Transcription of www.hparchive
1 !Thankstoon-linecurator:KennethKuhnforsu pplyingandscanningthisvintagedocument.,. (j~~AMPUFIER========== (-6dB,RIAA,+6dB) (FLAT,BOOST).. , (EuropeanUnits)..E;DeckWiring(SeeSection sVI,A,B,C,andD.) . ,instudios, (phonographpickups,tapedecks,AMandFMtunn ers) , , ,installandwireprintedcircuitconnectorsi nthedeck,drillfrontorrearpanelholesasreq uired, ,theresidualhumiswellbelowthermalnoise(w hichitselfhasbeenminimizedbyoptimuminput stagedesign). , ,overloadproducesnolongtimeconstanttrans ients; , ,andactivefiltersinthemixingandcontrolbo ard, ,orrectificationof, , , , !III-1010~o100~oo1000~Ilrr~I1001 FREQUENCYII~I"h!I~~T,OUT:I'i~o+l-J+ ++1"'-N~-+----==t"'+-++----1I--+-+++-""' +-+-I_+____1~I!1i! :II'\~~I~-51fI I~~!\..-IIIi:iFrequencyResponse1\..m\~-1 01+11/-'-+1-+1+----+---+----+-++----1-+- +-+-Hf~~I~-IiI\! \-1~t--+-+++_-+--+----+-++-_I1__+-+_+_1_ +_\ +___+_I_1_+____1: Iii\Ir\~< , , :84dbbelowonevoltoutputHUMANDNOISEHARMON ICDISTORTIONSPEAKERZCONTINUOUS*AUDIOPEAK +116::::::36W::::::90W+18::::::50W:::::: 160W+4**::::::80 WINPUTVOLTAGEFORFULLOUTPUTT uner,Tape,Aux1,Aux2:~ :~5mvrmsINPUTIMPEDANCET uner,Tape,Aux1,Aux2:100 (Cont'd.))
2 >18dB/octavewithcomerat5,8, and8 :Dualprecisionattenuator,60dBrange, :TUNER,TAPE,PHONO,AUX1, :STEREO-DIR(ect),REV(erse),L,RMONO-DUAL, L,RBASS:FLAT,BOOSTR esponse:RIAA,+6 dB,- 6 "(425mm)wide, "(127mm)high, "(278mm)deepbehindpanel.*Bothchannelsope ratingsimultaneouslyatmaximumoutput.** 10%,50-60Hz,20 Wstandbypower,135 Watfulloutputinto16n(bothchannels). "normal" "left" "right" :TUNERTAPEA cceptsinputatlinelevel(0dBm)fromFM,AM, (0dBm) (STEREO side)orboth(MONO side) , highfrequencycut-offat5kHz, highfrequencycut-offat8kHzwitha , (orscarcelyperceptible) ,thenuisanceandhazardofanimproperlyset2- 1 FrontPanelControlsbalancecontrolareelimi nated.( ,theperfectionistmaywanttotesthiscompone ntsandintroduceappropriatelossintothe"ho t"side.) (-6dB,RIAA,+6dB)BelowtheINPUT selectorcontrol,andeffec-tiveonlyinthePH ONO positionofthatcontrol,a (Nor-mal)position, ,thehighfrequencyresponseisdroppedby6dB, whileintherightposition, (suchasDeutscheGramophone)conscientiousl yadheretoRIAA spec-ifications,whileothers(namessupplie donrequest) , +6dBpositionbetterinthemajorityofcases,y ourspeakers(oryourears) (FLAT,BOOST) ,theswitchraisestheresponseat6 ,approximatecompensationisprovidedforthe usuallow-endroll-offofgoodspeakers.
