Audio research sp 4 schematic
This is the 2 pages manual for audio research sp 4 schematic.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from audio research sp 4 schematic (Ocr-read)
Page 1
+§DVDC
G?+N.S.
ZNEZ?
7" I DARLINOTON
R17
1.5x
7' (RI
NHT aLx/NNT | TEL . H
I 1.
5H] +
; LINE V2332: I {if m 0.2.532 *2"
S S I (Tn-1' ~I-ns i
A m | awn .oI .OI
>- an» NJ" ' ' I am: T x
2: >- -~-° g] I 61m
> x lLu/HNT
g 5 m 2" I (1? * as
Q l 7' no -- .III
9 III
N I (n 20
_ OH I
In: F H
0.9, BLU o VEL cm '
Mama) 0 I SI
l/BMIMO) l I, (Rs_ (Rb 5,15.
5 Tc" (III? "° - ' DIM! look OWNS.
- 1' -° T zuszvs
DARLINGTON
uNSNITCHED a T 1
(AI
(77 SOVDC
I mg I}: W *H (YRACKING REGULATOR)
on gum Izoo
'- LED
HRS R96
CR5 m mm-
SuITcNED O -'-N-*'
T u
.Q
,_ Vfi?
.4. ' NOTES:
II I.- ALL CAPACITORSIN uF UNLESS NOTEDI
m"i" r I 5;; z.- ®A®AREOPTIONAL HEAD AHP PONER HIKE-OFF POINTS.
._l r} _l 3.7 A7, ARE LHTNIC.
an I v.7 CRIECRA ARE mama.
4- L< 5:079.qu ARE mm.
5] REMOVE HHEN
SHITCHED O .0] USING RPR-I 52} S.- CC: I. can
W
THIS PRINT CONTAINS PATEMYED AND/0R OTHER
INFORMATION CONSIDERED PROPRIETARV av
Aumu RESEARCH CORPORATION ANDIs FURNISHED
0N ACDNFIDENYIAL BASIS FOR IDENTIFICAYION
PURPOSES DNLv.
"W" AUDIO RESEARCH CORPORATION
" fl MINNEAPOLIS.MINNE50TA
an... Im -mus"
, SCHERATIC SP-u AND SP-HA PouER SUPPLV
x "1 910040-10 A
HIGH LEVEL HORN
INPUT 2: Man .IIs PAIIEE
m (STEREO)
aox (LT DR RT) [ACTIVE zuooRDERtI2na/Dcn)aEssEL "7 7
20K (HOMO! I no man RICH PASS FILTERraaa DzaHx
-95AL,(ONTR0L [POSTAHP GAIN = 2I as NoN.]
OREVERSE 5 RWT
(H -W\v-O Jl7 TAPEz
TNIGHT OSTERED (if) m «m OUTPUT
IA PEu'; J : OLEFT SW
ORIGNT
37 RIGHY
w W WIT
Cu 5, . IIIDK
RIGHT MODE 0 L05
1mg; J1? HUNIYDR SN. LIN REIRI NNR)
("om) BAUNKE VOLUME as» m m
-0 PAM-0 NAmz
SN. M7 OUTPUT
I__-.__---__-______ f- ___RZ_; ___\
RICNT
SPARE .19 59 SPARE 52 k w 9 b-
INPUT (A) SELECTOR ?
su. TUNER (I, I 9 9 9
"3 7" I ° PROCRAMADLE
"5 l I RBI IN 3922 MA6.PREAHP
MG 2 I FEEDBACK LOOP
RIGHT o-
TuNER 41 I"; _I m 22H <21
"F" HEAD AHP. * e
an R3; ROM .00
NOTE:
HA5 2 CAN BE PROGRAHHED
(USING SPARE FUNLETS)
RIIGET H ('5. an AMDREHDVING uuHPERs "
INPUT I. no av INSTALLINCAbzx RESISTDR 67
ISO " AS SHOHNJHEIIACz INPUT 1"
mm EECOHES A was HIDE RAND
MIC) INPUT PREAnP.
55") HAGI I MAG 2 GAIN CAN BE
(Q 0 {NANGED IT" '19. N0
wig; I; DECREASE FOR MORE GA!
INPUT RI9 Cl" 000 OR VISA VERsA.
I TONE CONTROL
van 5" .I. 5" «mamas
R7|00K R2! (3 BISHKISKHX
MAG INPUT z= W "P: moo
mm 2005:: 2115;: HINGE FRED
HEADAHP J1 _ .
INPUT * 27 HITNVALUES SHouN -Z°"1ZK"1
* I7I R26
"' 1%
6 ISO
[PREAnPeAIN=aTaaNoNiIKHz]
NOTES:
-20
as a OPTIONAL HEAD AMP
(RIGHY CHASHONN)
I RIGHT CHANNEL SNOHN
2 Rqu.RInI SELECTED FDR HIN. AIAAZ OFFSET.
CONNECT FROM ITDS 0R 1T0 N A5 NEEDED.
a- MAGNETIC Rm= R5 On RT IN PARALLEL HITH RzI
FOR RIGHYCH. SNnNN; R2] FIXED-RSORRI ADJ.
N - MAGNETIC C IS ORCIT IN PARALLEL NITN Ca
FOR RIGHTC .SHOHN; c3 FIXED. (IS OR CWADJ.
LAST NOlS
Al SIO. FI
TI .orlome
K2.J22-CBI
mental?
.na 16
PROPRIEYARV NOTICE
THIS PRINT CONTAINS PATENTED AND/0R OTHER
INFoRHATIoN CONSIDERED PROPRIETARV av
AUDIO RESEARCH CORPORATION ANDIS FURNISHED
ONACONFIDENTIAL BASIS Fan IDENTIFICATION
PURPOSES DNLV.
momma "I.
"IL-um- AUDIO RESEARCH CORPORATION
"""W MINNEAPOLIS MINNESOTA
2m... 'S'CNEHATIC SP-N AND SF-MA CIRCUITRv
w. u..- u...
g 5+" 910041-10 A