"*.:::`ff,*" iri,"it"tit, injrgn, uiu tn" crvstal clear sounds the 6u:7i0n "un

"*.:::`ff,*" iri,"it"tit, injrgn, uiu tn" crvstal clear sounds the 6u:7i0n "un

d
q 1ll-.,0
a q11-:-.i 3
3
iONE
CONTROL
SASS
sFrlixets
;
IIo
I
a^NcE
tttt
1,/
',.-)
e
aGHFTLT
previously
C o n s t r u c t e db y t e c h n i c a ls t a n d a r d s pre-amplifier
separate^
sbphisticated,
i"r
;;;;;J
units, the sU-7300flawlesslv
;ilb;;;"tp'iiti"t
unadultrated
i u f t i fi " t n " r e q u i r e m e n t sf o r a c c u r a t e '
p
e
r
f
o
r
m
a
n c ef i s u r e s
S
u
p
e
r
b
n
r
u
s
n
e
o
;;;;; ieproouctio .
s
t
v
l
i
n
gt o m e e t
iluminum
;;;;;;;";itn
TF€BLE
"*.:::'ff,*"
t-t*
UI
NPdsE|.tr.S
Most
t h e m o s t c r i t i c a la u d i o a n d e s t h e t i cs t a n d a r d s 'the
sounds
iri,"it"tit, injrgn, uiu tn" crvstalclear
other
with
coupled
when
pr5or"e
6u:7i0n
y
o
u
r
s
e l {t o a
T
r
e
a
t
q
u
a
l
i
t
y
'
"un
Jo*pon"nts of equal
l i s t e n i n gt e s t s o o n .
SU73OO
Intesrated
Amptirier
stereo
41wattsperchannel,minimumRMS,both channelsdriven,at 8 ohms,
total harmonicdistortion.
from 2OHzto 2okHz,withno morethan O.O8o/o
At 1,OOOHz,
this figurerisesto 43watts per channelat 8ohms.
Current Mirror Loading Attains Exlremely
High S/N Ratio in Equalizer and Low
Distortion in Power Circuits
A c l a s s i c d i l e m m a i n a m p l i f i e rc i r c u i t r y
i s t h a t h i g h e r o p e r a t i n gc u r r e n t ( f o r g a i n ) ,
p r o d u c e sa c o r r e s p o n d i n g l yh i g h e r l e v e l
o f n o i s e .T o s o l v e t h i s p r o b l e m ,T e c h n i c s
e m p l o y s c u r r e n t - m i r r o rl o a d i n g i n t h e
differential amplifier lirst stages of the
e q u a l i z e rc i r c u i t a n d t h e p o w e r a m p l i f i e r .
T h e r e s u l t sa r e a h i g h e r S / N r a t i o i n t h e
e q u a l i z e ra n d l o w e r d i s t o r t i o ni n t h e p o w e r
stage.
atl
rR
txttl(
(flUl,
f
n nQo/
U.UO
(20 Hz-20
A d d i t i o n a l l y ,a s t h e t a p e m o n i t o r a n d
r e c o r d i n gm o d e s w i t c h e s o p e r a t e
i n d e p e n d e n t l yy, o u c a n u s e t h e S U - 7 3 0 0
t o l i s t e nt o a r e c o r d o r F M p r o g r a m
sourcewhile tape dubbing is in progress.
/o #:iiff;monic
kHz) at Rated Oulput
A m p l i f i e rp o w e r i s u s e f u lo n l y i f i t i s
d e l i v e r e dl r e e o f d i s t o r t i o n .A t a n y p o w e r
l e v e l , f r o m a w h i s p e r i n g2 5 0 m W t o t h e
f u l l r o a r o f 4 1 w a t t s p e r c h a n n e l ,t h e
total harmonic distortion of the SU-7300
i s a n i m p e r c e p t i b l e0 . 0 8 % . T h e i m p r e s s i v e
d i s t o r t i o nr a t i n g a l s o a p p l i e s t o t h e l o w
power output of 250 milliwatts. Use of the
m a t c h e dt r a n s i s t o rp a i r s i n a s i n g l e p a c k a g e a n d t h e a l r e a d y m e n t i o n e dc u r r e n t m i r r o r l o a d i n g c o n t r i b u t et o t h e l o w
distortion.
41-StepVolume Control
T o p r o v i d e p r e c i s e , r e p e a t a b l ev o l u m e
s e t t i n g s ,t h e v o l u m e c o n t r o l h a s 4 1 c l i c k stops.
High Filter
C u t s d o w n h i g h f r e q u e n c yn o i s e s u c h a s
record scratches and tape hiss. Cut-off
slope is -6 dB at 8 kHz.
Direct Reading Power Meters
The large scale meters providedirect
r e a d o u t( a t 8 o h m s ) o f a m p l i f i e ro u t p u t
p o w e r i n w a t t s ,w i t h i n s t a n t a n e o u st r a c i n g
o f s i g n a l p e a k s . T o i m p r o v e l i n e a r i t ya t
l o w o u t p u t ,a g e r m a n i u m d i o d e i s u s e d f o r
rectification.Two ranges are provided
( x 1 a n d x O . ' l )f o r a c c u r a t em o n i t o r i n go f
all outputlevels.