3 (Twopolesat40-50Hz).Ifyouarefortunateeno ughtohaveanoverdampedpairofwooferswithre alpolesat80 Hzand20Hz(suchasLE-15A'sorALTEC411-A' ), , ,the"LOW"sideofeachinputisnotgroundedins idetheamplifierandTHESEMUSTNOTBEGROUNDED ORCONNECTEDTOGETHER externally.(SeeSectionV, )Ifcoaxialorshieldedwiresareusedforeachc hannel, , , , (includingatorinsidepickup). 'shieldmustnotmakecontactwithanyTOCHASSI SOfTURNTABLEORCHANGER leadconnectingpickuptoamplifier(includin ginnershields).Insomelocationstheoutersh ieldmaynotbenecessary;insuchcases,turnta bleorchangerchassisshouldbeconnectedtoam plifierchassis(groundterminalonrear)with aseparatewire, ,motors, , , , givenpickup, :r\L6~\R1=_0_x10-100R ,Roispickupinternalresistanceinohms,andR ,seeSectionV, , , , ,theanglebetweenthelinesofsighttothetwos peakersshouldbeabout150to450, ~~~~ ,FREQUENCYANDLINEFUSINGU nlessspecificallytaggedotherwise, (Anexternal230-115 Vstep-downtransformermaybeused.)
4 , 10%ofthenominal(115 Vor230V) ,a separ-ategroundmaybeneededtogetridofhumo nphono, (EuropeanUnits)UnitsshippedtoEurope(andi na fewcaseswithintheUnitedStates)areequippe dwith115 , , , , ;for230V, ,caremustbetakentoinsurethatwindingsarec onnectedinan"aidingsense"(instantan-eous fluxproducedbybothwindingsmusthavethesam epolarity).Thelinefusemustbechangedwhenc hangingthelinevoltage( ;.8ampfor230V). ,carefulattentionshouldbepaidtotheoutlin edrawingshowninSect~opIII, ,especiallythepowersupplycapacitors,areq uitelarge, ,J.,itwillbeseenthatoverallfrontpanelhei ghtis5", ",andthatthesidegussets' " "high,iftheamplifiercanbetippedslightlya sitis ,4", ,itmaybeassembledasoutlinedbelow.(SeeSec tionIII, ~rpictureofassembledenclosure.)Theenclos urekitconsistsofthefollowing:Twowoodside panels(onerightandoneleft). ,simpleandbeautifulfinishwhichcanbedoneb ymostanyoneanywhereisanoilfinish, (onebrandis Watco).
5 Ifahigh-glossfinishisdesired, , , , "DUAL". ,theabovetestisdifficult,' ,ontheaverage,onechannelseemslouderthant heother, , ,theweakonemaybedefective.( ) (ex-ample:Q3andQ5)withconstantcurrentsup plies(example:Q1andQ7).Thiscombinationpr ovidesveryhighinputimpedance, (example:C1,R1,C3,R7,Q3,Q5). ,suchasQ3orCR8orsuchasCR1,CR2,CR5,etc., , ,anda (about10Kn ) (normallytheoutershieldsofcoaxiallines) (0dBm) +Ro= , 6dBvariationofhighendresponse, ,togetherwiththeselfinductanceofthepicku p, ,andifRistheinputresistancetothepre-ampw erequirethatThelowendbassboostoftheRIAA charac-teristicbelow500 HzisprovidedbyC12andR3+R4+R5+ , ,twoofthepolesbeingprovidedbytheinputRCn et-worksandtheremainingpoles(andzeros) (Ifyounoticeanyhum,it'sfromcouplingdirec tlytothecartridge.)Potentiometersareprov idedtosupplythebasecurrentsoftheinputemi tterfollowersandtherebyenablethevoltages atterminals5,4, cascadedcomplementaryemitterfollowercom- prisingtransistorsQ12*andQ13*, *andR6*andbycurrentsfromcurrentsourceQ8f lowingthroughCR7,CR9,R22, *andCR2*shuntR5*andR6* *protectstheoutputstagesfromtheeffectsof capacitivecableloadsatveryhighfrequencie swhileR8* ,CRll, * , differentialpair,QlandQ2, (>100dB).
6 ,whereC6beginstoshuntR16producinga highendcut-offintheamplifierandreducingt heloopgaincutoffrateto6 ,C4,Rll, poleat16 Hzanda ,tocompensateforthelowendroll-offofmostl oudspeakers." , (volumecontrolatmini-mum)andR4withtheinp utterminalsopen(orwiththevolumecontrolat maximum)togivezerovoltsoutoftheamplifier ,thisconditionwillholdforanyimpedancethe amplifierfaces(anyvolumecontrolsetting). (50V,40V,20 VandlOY) ( 40V)isrectifiedbydiodesCRl,CR2,CR3, ,especiallyunderload, (You'llruinyourscrewdriver.)The+50 Vsuppliesarereally10 Vsuppliesfloatedonthe+ + 20 Vsuppliesobtainedfromthecascadedemitterf ollowersQ3-Q5, ,C5,R13andR15,C7andtransistorQ3forthe+20 VsupplyandRIO,C6,R14andR16,C8, , ,R19,CR17andR18, R20, :Supply 10V 20V 40V 50V5-3 SECTIONVICIRCUITDIAGRAMSC615fL+033-020r- ------------------ ~~NPIII-= ,(1C10 TIOOO-= + + + + 'VV' + ~~RSCR1lOOK1-040-=CR21-04001024-2214-221 RI310 KCR3CR41-0401-040.)
