When the predecessor of the 34-5560, the prestigious SA

r f t h e 3 4 - 5 5 6 0 t, h e p r e s t i g i o u s
W h e nt h e p r e d e c e s s o o
S A - 5 5 5 0w, a s i n t r o d u c e di,t w o n w i d e s p r e a dp r a i s ef r o m
i m p a r t i a lt e s t l a b o r a t o r i e sr e p o r t i n gi n l e a d i n ga u d i o
m a g a z i n e s ". l n e v e r y r e s p e c t ,a f i r s t - r a t er e c e i v e r , ". . .
" m o r e t h a n g o o d e n o u g ht o s a t i s f yt h e r e q u i r e m e n t so f
e v e n a c r i t i c a lh i - f i e n t h u s i a s t , ". . . " d e f i n i t e l ys t a n d so u t
e n t r i e s , "w e n t s o m e o f
as one of the more distinguished
t h e c o m m e n t sT
. h e 5 4 - 5 5 6 0c o m b i n e sr e t e n t i o no f t h e
f i n e s tv i r t u e so f i t s f o r e r u n n e rw i t h s u b s t a n t i a l
i m p r o v e m e n t isn .a l l a r e a s .
T h e S A - 5 5 5 0c o m b i n e ds u b s t a n t i apl o w e r o u t p u ta n d
l o w d i s t o r t i o nw i t h s u p e r bF M p e r f o r m a n c ei,n v o l v i n g
" F l a t G r o u pD e l a y " c e r a m i cf i l t e r s i n t h e l F s e c t i o na n d
sophisticatedPLL stereo multiplex circuitry. Even ottneglected AM perlormance was exceptional.Niceties
included click-stoptone controls, multiple protection
circuitry, two tuning meters and both high- and lowfrequency cutoff filters.
The 3A-5560has even greater power output at still
lower distortion.There are improvements in the oower
s u p p l y a n d p h o n o g r a p he q u a l i z e r a n d i n t h e F M s e c t i o n .
A n a c c u r a t e l y r e s e t t a b l e , 4 1 - p o s i t i o nc l i c k - s t o p v o l u m e
c o n t r o l h a s b e e n a d d e d , a s w e l l a s a n F M m u l t i p l e xh i g h b l e n d s w i t c h , l o w e r - d i s t o r t i o nd e t e c t i o n a n d m o r e
sophisticatedmuting. An already superb receiver has
been suroassed.
SA- 5560
Fbceirer
tt/AMstereo
to ensure stable performance against DC
voltage and temperature fluctuations. A
p u r e c o m p l e m e n t a r yd e s i g n , l a r g e g a i n
and sufficient negative feedback ensure
e x t r e m e l yl o w 0 . 1 % d i s t o r t i o n .
AmplifierSectlon
Massive Power Output
The 5A-5560will selve as the powerful
backbone for any stereo system. lt
d e l i v e r s9 0 w a t t s p e r c h a n n e l , m i n i m u m
RMS. into 4 ohms from 20 Hzto 2O kHz'
o n i cd i s with no morethan 0.1%total harm
'1,000
Hz,
tortion (both channels driven). At
t h i s f i g u r e r i s e s t o 1 0 8w a t t s p e r c h a n n e l
at 4 ohms.
Multiple Circuit/Speaker Protection
The care used in component selection
and circuitdesign makesspeakerd a m a g i n g b r e a k d o w nm o s t u n l i k e l y ,b u t
m a n y a u d i o p h i l e sa r e n e v e r t h e l e s s
c o n c e r n e da b o u t p o s s i b l ed a m a g e t o
t h e i r v a l u e d s p e a k e r si n t h e e v e n t o f
a m p l i l i e r f a i l u r e o r D C l e a k a g et h r o u g h
t h e d i r e c t - c o u p l e do u t p u t . T o s e t t h e i r
minds at rest, both an automatic
e l e c t r o n i cc i r c u i t w i t h r e l a y s a n d f u s i n g
are used to safeguard speakers and
a m p l i f i e r c i r c u i t r y .I n a d d i t i o n ,a n a n t i shocktiming circuithelps eliminate
a n n o y i n gt h u m p s i n t h e s p e a k e r a f t e r
turn-on by delaying turn-on of the speaker
t e r mi n a l s .
