_t_m_o*e_gu p4pytt_ _y g p p y
m laybach mplifier
The lybcl Ampliie is a thee-s ge penode ?liie
which ovide + VU O ohm ouput a he ine u 'on
necto (O. ). The feedbck loo o ne is sa ge (VO5 ) in
cludes he Rlaybach quali2er. (35 nd ul7 ) whicl povi'de
a suitable for -Rlaybach eephasi5 A ee'dbX loo
around €he lasX wo sXages (V4O, VO7} seves o rin3mi-2e
d i5 to io n.
Bias and rase Os'cilltor
The ias and ßrse scillato (V0u^- 3 is a onventional
push-pull iode osillor which -ovide a O0 v{v' si nal o
the ae nd ecord eds
VU NJeter and lonioin
Visul and audible mnioi-g chechs are - rovided b y cle VU
mete (l-O1) and he Phone ac (O3 ). 3rih the lete and
0utut wich (SO5) in he ase osiion, he VU is conneced
acoss 5 and inicaes ease 4ren m',-r i' h 3 O i e h e i a
osition, he VU is acoss R5 and inicae ias cunt. The
VU i5 acoss the .3, l back m lifie out ut in bo h t h e 3 l a b c
and -ecord posiions o - O5. In the Rlaybac1c pwositio_ n, he VU
moitors &he comlee plybch ci_rcit fom he la ybac 3ead
to the ine 0 (J3. In he Recd osiion., the las two
stage5 o the lybach mliie re isconneced r om t h e f i s t
.- sage and e fed by he outp o he is wo sa ges o the !\ecod
Amplifie (icked oe 2, the ecord alibraion Contol),
The Poe Cupply (? igue ) ,avide5 . 3 volt A'' heer
powe J2 vol Du heae powe (though a ull wve selenium
ectiier, SROl) and he lae suply hogh a 5Y3G ull ìi-?ave
eciie.
e conic Alignment
-lignmen consiss o mahing all adjustments necessar or
poe electonic eomance. A, ecode "out ali gnmeni"
mY be chaacerised by oo requenc y rgs onse , hi gh n o i s e, l o -
outpu, high distoion, o combinion o these lt s. l l
Amex ecodes are corecl y li gngd a the a c 3 r y j u s € b e - o r e
Shimen, It 5hould no be necessy o eali gn le ecode 0n
arrival. hould hee be daub c an y img concenin g e h e
35O /o / /5
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