
14WATTHIGHFIDELITYPOWERAMPLIFIERMODE LHF·14AINSTRUCTiONMANUALTRDNICNORTHERNE L E C330DINSTRUMENTCO.BLVD.,l.J.BITTIffw-•• £,,1',:7""OT-A
The section of the manual be inning with this page is the CONSTRUCTIONsection. All poges in this se tion heve pagenumbersfollowed by "C" nc,
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TOPOF CIHASSISMOUNTING1. ( ) Fig. 1. Onthepower tformer12, 30019, cut both red leads to3",theredoor-llowandwhit.I to 2 1/211and the two green lea
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REARCHASSISMOUNTING1. ( ) Fig. 2. Mount thefoufcrewterminalboardTal, from the outside ofthe chQlli.QIshown. Us. two6-32lcrewsand two'6-32hex nut.
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FINAL CHASSIS ASSEMBLY1. ( )Fig.3.Ontheside oft~echeul.mountthesUcieswitch S1, osshown.(Fig.J,).Usetwo1J,-.40screWs,twoIJ,lockwcahe""'&
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WIRING1. ("""--Flg. 4. Connect a 1" piece of bene wire fromTll-!(C) to groundlugitAU (Sl).2.(Io)""fi~.4.Fromoutputtrans~
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generaldescriptionGENERALTheEICOHF-14 Is a 14watthigh fidelity basic poweramplifier employing two EL84 output tubes In push-pullanda highqualityoutput
1.(,;{FI9.5. Connect a3/4"pieceof bare wire fromJ4-3(51) to groundlug "C" {St} on socketJ4.2. ~. 5. Cut both lead! on a6800Iblue, grey,
FINALSTEPSthisp-.:~pose.Ii t he \,mplif'€7 is to be fastened to a surface, the feet will notbe used and the bottomplatewill be required as a temp
mechanicalIn.hlilationGENERAL0)HEATDISSIPATION(VENTILATION),Ineemecnwlth,9ther electronicequipment;the Model HF-14prbduees agr8c;rtdealofhedI"nor
INTERCONNECTION PROCEDURE* If the preamplifier requires 350VDC, use pin4;If thepreamplifier requires lessthan35UVDC.usepin5 andconnecta dropping resis
...In"n...ce__~_..._CONTILOLADJIISTMENTS0) TheINPUTLEVELADJ.conlloll.ln.endedto protectthesPeakersystemfrom"ubICllting"shouldlOIMOne
VOLTAGEANDRESISTANCECHART"'""H'DCVOlTSDCVOUSACVOLTS(1kc)"''''.-:INOSIGNALl.4WAm1.DVOLTSINPUTUNITOFf-
REPLACEMENT PARTS LISTStock'~Description~Stock'~DescriptionAm't.22S29 CIcap.,dIIC.,lSOmmf,='0%I 97025XN2.3, 4so<:ket, 9;;.1&apo
VB~_~scrif.l~jonCI cap., disc.,lSOmmf,:l:lO%C2'cap.,disc., .025mfdC3cap., disc.,2OOmrnf,:!:IO%Rl1C4cap., disc.,2OOmmf,:l:10%C5cap., dlle.,.02Smfd
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