTOSH
Endlesshoursareinvestedbyourengineers
carefullyandthoroughlytestingandretesting
individualcomponentparts.Thesehoursarere-
quiredtoprovideyouwiththehighestdegree
ofreliabilitythatmoderndesignandmanufac-
turingcanproduce.Onlybecauseofthisex-
haustiveprogramcanMclntoshguaranteeyou
completefreedomfromservicecoststorthefirst
THREEYEARS that youown your C 26,
LONGLIFEISA DESIGNREQUIREMENT
ATMclNTOSH
Exhaustivetestingandevaluationofeachcom-
ponentpartmakesyourC 26thebestvalue.
Asanexample-thefrontpanelisconstructed
ofmaterialsthatarenearlyindestructible!The
combinationofanodizedaluminumandglass
areimpervioustoattacksbyacidsandoils.The
subtle beauty oftheC 26 will remain un-
blemishedyear,afteryear,afteryear.Thisat-
tentiontodetailincreasesthevalueofa
Mclntoshattradeintime.
PERFORMANCE,RELIABILITY,FLEXIBILITY,LONG-LIFE,CUSTOMERPROTECTIO

FLEXIBILITYISA DESIGNREQUIREMENT
ATMclNTOSH
Carefulattentiontocustomerneeds,attention
tochangesincustomeruse,andconstantexper-
imentationinnewmethodsmakestheMclntosh
C26preamplifierthemostresponsivetocus-
tomerneeds.
Controlofremoteloudspeakerandmainsys-
temloudspeakersfromthepreamplifierisa
Mclntoshinnovation.
WiththeC 26youcanrecordononeortwo
taperecorders,monitoreitheroneorrecord
fromonetaperecordertoanother!
A front panel headphone jack forlow impedance
headphonesallowstheenjoymentofprograms
intotalprivacy-
Steppedtonecontrols,separateineachchannel
permitstheaccuraterepeatabilityofsettingsfor
anyprogramsource.TheMclntoshdeveloped
concentricswitchesgivemaximumflexibility
ineachchannelwithoutunnecessaryclutterand
complication.
Continuouslyvariableloudnesscompensation
allowstheexactamountofcompensationtosuit
yourtasteatanyloudnesslevel.
Addhighfrequencyandlowfrequencyfilters,
asix-positioninputselector,seven-positionmode
selector,centerchannellevelcontrol,phase
controlanda balancecontrolthatdoesnotaffect
thetotalloudnessinthelisteningroomandyou
havetheusefulflexibilityMclntoshhasde-
signedintheC 26.
Addedtothesevaluesisthecompleteprotection
fromallservicecostforthreefullyearsand
youknowwhytheMclntoshC 26isthebest
valueina solidstatepreamplifier,anywhere.
OnlyMclntoshoffersa freeTHREEYEARSERV-
ICECONTRACTwitheachpieceofequipment!
Youcan'tpayustoserviceyourC 26forthefirst
threeyearsyouownit.Bothpartsandlaborare
includedinthecontract.
C26$349.00-Cabinet$29.00
NANDSATISFACTIONARESOMEOFTHEDESIGNREQUIREMENTSATMclNTOSH

OURPROMISETOYOU:
YourMclntoshC 26mustbecapableof
performanceasadvertisedoryouwill
geta refundofyourpurchaseprice.
Noothermanufacturergivesyouthis
promise.
VOLUMECONTROL;Precision"tracked"atalllistening
levelsfortruestereobalance.TheACON/OFF
switchiscoupledwiththevolumecontrol.
TAPEMONITORSWITCH:Twoswitches,twoposition
mechanicallyinterlocked.
ACOUTLETS:
1unswitched(Red),4 switched
LF FILTER: Flat, or roll-offbelow 50Hz,6 dBper octave,
down12dBat20Hz
HFFILTER:Flat,orroll-offabove5kHz,6 dBperoctave,
down12dBat20,000Hz
SPEAKER SWITCH: MAIN—Switch the MAIN Loud-
speakerONorOFFwithoutaffectingtheperform-
anceofREMOTEspeakers.
