11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
of
Filename:
PCB#
Sheet
2
2
Product
Date:
V6.20
X578V07sch.sch2006
X578
ECO
Mon Jul 13, 2015
Rev:
50KB/50KW
N36
N10
N10
SG
N18
N18
N16
SG
IG
N34
IG
SG
-16V
+16V
-16V
N16
N30
SG
+16V
N15
N72
N73
N13
AG
N57
AG
N57
AG
AG
N32
N38
AG
N31
N30
SG
N35
N62
N62
SG
IG
AG
SG
AG
W17
3417
N47
AG
N36
X4
N10
N10
SG
X2
N18
N18
X60
N16
X10
SG
X45
IG
X62
-35VDC
-35VDC
1TWEEET_MINI
X28
-16V
X22
N34
IG
SG
X39
-16V
+16V
X56
N47
N47
X30
-35VDC
-35VDC
X14
-16V
X50
N16
X37
N30
SG
-35VDC
X34
N15
N72
N57
X43
N73
N13
X16
-35VDC
-35VDC
+35VDC
X35
+35VDC
N57
AG
X32
AG
X52
SG
SG
X13
AG
AG
N32
N38
X20
AG
N31
X51
1
XC9
XC2
XC3
EC6
XC59
EC4
XC57
N30
X54
X1
SG
X17
N35
X3
N62
X59
N62
SG
X58
X5
IG
X61
XC5
XC14
1
XC43
1
XC31
XC33
XC61
1TWEEET_MINI
X33
X15
X29
AG
X8
X25
X47
X55
XC52
XC6
XC66
XC67
XC40
1
XC47
1
XC48
SG
X19
SG
SG
X18
-35VDC
-35VDC
X26
AG
X12
X40
X57
X11
1
XC20
1
XC22
1
XC49
1
XC55
1
BEC1
X44
+16V
+16V
X21
X42
N47
AG
X41
X31
ERNIE
W18
3417
N31
N31
-16V
X48
X53
X36
X9
X38
XC58
1
2
TJH2
1
XC38
P4:B
P2:B
1TWEEET_MINI
1TWEEET_MINI
1TWEEET_MINI
-16V
+16V
-35VDC
XC4
1
XC21
1
XC29
1
XC26
XC50
XC10
1
XC44
P3:B
P1:B
XC15
1
XC19
XC60
1
XC54
1
XC53
1TWEEET_MINI
-16V
BERT
1
2
TJH1
1
XC37
1
XC23
"STYLE_P28"
N
C
V
_
IN
+
V
_
IN
-
M
U
T
E
G
N
D
N
C
N
C
(+
)
V
-
O
U
T
P
U
T
N
C
V
+
1
1
1
0
9
8
7
6
5
4
3
2
1
LM3876T
9
10
11
12
13
MODEL(S):-
DATE
VER#
DESCRIPTION OF CHANGE
#
1
2
3
4
5
6
7
8
Added test points, fixed routing
BEFORE ASSEMBLY NEW TAB HOLE SIZE
5.00P1.1
5.00P0
.
10-JUL-2003
22-SEP-2003
.
PC#6346 R21,ZD4 MOVED DOWN
PC#6248 #3417 BRKTS MOVED DOWN .010
DELETE D11->D14, C12 15P->27P
GROUNDS UPDATED, RCA JKS WIRES->JMPR
POTS CHANGED TO STYLE 28
.
2.00
1.0P3
1.0P2
.
1.P0
.
23-NOV-2000
20-APR-2000
APR-2000
.
50KB/50KW
X578 PCB DATABASE HISTORY
PC#____ DERIVED FROM M512
JAN-2000
REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED
PCAD2002 REDRAW,16V MIC PHANTOM,EFX GND REREF
5.00P1
2-SEP-2003
07-FEB-2001 2.10
PC#6316 50KW C38 150N->220N
18-APR-2002 3.00
NEW PADS FOR FUSEHOLDER
08-NOV-2002 4.00
PC#6576 RESIZE TO ALLOW SHEARING
7
4
1
9
2
3
5
6
8
13
10
11
12
D
D
07-JUL-2009
9-FEB-2004
D
N
N
ADDED SCORE AND REMOVED SOME ROUTES
Corrected J7 to be #3523
Moved F1 to give room to W7
D
D
D
24-MAY-2005
MAR-01-2005
11-DEC-2003
25-NOV-2003
N
N
PC#6904: ADD TARGETS TO CORNERS OF THE BOARD
GT:FIXED AC CE CLEARANCES
Fixed position of shear holes
Change copper pour by X27 to stop the perception of a short
V
V
6.20
5.00
5.00P1.2
V
V
V
6.00
5.00
5.00
6.10
09-JUL-2015
VO7
N
Board changed from single to double sided.
REF
KNOB
MODEL(S):-
FUNCTION
POT/SW YS#
POTENTIOMETERS/SWITCHES AND KNOBS
R
R
R
R
R
R
R
R
F
F
F
F
F
F
F
F
P
P
P
P
P
P
P
P
K
K
K
K
K
K
K
K
P1
GAIN-1
#4418
#8641
P2
TREBLE
#4420
#8641
P3
#8641
5OKB/50KW
M578A/M578B {TITLE}
P4
GAIN-2
#4417
BASS
#8641
#4420
7
4
1
9
6
3
2
5
8
19
16
13
10
MODELS:
18
15
14
17
20
12
11
# COMP#
C
C
C
P
P
P
10K 4829
NotStuffed
27P 5404
P
P
P
4K7 4827
100N 5314
47P 5408
P
P
P
P
P
P
P
C
C
C
C
C
C
P
P
P
P
P
P
NotStuffed
2K7 4864
3N3 5428
220N 5318
47N 5308
0R0 4599
P
P
P
P
P
P
2K2 4847
3K9 4850
1N5 5424
100N 5314
68N 5310
4K7 4827
P
P
P
P
P
P
P
P
P
P
P
P
P
50KB
P
P
P
P
P
P
P
{MODEL D}
M578B
P
P
P
P
P
P
P
P
P
P
P
P
P
{BOARD D}
50KW
{MODEL C}
M578A
{BOARD C}
MULTI VALUE PARTS
_C11
_C20
_C21
_C22
_C23
_R29
_R30
_R31
_R32
_X63
_X64
NotStuffed
NotStuffed
Stuffed
Stuffed
11
8
5
2
#
13
10
12
9
7
4
1
6
3
PENDING CHANGE
PC#
MODEL(S):-
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
X
X
X
X
X
X
X
X
X
X
X
X
X
50KB, 50KW
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
X578 PENDING CHANGES