Glick-Stop Volume Control
This control offers 41 discrete steps,
providing accurate resetting, at any
f u t u r e t i m e , o f a d j u s t m e n t sf o u n d t o b e
m o s t s u i t a b l e f o r a n y p a r t i c u l a rs o u r c e o r
recording.
Low-Distortion Click-Stop Tone Gonirols
Click-stop settings guard against inadvertent misadjustment, making it
possible to return precisely to any
previously used setting, without guesswork. Bax-andall type NF tone control
c i r c u i t s a r e e m p l o y e d ,u t i l i z i n gs p e c i a l l y selected variable resistors, to obtain flat
frequency response at center positions.
Distortion is kept to minimum, too.
Massive Power Supply
Power-outputperformance ultimately
d e p e n d so n t h e p o w e r s u p p l y . T h e U L
approval accorded the 5A-5560 is partial
t e s t i m o n yt o t h e g e n e r o u sd e s i g n o f i t s
powersupplyand more than sufficient o
m e e t t h e d e m a n d s o f t h e a m p l i f i e r .A
b r i d g e d r e c t i f i e rc i r c u i t h e l p s a s s u r e
e x c e l l e n tr e g u l a l i o no f D C v o l t a g e i n t h e
f a c e o f c h a n g e si n l i n e v o l t a g e o r s i g n a l
input. A 15,000microfarad filter capacitor
is used in either side of the balanced
p o w e r s u p p l y f o r t h e u n u s u a lt o t a l o f
30,000microfarads capacity. This not only
c o n t r i b u t e st o t h e e x c e l l e n tr e g u l a t i o n ,b u t
also keepshum and noise low and
i m p r o v e sp o w e r a v a i l a b i l i t ya t t h e l o w frequency end, where it is most often
needed.
SophisticatedAmplifler Design
Lik'eevery Technics receiver ever made,
the 5A-5560employs direct-coupled OCL
(output capacitor-less)design. This helps
dssure solid power output and high
damping factor not merely in the
midrange around the rated frequency ot
1 , 0 0 0H z , b u t a l s o e x t e n d i n gi n t o t h e
r a n g e o f t h e l o w e s t a u d i b l ef r e q u e n c i e s .
T h i s r e s u l t s i n c l e a n , w e l l - d e f i n e db a s s
with plenty of punch and freedom from
b l u r r i n g .F o r e x a m p l e ,t h e r e i s s t i l l
substantial output at 5 Hz. A differential
amplifier in the first stage employs a
sinirle-packaged,matched transistor pair,
Low-Noise Phono Equalizer
This is a direct-coupled circuit consisting
of three stages. Thus low distortion and
wide dynarnic range (relative immunity
t o h i g h - a m p l i t u d es i g n a l s ) a r e a s s u r e d .
T h i s c a r e f u l l yw o r k e d - o u td e s i g n h a s
been incorporated into an integrated
c i r c u i t f o r t h e u s u a l l C r e l i a b i l i t ya n d
precision. Specially-selected low-noise
lC is employed to obtain superb phono
S/N ratio of 65 dB. Precision metal-film
resistors (1% tolerance) and polypropylene capacitors (2oh lolerance) rigidly
k e e p e q u a l i z a t i o nw i t h i n + 0 . 2 d B o f t h e
RIAA curve.
Hioh-Cutand Low-GutFilters
filters eliminateor, at least,reduce
Th-ese
a n n o y i n gh i s sa n d s c r a t c hn o i s e sa s w e l l
as hdmthat afflict some recordsand
taoes.
Loudness Swllch
At low listeninglevels,sensitivityof the
tendsto fall
humanear to low frequencies
oft.throwinothe bassout of balance.
Wiih the loddnessswitchengaged,low
frequenciesare boostedproportionately
as volumeis reducedto restorea natural.
a u d i b l eb a l a n c e .
Two Tape Monllors
terminalsare proCompleteinput/output
videdfor two tape decks,with front-panel
pushbuttonswitchesfor instantmonitoring of either one. Both may be activated
at the sametime for simultaneouscopying
of the same sourcematerial,or the user
may dub from the Tape 1 to the Tape2
position.