REMOTE—SwitchtheREMOTEloudspeakerONor
OFFwithoutaffectingtheperformanceoftheMAIN
speakers.
INPUT SELECTOR: 6 positions AUX (auxiliary or spare),
TAPE2,TAPE1,TUNER,PHONO1,andPHONO2
MODE SELECTOR: 7 positions: LEFT only to both
speakers,RIGHTonlytobothspeakers,STEREORE-
VERSE, STEREO, MONO, MONO to Left speaker only,
MONOtoRightspeakeronly.
HEADPHONES:Forlowimpedancestereoheadphones.
SECONDARYCONTROLS
CENTERCHANNELLEVELTopofchassiscontrolto
adjusttheoutputleveloftheleftplusrightprogram
material atthe CENTER CHANNEL output onthe back
panel.
PHASECONTROL:Electronicallyreversephaseinthe
leftchanneltocorrect"outofphase"programsources.
TRANSISTORCOMPLIMENT:10Silicon-planartran-
sistors,3 diodes
POWERREQUIREMENT:117/125 volts, 50/60 Hz,12
watts
MOUNTING:MclntoshdevelopedprofessionalPAN-LOC
MECHANICALSPECIFICATIONS
SIZE: Front panel—16 inches wide by 57/16 inches high;
Chassis—15incheswideby5 incheshighby13
inchesdeep,includingPAN-LOCshelfandbach
panelconnectors;KnobClearance—1½inchesin
frontofmountingpanel
r
WEIGHT:18poundsnet,28poundsinshippingcarton
FINISH:FrontPanel—AnodizedgoIdandblackwith
specialgold/tealpanelnomenclatureillumination
CHASSIS:Chromeandblack
2 Chambers St.,Binghamton, N.Y. 13903
Phonearea6077233512
MadeinU.S.A
LABORATORYINC.
FRANCHISEDDEALER
038-259
ELECTRICALSPECIFICATIONS
FREQUENCY RESPONSE: +0 -0,5 dB20Hzto 20,000
Hz
DISTORTION: Less than 0.1% at2.5 volts output, 20
Hzto20,000Hz
INPUTSENSITIVITYANDIMPEDANCEPHONO1 and
PHONO2—2millivoltsat47,000ohmsfor2.5volts
output.
AUX,TAPE1,TAPE2,TUNER—.25voltsat250,000
ohmsfor2.5voltsoutput.
HUMANDNOISEPHONO1 andPHONO2—74dB
below 10 millivolt input, equivalent to less than 2
microvoltsattheinputterminals.
AUX,TAPE1,TAPE2,TUNER—85 dBbelowrated
output.
OUTPUT-MAIN—2.5voltswithratedInput.Upto10
voltscanbedevelopedwithoutdistortion.
TAPE—2.5voltswithratedinput.PHONOinput
signalof10millivoltsproduces1.2voltsoutput.
CENTERCHANNEL(LI R)—2.5volts.A levelcontrol
adjusts the CENTER CHANNEL output from -6dB
to+6dBwithrespecttoMAINoutput.
OUTPUTIMPEDANCE:MAIN—2,000ohms,designed
tooperateinto47,000ohmsormore
TAPEOUTPUT—About200ohms,designedtoop-
erateinto47,000ohmsormore
CENTERCHANNEL(L+ R)—About1,200ohms,de-
signedtooperateinto47,000ohmsormore
FACILITIES
BASS CONTROLS: 11 position concentric switches,sep-
aratecontrolsforeachchannel,—20dBto+16dB
at20Hz
TREBLE CONTROLS: 11 position concentric switches,sep-
aratecontrolsforeachchannel,±20dBat20,000Hz
LOUDNESS;Flatresponse,orcontinuouslyvariable
loudnessequalizationasvolumelevelisreduced.
BALANCE:Whenprogrammaterialisoutofbalance,
rotationofthiscontrolreturnstheprogramto
naturalbalance.
C26SPECIFICATIONS