OUTPUT POWEB VS.TOTAL HARMONIC OISTORTION
(rHF)
s/NRatio
at 2.5 mV Phono InPut SensitivilY
T h e 7 8 d B s i g n a' lll-8t ,o0-0n0o1i sher a t i o i s t h e
noise component
e q u i v a l e n to f a
in the musicsignal.In real terms,this
m e a n s t h a t n o i s e w o n ' t i n t e r f e r ew i t h
y o u r e n j o y m e n to f m u s i c , e v e n d u r i n g
very soft musical passages. This extreme
" q u i e t n e s s " o f t h e p h o n o e q u a l i z e ri s
a n o t h e r r e s u l t o f a d v a n c e dc u r r e n t m i r r o r
c i r c u i td e s i g n .
Loudness Switch
Use of this feature boosts the lower and
upper rangesof the audio signalto
compensate for the poor response of the
human ear to extremes of frequency at
l o w l e v e l s . l t i s u s e f u l w h e n l i s t e n i n gt o
m u s i c l a t e a t n i g h t ,w h e n t h e v o l u m e
setting is very low.
RIAA compensation Accurate Within
*0.3 dB
T h e p l a y b a c ke q u a l i z a t i o nc h a r a c t e r i s t i c s
o f t h e S U - 7 3 0 0v a r i e s b y o n l y + 0 . 3 d B
f r o m t h e R I A A r e c o r d i n gc h a r a c t e r i s t i c
f o r p h o n o g r a p hr e c o r d s . l t w i l l p r o d u c e
n o p e r c e p t i b l ec o l o r a t i o no f s o u n d .
Two-way Dubbing
T h e t a p e s e l e c t o rc i r c u i t p e r m i t s t w o t a p e
d e c k s t o b e c o n n e c t e da t t h e s a m e t i m e
t o t h e S U - 7 3 0 0D
. u b b i n gm a y b e p e r f o r m e d
b e t w e e nt h e t w o d e c k s i n e i t h e r d i r e c t i o n .
AMPLIFIERSECTION
1 k H z c o n t i n u o u sp o w e r o u t p u t
2x55W (4o)
b o t h c h a n n e l sd r i v e n
''
2x43W (8o)
4 0 H z - 1 6 k H z c o n t i n u o u sp o w e r o u t p u t
2 x 48W (4o)
both channels driven
2x41W (8o)
20 Hz-20 kHz continuous power output
2x48W (4o)
b o t h c h a n n e l sd r i v e n
2 x 41W (8o)
Power bandwidth
b o t h c h a n n e l sd r i v e n a t 4 o
8 Hz-55 kHz. -3 dB
T o t a l h a r m o n i cd i s t o r t i o n
rated power at 40 Hz-16 kHz, 4a 0.08oh
rated power at'l kHz, 4rl
0.08Yo
-26 dB power at 1 kHz,4a
Oj%
0.'l5%o
50 mW power at 1 kHz,4a
(lHF, half power 0.047o 20 Hz-20 kHz,
0.02% 1 kHzl
l n t e r m o d u l a t i o nd i s t o r t i o n
rated power at 250 Hz: 8 kHz=4:1, 4a
0.08%
( l H F ,r a t e d p o w e r a t 6 0 H z : 7 k H z = 4 ' . 1 ,
0.08%)
SMPTE
F r e q u e n c yr e s p o n s e :
7 Hz-80 kHz, -3 dB
'15
Hz-40 kHz, - 1 dB
(lHFPHONO:
R I A A s t a n d a r dc u r v e
+0.3 dB
AUX:
20 Hz-20 kHz, +0.5 dB)
0.6 mV
R e s i d u a lh u m a n d n o i s e :
40 (Bo),20 (4a)
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 :
2.5mV/47 ka
PHONO
150mV/47ko
TUNER
180mV/47ko
PLAYBACK,TAPE 1
150mV/47 ka
PLAYBACK,TAPE 2
180mV/47ko
R E C / P L A YT, A P E 1 , 2
P H O N Om a x i m u m i n p u t v o l t a g e :
(1 kHz, RMS)
150mV
S/N:
power
63 dB
PHONO
rated
( r H FA , 7 8 d B )
8
3 dB
AUX
( r H FA , 9 7 d B )
Main, Remote Speaker Connections
Two pairs of speakers may be connected.
A p u s h b u t t o ns e l e c t o r p e r m i t s s e l e c t i o n
of either pair.
-26 dB power PHONO
55 dB
AUX
58 dB
53 dB
PHONO
50 mW oower
'
53 dB
AUX
Tone controls
BASS
5 0 H z , + 1' 122d B - - 1 2 d B
dB--12 dB
20 Hz, +
TREBLE
H i g hf i l t e r :
8 kHz, -6 dB/oct
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 ) :
1 0 0H z , + 8 d B
O u t p u tv o l t a g e & i m p e d a n c e :
150mv/1.2ka
R E C O U T ,T A P E 1 , 2
REC/PLAY outout
30mV/82 ko
Load imoedance:
4-16o
MAINbr REMOTE
GENERAL
400W
Power consumption
Power supply
110V/120V/220V/240V
50/60 Hz
Dimensions:
(WxHxD)
Weight:
410x 139x 334mm
(16+"x51F"x133?")
8 . 9 k g ( 1 9 . 6l b s . )
@Technics
Electric
Matsushita
SDTFO3O2OE
S p e c i f i c a t i o n ss u b j e c t t o c h a n g e w i t h o u t n o t i c e . P r i n t e d i n J a p a n