7 ,III11~~-"'--"'-----""----~~ '\----"""1,,",""----------o+20 VIIItlI-=I-=IIIII_____J*R1=..!:.. , VOLTOUTAT1 ~I ~~Cl' ,roo0 MODE[STERE01iMONO]51'~~, +20V+ - - - - - - - - - - - - ---~I+20V+IOVIIIIIIIIIIIIR3 IlOOKII+ :5~+-+.J-:-~t-;:;-v:;:.:,JlVV\r~=:Y-5361 ICIIr~l~ :10~I1CI~ """' :14rIIIIIIIIIIIII2213C5-=2*1+10fLF+20V~C 7*1+10fLF+/OV~I-~P-'1C8~IOfLF-/OV~+IC6~I OfLF-20V~+IIIII+/OV~"""",,'V,,.-'V-IOVII IgF1.~~516 PHONO~TUNER~~51 AINPUTRI6 MONITOR10 KOUTPUT~TUNERR15 MONITOR10 KOUTPUTPHONOTAPE~AUX1 NER-ft ~r"' +---JIt--' * * ~~L-------.:..:<>--~ uuMODE[STERE01iMONO]51' ,52r - - - ----------- - - - - ---11 IIII+IOV+IOV+ !~K211I~~. +6-O-+ '\I\I'v-+-~---+ 'v-f'--+1I*4oo0 ACTIVEFILTER+/OV+/OV+20 VRIBTOPOWERAMP10 KSTEPPEDATTENUATORS3 FPNP-2N3906,1853-0036 NPN-2N3904, ", *pt---<? ' '6* ~~~, ~(_-.,~ thru22;TerminalsontheSmallerConnectorare Shownas1*thru10*.)
8 AllResistors1 *andC28*SelectedToCenter10 KHzNotchat10 KHz 100Hz1 ZIBF ilterandControls,----------------------- -----------CR11-040R610KR710 KRIO10 KRI3+ VatOutputwithVolume'tF""~ < ( ~062N5551 CurrentSource+C2" ~AmplifierInputfromDavenAttenuatorI2/ ~-NOTES:\* ,(el.)/AllResistors1I8 WMetalFilmUnlessOtherwiseNoted.,J4 -DigitNumberbyDiodesisDerivedfromPartNum ber:CR1=190J40=1-040 AudioOutJ7,PIOVo-40 VPhoneJackJ8+ 'Jl000pFR21+ ~/::--~-----------------------_~BOOST~FL ATIIIIl:! !1005:..---~~ ~--'\1/1\4I'W---'9-50 VII-------------------------~o)utwith--- ------------------, 'I'."""---- 13+ ~IIIIIIIIT1+C1350}.l-F+C2350}.l-FR , DigitNumberByDiodesandTransistorsisDeriv edfromPartNumber:01::1853-0045=3-045 AllResistors1 "' :. :-3;.:5~ + ~ +---o-10V052N24054-352").,, <;+ ,.1~-----"" +C6+ 'J----------------------------_~-50VC415 Kfl-F+CRIOCR12CR9 CRll+C2_350fl-F+CR15 ClR13RI59V350fl-F22K2K++ + +C33A15 Kfl-FCR17CR5750MA\ + \.