Mode Swltch
Stereoor monophonicmode may be
selectedby a front-panelpushbutton.
Maln/RemoteSpeakerFacllllles
Two pairs of speakersmay be connected
and fed separatelyor together.Two
pushbuttonselectorspermitoperationof
main speakersonly, remotespeakers
or both
only, both pairssimultaneously,
off (as for headphonelistening)
Equalizer
Two15,OOOpF
tiltercapacitors
MPXcircuit
Powertransformer
FM lF stage
AM lFstage
tuning
Variable
capacitors
Powertransistors
Front end
FM SELECTIVITY
Mcalqine
haqomy
: !'EMH:
j'lif
1ii-i'"or-'r-i'
o
Tuner
Section
Two Tuning Meters
A z e r o - c e n t e rm e t e r i n d i c a t e sp r e c i s e
c e n t e r - o f - c h a n nteul n i n g o n F M . A s i q n a l _
s t r e n g t h m e t e r f u n c t i o n sf o r b o t h F M ; n d
A M . I n c o n j u n c t i o nw i t h t h e c a r e f u l l v
c a l i b r a t e dd i a l s c a l e s ,t h e y f a c i l i t a t d
t u n i n g f o r l o w e s t d i s t o r t i o na n d b e s t
n o i s e r e j e c t i o n .I n a d d i t i o n ,t h e ; n n o v a t i v e
s i g n a l - s t r e n g tm
h e t e r e x h i b i t sl i n e a r
Indrcation
r e l a t i v et o s i g n a ls t r e n g t ho n
s i g n a l sb e l o wt h e h i g h e s tl e v e l s , l o r
p a r t r c u t a r tayc c u r a t et u n i n g a n d a s a n a i d
i n a n t e n n a a d j u s t m e n to r o i i e n t a t i o n .
F l o a t i n gW i r e i n L o c a l O s c i l l a t o r
T h i s f r e e s t h e F M o s c i l l a t o rc i r c u i t f r o m
u n w a n t . e cdo u p l i n gt h r o u g ht h e p r i n t e d c i r c u i t b o a r d , w h i c h w o u l d p r o d i . r c es o m e
d e g r a d a t i o ni n p e r f o r m a n c e .H i -g h l y s t a b l e a l u m i n u mc o r e c o i l a n d
t e m p e r a t u r e - c o m p e n s a t i nt g
itanium
c a p a c i t o ra r e e m p l o y e dt o k e e p
f r e q u e n c yd r i f tt o m i h i m u m .
FM lF with lC and "Flat Group Delay"
CeramicFilter
Of the sevenstages in the lF section
( w h i c hi n c l u d es i x d i f f e r e n t i aal m p l i if e r s ) .
t h r e e a r e 2 - e l e m e n ct e r a m i cf i l t e i s o f t h e
n e w F l a t G r o u p D e l a yt y p 6 . F l a t G r o u p
L J e r a ym e a n s t h a t p h a s e i n a c c u r a c i e s
( a n d t h e r e s u l t a n ts o u n d d i s t o r t i o n s )h a v e
b e e n a v c i d e d .T h e r e s u l t i s c l a r i t v .
t r a n s p a r e n c ya n d d e f i n i t i o no f F M s o u n d .
A M s u p p r e s s i o ni s l a r g ee n o u g ht o
e t t m t n a t ee x t e r n a ln o i s e ,t h a n k st o t h e
l i m i t e r e f f e c to f s e v e n l F s t a g e s .
Sensitive 3-Gang Fl\ttTuning
I n e t e c n n t c s - d e v e t o p e4 d- p o l ed u a l - q a t e
M O S F E T i s u s e d i n t h e fr o n i e n d f o r - h i o h
s e n s i t i v i t ya n d s e l e c t i v i t y .I n c o m b i n a t i o " n
w i t h a 3 - q a n gv a r i a b l et u n i n g c a p a c i t o r
f o r F M , t h ; s r e s u i t si n a s e l e c t i v i t yf i g u r e
o f 7 0 d B a n d a h i g h s e n s i t i v i t yo f 1 . 8
m i c r o v o l t s( S / N 3 0 d B , 3 0 0 O ) .
