Sherwood S-9500c Service Manual

SI{ER\
TOOD
Function Switch.
Controls stereo or
mono operation.
S e l e c t o r S w i t c h .
C h o o s e s p h o n o ,
t u n e r , o r a u x i l i a r r
i n p u t s .
P r e a m p L e v e l . C o n t r o l s
p r e a m p l e v e l o n l y .
Tape Monitor Switch.
Normally set to left.
If depressed right will
connect in tape
monitor
jacks
on rear.
Hi Filter. Depress
right for l2db,/octave
attenuation
of un-
d e s i r e d t o n e s s u c h .
a s r e c o r d " s c r a t c h t ' .
INPUTS:8high level (2 tape monitor),2 (RIAA) Phono-
preamp.
TOTAL POWER OUTPUT: 4 ohms: 140 watts i ldb;
115 watts IHF;90 watts RMS.8 ohms: 100 watts t ldb;
80 watts IHF; 70 watts RMS.
OUTPUTSz 4 to lGohm left and right spkr. main and
remote; mono speaker, stereo headphone and record
output.
INVERSE FEEDBACK: 35 db.
DAMPING FACTOR: 30:l at 8 ohms.
FREQUENCY RESPONSE: 2O Hz to 20 KlIz r 1 db.
TONE CONTROL RESPONSE: FIat setting, 20 Hz to
20 KHz tl db.
TONE CONTROL RANGE: 15 KHz, 15 db, boost or cut
4O Hz 20 db, boost or cut.
PREAMP. EQUALIZER CURVES: AES,zRIAA phono.
SENSITIVITY: Radio - 0.25v Phono - 1.6 mv. Tape
head 1.2mv. (PH and TP inputs are adjustable with
Preamp I-evel control).
T o n e c o n t r o l s f o r b o t h c h a n n e l s .
A d j u s t m e n t o f t h e B a s s o r T r e b l e
c o n t r o l k n o b w i l l v a r l ' t h e t o n e o f
b o t h c h a n n e l s s i m u l t a n e o u s l v .
5 1s&c
MODEI S-95OOc
STEREO AMPLIFIER
SERVICE MANUAL
Main control for Power on-off and
Loudness of both channels. Auto-
matieally boosts bass at low levels
(if switch below is at t'Loudness
Int').
.S-.Control s left-to- ri ght
s t e r e o b a l a n c e .
P i l o t L i g h t
Remote Speaker Set On-off Switch. ll'ill
d i s c o n n e c t t h i s s p e a k e r s e t w h e n
d e p r e s s e d r i g h t .
Main Speaker Set On-off Switch. lf ill
disconnect this speaker set urhen
depressed
right.
L o u d n e s s C o m p e n s a t i o n S w i t c h .
N o r m a l l y s e t t o l e f t " I f d e p r e s s e d
right, it removes circuit
w h l c h b o o s t s b a s s a t l o w
l i s t e n i n g l e v e l s .
S P E C T F I C A T I O N S
*
MAX. INPUT CAPABILITY: Phono: 160 mv. for less
than 1% dist. Radio: 2.8v. for less than 1% dist.
MAX. HUM and NOISE: Vol. control min., 90 db.
(weighted) below rated output. Tuner input (controls
max.), 80 db, (weighted) below rated output. Phono
input (controls flat), 60 db, below rated output.
INTERCHANNEL CROSSTALK: Less than -45 db, at
1 KHz.
POWER CONSUMPTION: 115-125 v, 60 Hz; 10 to l2O
watts fused.
TRANSISTOR COMPLEMENT: 22 silicon transistors,
2 silicon rectifiers.
SIZE: 14 xl0-L/2 x 4 in. high.
SHIPPING WEIGHT: 22 lbs.
*All specifications taken with l20V line.