9 + ,,..----------- - - - - ------------- ---- -- ------,I01II2N4036I)3;:. :0:::4.::5--<j'+ IO%VI47K50-400' , lO%VI47K50-400' , ,C3,C4,C5300~Fnp3V30D1614C6,C7,C8,C915~F 20 Vtantalum0180-1746C10,Cll1, ~F 10%mylar0160-0303CR1,CR2,CR3,CR4,silicon diode1901-0040CR5, CR6,CR7,CR8Q1,Q2transistornpnX2N40441854 -0221Q3transistorpnp(special)1853-0020Q4 transistornpnX2N39041854-0071Q5transisto rpnp(special)1853-0020Q6transistornpnX2N 39041854-0071Q7transistorpnp(special)185 3-0020Q8,Q9transistornpnX2N39041854-0071 Q10transistorpnp(special)1853-0020 QlltransistornpnX2N39041854-0071R1* * , ,R55lln1 , , ,R20,R21215n0698-3441R2210K0757-0442R23, R245lln0757-0814R25, R26, , ,C2,C3, 'Fmylar0170-0086C5,C6,C7, ,C10100pFmica0160-2204 Cll, ~C13, , , , , , , , (SeeSchematicVI,B.)0160-0160L1,L2 Inductor, ,Q2,Q3,Q4transistorpnp2N39061853-0036Q5, Q6,Q7,Q8 Q9transistornpn2N39041854-0215Q10,Qll,Q1 2Q13,Ql4,Q15, Q16transistorpnp2N39061853-0036R1, ,R4lOOKpot2100-2516R5, ,R8lOOK0757-0465R9,R10lOOncarbon0684-101 1 Rll, , , ,R18lOOncarbon0684-1011R19,R20lOOKpot210 0-2516R21, , , ~F ceramic0150-0093C250~F 50 Velectrolytic0180-0141C3100 JJF6 Vnp30D603C422 JJFtantalum0180-0228C550~ ~ ~F0170-0066C936pFmica0160-2308C101,000pF ceramic0150-0050 Cll,C12,C1350~F50 Velectrolytic0180-0141CR1, CR2, CR3, CR4,CR5, CR6,CR7,CR8,silicondiode1901-0040CR9,CR1 0,CRll,CR12,CR13L1,L2220 JJHinductor9140-0129Q1,Q2transistornpn2N 55511854-0474Q3transistorpnp2N54011853-0 264Q4transistornpn2N55511854-0474Q5trans itorpnp2N54011853-0264Q6transistornpn2N5 5511854-0474Q7transistorpnp2N54011853-02 64Q8, , ,R550 Kpot2100-2517R6,R710K1 ,R12200n1.
10 (Continued) 0757-0442R27,R28loon1/4carbon10% ,C2350,uF15 Velectrolytic0180-2216C3,C415000,uF50 VSpragueelectrolytic6821 Type36D153G050CC2AC5, ,C8100,uF15 Velectrolytic0180-0061C9,C10,Cll,C121000 pFceramic0150-0050CR1,CR2,CR3,CR4diode,r ectifier3amp100V1901-0200CR5,CR6,CR7,CR8 diode,rectifier%amp100V1901-0158CR9,CR10 ,CRll,diode,silicon190t-0040CR12CR13,CR1 4diode, ,CR16diode,Zener9V1902-3149CR17,CR18diod e,silicon1901-0040Q1transistorpnp2N40361 853-0045Q2transistornpn2N24051854-0352Q3 transistornpnX2N39041854-0071Q4transisto rpnp(special)1853-0020Q5transistornpn2N2 4051854-0352Q6transistorpnp2N40361853-00 45Q7transistornpn2N24051854-0352Q8, (Continued)PartsListReferenceDesignation R1,R2R3,R4R5,R6, R7,R8R9,R10R11,R12R13,R14R15,R16R17,R18, R19,R20R21,R22R23, R24,R25, ) , 'F0160-0155C3, ceramicdisccap0150-0093C5, , ,F3speakerfuses2ampmax2110-0003 JlACpowerconnector1251-2357J2,J3powerrec eptacles1251-2073J4linefuseholder1400-00 84nut2950-0038washer2190-0068J5,J6fusecl ips1400-0008J7speakeroutputjack(mateswit hPI)Cinch-JonesS-202-BJ8phonojack, ,JI4,JI5,JI6,inputjacksGCElectronicsJ17, (Continued)TheBarneyOliverAudioAmplifier ReferenceDesignationDescriptionStockNumb erJ19,J20socketsforQ12,Q131200-0041anodi zedinsulators1200-0043L1inductor~13 PoHspecialP1speakeroutputplug(mateswithJ 7)