INPUTSIGNALLEVELVS OUTPUTLEVEL.S|/N&THD
E
,
r,tsrffilrHrl
FM Muting Switch
W h e n e n g a g e d ,t h i s s w i t c h s u p p r e s s e s
a n n o y i n g i n t e r - s t a t i o nh i s s a s ' y b u t u n e
f r o m o n e s t a t i o nt o a n o t h e r .l t d b a s i c a i l v
s m o o t h a c t i o n i s e n h a n c e df u r t h e r b 'v a i
A N D c i r c u i tt o e l i m i n a t et h e h a r s h .
t r a n s i t i o n a ln o i s e s h e a r d i n s o m e h u t i n o
c i r c u i t sa s t h e y c h a n g ef r o m t h e m u t e t o "
n o n - m u t ec o n d i t i o n s ,o r b a c k a q a i n . A
s w i t c h p e r m i t s d e f e a t o f t h e m u - t ea c t i o n
f o r r e c e p t i o no f d i s t a n t , m a r g i n a l t r a n s mrssrons.
at 15kHz is a mere 5.5microsec.
R e s p o n s ei s * 0 . 2 d B , - 0 . 8 d B o v e r t h e
f u l l b a n d w i d t hf r o m 2 0 t o 1 5 , 0 0 0H z . A n
M P X h i g h - b l e n ds w i t c h r e d u c e sn o t s e
o n m a r g i n a ls i g n a l si n t h e F M m o d e ,
w i t h o u t e s s e n t i a ls a c r i f i c eo f a u d i b l e
s e p a r a t i o n .T h e a u d i o o u t p u t c i r c u i t i s
d e s i g n e df o r q u a l i t y p e r f o r m a n c en o t o n l y
u n d e r p r o p e r l ym o d u l a t e ds i g n a l s ,b u t
e v e n u n d e r 3 0 0 % m o d u l a t i o n .T h i s i s
p a r t i c u l a r l yi m p o r t a n ta s o v e r m o d u l a t e d
F M t r a n s m i s s i o n as r e n o t u n u s u a l .
Quality AM section with lC
W e o f T e c h n i c sf e e l t h a t , w h e n t h e o w n e r
o f a g o o d h i g h J i d e l i t ys y s t e m t u r n s t o
A M l i s t e n i n gf o r a n y r e d s o n ,h e i s
e n t i t l e dt o t h e r e a s o n a b l es o u n d o u a l i t v
of which AM, at its best. is indeed
c a p a b l e .A l t h o u g ht h e r e s u l t s c a n n o t
match FM, in any case,the 54-5560
b o a s t s o f d o u b l et u n e d L C f i l t e r i n t h e l F
c i r c u i t ,a l o n g w i t h a p r e c i s e a n d s t a b l e
l C i n c o r p o r a t i n gm o s t o f t h e i m p o r t a n t
c i r c u i t r y .T h e r e s u l t i s b e t t e r s e n s i t i v i t y' ,
n o i s e f i g u r e a n d i n t e r f e r e n c er e i e c t i o n
t h a n . f o u n di n p e r f u n c t o r y" a d d - o n ' , A M
secltons.
Other Features
. Wide Linear FM Dial Scale
. F M M P X O u t p u tT e r m i n a l
F o r a d a p t o r f o r f u t u r e d i s c r e t e4 c h a n n e lb r o a d c a s t i n g .
Comparison Between "Flat Group
Delay" Filler and Flat Amplitude Fitter
"Flat group delay" lilter
Quality FM Discriminator
] 9 . p r e s e r . v et h e e x c e p t i o n a lq u a l i t y o f
F M . s i g n a lp r o c e s s e dt h r o u g h t h e t i i g h p e r f o r m a n c el F s e c t i o n , a C o m p a r a b - l v
i m p r o v e dd e t e c t o r i s u s e d . l t i d a
q u a d r a t u r ed i s c r i m i n a t o rw i t h e x c e l l e n t
l i n e a r i t y a n d b r o a d e r p e a k - t o - p e a kr a n o e .
