A
B
C
1
INPUTS[J1]
.
6K8
IN
1/4W
NET00080
R13
IG
IG
SG
SG
2
+15
+15V
-15
-15V
R14
1/4W
4K7
.
3
R15
1/4W
3K3
.
4
+15V
4
4
100N
100N
C29
C30
U3:E
U4:E
63V
63V
5
11
11
-15V
100N
100N
C69
C259
63V
63V
SG
6
POTENTIOMETERS AND KNOBS
EC179
7
M1590 - POTS LIST
MODEL(S):-
SMALL BLOCK - SB200H
REF
FUNCTION
PART#
KNOB
STYLE
P1
GAIN
4452
10030
P40
P3
LOW -MID
4453
10030
P40
P4
TREBLE
4453
10030
P40
P5
BASS
4453
10030
P40
P6
HI-MID
4453
10030
P40
8
P8
LOW EXPANDER
4417
10030
P28
R
F
P
K
N
P
R
F
K
N
R
F
P
K
N
R
F
P
K
N
R
F
P
K
N
R
F
P
K
N
9
LEADS & PINS REFERENCE
MC33079P (YS#6804)
MPSA13 (YS#5105)
10
MPSA42 (YS#5113)
J109 (YS#5122)
E
B C
D
S G
11
TO-92
TO-92
DIP14
A
B
C
D
E
F
G
C15
47N
100V
BASS
.
T
M
B
6K8
1/4W
P5:A
50K B
R12
4453
R18
47K
.
R69
1/4W
100K
.
10N
C17
100P
100V
C14
100V
4453
P3:A
50K B
R16
T
B
M
1/4W
6
-
4K7
LOW-MID
.
7
MC33079P
5
100V
18N
+
SG
U3:B
C12
C13
680P
100V
4453
P4:A
50K B
R17
T
M
B
1/4W
3K3
TREBLE
.
C16
680P
100V
MODEL(S):-
SMALL BLOCK - SB200H
#
DATE
VER#
1
17-Jun-2013 V01
2
14-AUG-2013
V02
3
10-APR-2014 V03
27-JAN-2015
4
V03
26-NOV-2015
V04
5
6
D
V
7
D
V
8
D
V
9
D
V
10
D
V
11
D
V
12
D
V
13
D
V
MAINS VOLTAGE INPUT SETTING (NA<->CE)
TL072CP (YS#6882)
MC33078P (YS#6840)
SET JUMPER P200 TO "115V" FOR NORTH AMERICA.
SET IT TO "230V" FOR EUROPE.
DIP8
D
E
F
G
H
I
J
100V
100P
C19
C40
R24
10N
100V
1/4W
1K0
MINI
R79
2
HI-MID
-
1/4W
R22
R72
1K0
1
1/4W
T
M
B
1/4W
MINI
MC33079P
4K99
4K99
P6:A
50K B
.
.
3
4453
+
SG
U3:A
10N
C18
100V
R53
R54
1/4W
1/4W
200K
200K
.
.
C41
100P
100V
9
-
8
MC33079P
10
+
SG
U3:C
M1590
DESCRIPTION OF CHANGE
First Release
PC8550: Routed auxiliary signal to headphones. - ML
PC8635: See PC for changes. GG
PC#8734:Tack on 1N4007 YS#6438 diodes to U9,U11.
PC#8734:IMPLEMENTED.
N
N
N
N
N
N
N
N
H
I
J
K
L
M
R167
1/4W
2K
.
R132
2
-
1/4W
1K0
1
R169
C9
MINI
MC33079P
1/4W
10U
3
15K
.
+
SG
U4:A
6
100V
22N
-
C2
7
R19
1/4W
MC33079P
R97
R21
5
3K
1/4W
1/4W
+
.
U4:B
2K
20K0
.
MINI
330N
C52
63V
SG
R75
13
-
1/4W
6K98
14
R55
.
MC33079P
1/4W
12
8K2
C33
C38
+
.
U3:D
4N7
250V
220N
63V
R32
6K98
.
SG
ICEpower50SAX2 block diagram
90V TO 260V INPUT.
CAUTION HIGH VOLTAGE
SEE DETAILS BELOW.
Mains
POWER
Live
S4
SPST Switch
fuse
FILTER
Neutral
1
Enable
2
OC
3
Thermal
P102
4
Input ch-2
Input
Audio in
Filter
7
Input ch-1
5,6
AGND
K
L
M
N
O
P
16V
M
P8:A
LOW EXPANDER
+
U4:D
12
4417
INPUTS[M1]
MC33079P
5B LIN
14
10K
-
13
OUT
R81
22K
.
NET00047
SG
R80
2K
.
R99
1/4W
10K0
.
9
-
8
MC33079P
10
+
SG
U4:C
ICE50SAX2
1
Vd aux
DC/DC
Rectification
2
EMI
GND
Converter
and
3
with
Vs aux
Fitering
isolation
Output
Vo ch1
stage and
GND
Filtering
ch.1
MECC
Audio out
Control and
HCOM
Output
Modulation
Vo ch2
stage and
GND
Filtering
ch.2
AGND
Product
SB200H
TONE CONTROLS
PCB#
M1590
Sheet
Thu Nov 26, 2015
Date:
Rev:
V04
YsType:Yorkville
Filename:
M1590V04sch.sch2006
N
O
P
Q
1
2
3
4
5
6
P103
7
8
P104
9
10
3
2
of
11
Q