I t t h u s c o n t r i b u t e st o f u l l a u d i c i - f r e q u e n 6 v
b a n d w i d t h .l o w e r d i s t o r t i o na n d t o l b r a n c ' e
t o h i g h - l e v esl i g n a l m o d u l a t i o n .
FM MPX Section with pLL lC
I n s t e r e o F M , P L L ( P h a s eL o c k e d L o o o )
c i r c u i t r yh e l p s m a i n t a i np r e c i s ep h a s i h- b
b e t w e e nt h e p i l o t s i g n a la n d t h e ' s u b c a r r i e r .T h i s r e s u l t s i n l o w d i s t o r t i o na n d
t h e m a i n t e n a n c eo f d e s i r e d s e o a r a t i o n
t h r o u g h o u t t h ee n t i r es p e c t r u n o
i f audible
s o u n d .I n a d d i t i o n t, h e P L L c i r c u i t
m a i n t a i n ss t a b l e p e r f o r m a n c ed e s p i t e
c h a n g e si n t e m p e r a t u r e h, u m i d i t va n d t h e
p a s s a g eo f t i m e . l t h a s b e e n i n c d r o o r a t e d
i n t o a h i g h - r e l i a b i l i t yl C t h a t r e p l a i e s 5 7
t r a n s r s t o r sa n d 4 d i o d e s . D o u b L ed i f f e r e n t i a l
s w i t c h i n gc i r c u i t e n s u r e s s t a b l e a n d
e x c e l l e n ts e p a r a t i o n .
Other Premium FM Features
Overallcare in circuitdesign has
r e s u l t e d i n e x c e p t i o n a l l yf l a t a u d i o t r e q u e n c yr e s p o n s er i g h t u p t o t h e u p p e r _
m o s t l i m i t s o f s t a n d a r ds i o n a l
t r a n s m i s s i o n sC
. h e b y s h e v l t y p el o w - p a s s
I r t t e r ss u p p r e s sp i l o t a n d s u b c a r r i e r
s i g n a l s w i t h o u t i m p a i r i n gp e r f o r m a n c ea t
t h e h i g h e r a u d i o f r e q u e n c i e s .p h a s e d e l a v
Amplitude
Characterirtic
. Group Delay
Characterl!tic
.
kHz
kHz
(lO,7MHz)
Flal amplitude tilter
Anplltude --Choracterirtic
Group Dglay
Characteri!tic
(tO.7MH2l
Square Wave and Tone Burst Response
5A-5560using
Conventional
" F l a tc r o u p
receiver using flal
Delay" filter
amplitude filter
Inour
I
I
n n n [ (rrxz)tt [l t--T
l- - .- | ou,ou,
(lkH't ---'--'I L_r LJ L |
L! ]r !]
j+rl--{il/.1
f*T",*
J,rill-llih, oured| {t!--riilr,,
I
I
I
1. Power on/olf switch
2 . P h o n ej a c k
3 . S p e a k e rs e l e c t o r s( m a i n , r e m o t e )
4. Bass control
5. Treblecontrol
6 . H i g h / l o wf i l t e r s w i t c h e s
7 . B a l a n c ec o n t r o l
8 . V o l u m ec o n t r o l
9 . L o u d n e s ss w i t c h
10. FM mutingswitch
1 1 . F M h i g h b l e n ds w i t c h
12. Mode switch
1 3 . T a p e m o n i t o r s w i t c h e s( T a p e l , 2 )
1 4 . P r o g r a ms e l e c t o r
'15.
Tuningcontrol
16. FM stereoindicator
'17.
S i g n a l s t r e n g t hm e t e r
1 8 . F M l u n i n gm e t e r
1 9 . F M / A M t u n i n gd i a l
1 . F M a n t e n n at e r m i n a l s( 7 5 O ,3 0 0 O )
2 . A M a n t e n n at e r m i n a l
3 . 4 - c h a n n e lM P X o u t p u t
4 . G r o u n dt e r m i n a l
5. Phonoinputs
6. AUX inputs
7. Tape deck 2 RECoutputs
8. Tape deck 2 PLAYinputs
9. Tape deck 1 RECoutputs
10. Tape deck l PLAYinputs
1 1 . R E C / P L A Yt e r m i n a l
1 2 . C i r c u i t p r o t e c t i o nf u s e s
1 3 . S p e a k e rt e r m i n a l s( m a i n )
1 4 . S p e a k e rt e r m i n a l s( r e m o t e )
AMPLIFIER SECTION
1 kHz continuous power
both ch. driven,4 O
8rr
2 x 1 0 8W
2x93W
20Hz-2O kHz continuous power
2x90W
both ch. driven,4 o
2x85W
8f)
Power bandwidth
(both ch. driven at 4 o)
1 0H z - 4 0 k H z .
-3 dB
Total harmonicdistortion
(rated power at 40 Hz-16 kHz, 4 o)
O.'loA
l n t e r m o d u l a t i o nd i s t o r t i o n
( r a t e d p o w e r a t 2 5 0 H z : 8 , 0 0 0H z = 4 : 1 , 4 Q )
o.1y.
55 (8 o), 27.5 g a)
D a m p i n gf a c t o r
I n p u t s e n s i t i v i t y& i m p e d a n c e
2.5 mYl47 kQ
PHONO
150 mV/35 ko
AUX, TAPE 2 PLAYBACK
TAPE 1 PLAYBACK, REC/PLAY inPut
180 mV/40 kO
P H O N Om a x i m u m i n p u t v o l t a g e ( 1 k H z , R M S )
150 mV
s/N
ratedpower
PHONO
AUX
50 mW poweroutput
PHONO
6 5 d B ( r H FA , 7 8 d B )
8 0 d B ( t H FA , 9 0 d B )
50 dB
50 dB
Frequencyresponse 20 Hz-2O kHz, *0.5 dB
(lHFPHONO:RIAAstandardcurve +0.2 dB
AUX: 20Hz-20kHz, +0.5 dB)
Tone controls
BASS
50 Hz, +13 dB- -13 dB
TREBLE
10kHz. +12 dB- -12 dB
L o u d n e s sc o n t r o l ( v o l u m e a t - 3 0 d B )
50 Hz, +9 dB
Lowtilter
100Hz, -6 dB/oct.
Highfilter
7 kHz, -6 dB/oct.
Outputvoltage
TAPE1 RECOUT
180mV
TAPE2 RECOUT
150mV
TAPE1 REC/PLAYoutput
30 mV
FM TUNERSECTION
Frequencyrange
. 88-108 MHz
(lHF1.8 pV)
Sensitivity
1.8 pV
s/N 30 dB, 300c2
1.5 pV
s/N 20 dB. 300C)
1.3 PV
s/N 30 dB, 75 c2
0.9 PV
s/N 20 dB, 75 cl
Totalharmonicdistortion
(400Hz, 100%modulation)
0.25%
Stereo
O.15o/o
Mono
S/N at +40 kHz deviation
54 dB (rHF72 dB)
Stereo
s6 dB (rHF75 dB)
Mono
20 Hz -15 kHz,
Frequencyresponse
+0.2 -0.8 dB
Alternatechannelselectivity
Gaptureratio
lmagerejectionat 98 MHz
lF rejectionat 98 MHz
Spuriousresponserejectionat 98 MHz
AM suppression
Stereoseparation
70 dB
1 . 5d B
53 dB
80 dB
78 dB
55 dB
1 kHz
10 kHz
Leak carrier
19 kHz
38 kHz
Limiting point
Bandwidth
lF amplifier
FM demodulator
AM TUNER SECTION
Frequency range
Sensitivity
Selectivity
lmage reiection at 1,000 kHz
lF reiection at 1,000 kHz
GENERAL
45 dB
35 dB
-65 dB
-75 dB
1.0pV
250kHz
1000kHz
525-1605kHz
30 pV,260 pV/m
22 dB
47 dB
40 dB
650W
Powerconsumption
110V/120Vl220V/24OV
Powersupply
(W x H x D)
500x 150x420mm
Dimensions
( 1 9 ' u "* t * " x 1 6 * " )
16 kg (35.3lb.)
Weight
@Technics
Electric
Matsushita
( A l l s p e c l i c a t i o n s a c c c r d i n g t o D l N . W h e r e d i l i e r e n t .I H F v a i u e s g i v e n i n b r a c k e t s . )
Specifications are subject to change without notice.
Printed in Japan