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BALANCED INPUT
FILTER
C53
V+
25V 100n
C40
LREF
V-
TO PIN 4 OF MC33078
25V 100n
R111
82K5
C66
LEFT CHAN
47K
R87
220p
LREF
1K54
9K760
9K760
C41
JB5
16v
33n
16v
R90
R95
R94
2
MC33078
C64
LIN_XLR
3
1/2
1
220p
C61
NUTRIX
3
U6
16v 330n
16v 330n
1
2
C63
LREF
C65
LREF
220p
220p
R92
9K760
9K760
JB3 1
3
5
1K54
R91
R93
TP7
LIN_PH
S
R
T
NO_GOLD
2
4
6
S3
L
M
R
MONO-STEREO-BRIDGE
COM
1
2
3
4
S3
STEREO,MONO: RSIG = RSPOST
L
M
R
COM
BRIDGED: RSIG =
13
14
15
16
10R
S3
R83
L
M
R
COM
LPOST
5
6
7
8
10R
R86
C36
RIGHT CHAN
RREF
V-
TO PIN 4 OF MC33078
25V 100n
C39
V+
25V 100n
NO_GOLD
2
4
6
S
R
T
C70
RIN_PH
R88
82K5
220p
47K
R100
JB4 1
3
5
RREF
1K54
9K760
9K760
C43
16v
33n
16v
R102
R108
R106
MC33078
C68
JB6
RREF
1/2
220p
C59
3
U7
2
16v 330n
16v 330n
1
RIN_XLR
3
2
R109
1
NUTRIX
RREF
220K
C67
C69
220p
220p
R104
9K760
9K760
1K54
R103
R105
TP3
V+
GND_LIFT
SW3
SW3
X3
LREF
C51
1
4
25V
OUT
OUT
100n
2
5
RREF AND LREF CONNECT TO
IN
IN
3
6
LVGND AT THE INPUT JACKS
C71
22n
C52
25V
X4
RREF
100n
V-
WC8
LVGND
M1088.SCH_DATABASE_HISTORY
MODEL(S):-
AP-800
#
DATE
VER#
DESCRIPTION OF CHANGE
1
MAY/30/95
1.10
PC#4806__R126R/R130R__47R-->75R
2
JUN/21/95
1.20
DC_VOLTAGES_ADDED_TO_SCHEMATIC
3
JUN/26/95
2.00
PC#4848_R50L/R_R46L/R_158R-->475R
4
.
.
C29L/R_C30L/R__47N-->10N--ADD_4148
5
.
.
DIODE_IN_SERIES_WITH_D11L/R_AND
6
.
.
D16L/R_ADD_475R_FROM_EMITTER_Q14,
7
.
.
Q21_TO_THE_BASE_OF_Q8_ALSO_FOR_Q15,
8
.
.
Q23_TO_THE_BASE_OF_Q9
9
AUG/14/96
2.10
PC#5189_C65,C66,C69,C70_27P-->220P
10
D
V
N
All manuals and user guides at all-guides.com
V+
LCLP
6
TP1
7
D30
C58
V+
4148
5
U6
16V
33u
M1090
1/2
MC33078P
(4=V-,8=V+)
LVGND
C42
VOLUME CONTROL
33n
BOARD
R113
LVGND
V-
IN
4M7
OUT
C60
V-
FILTER SWITCH
LSPRE
R112
-1dB 6Hz
220K
-1dB 40Hz
V+
LIMITER
CABLE HEADER
12Db/Oct
LREF
6
IN
U10
1
5
OUT
RSPRE
1
14
4
LSPRE
2
13
SW1
LIMABLE
R84
RSIG
3
12
33K
RSPOST
4
11
LIMABLE
5
10
RSIG
RREF
LCLP
6
9
LSPOST
RCLP
7
8
RSPOST
(4=V-,8=V+)
MC33078P
FOURTEEN
LSPOST
1/2
5
U8
CONDUCTOR
7
LREF
TP6
RSPRE
6
RIBBON
10K0
10K0
CABLE
R99
R98
C56
RREF
16V
33u
D29
6
FET_CNTL
7
4148
5
U7
1/2
MC33078P
(4=V-,8=V+)
C44
AMPLIFIER SHUTDOWN CIRCUIT
33n
R110
IN
16v
4M7
500mW
D28
OUT
C62
D34
R101
R89
FILTER SWITCH
1M
390K
D5
-1dB 6Hz
(4=V-,8=V+)
+16V
MC33078P
-1dB 40Hz
V+
1/2
3
U8
12Db/Oct
R85
1
-15V
2
1M
100n
R77
25V
33K
C50
LVGND
PIN 1
MC1
WC9
FET_CNTL
1
2
KILL
RGT_THRM
3
LFT_THRM
4
CHASSIS
5
6
TO
LVGND
7
V+
M1091
V-
8
R120
10K
LVGND
V+
V-
ISOTHERMAL TO LEFT HEATSINK
LOG
11
12
13
14
15
16
2.50
PC#6609_C54R/C55R_220u->330u
17
18
19
20
21
22
23
24
25
LCLP
TO LEFT
CHAN AMP
R23L
R24L
LSPOST
82K5
82K5
C73L
LREF
27p
LOG
R31L
R96L
MC33078
Q29L
2K
2N5638
1/2
100K
-16V
C72L
3
U1L
R134L
16V
1
LOG
33u
TO PIN 4
2
33n
R135L
OF U1R
25V
CLIP
10R
10R
C49L
C74L
D49R
SENSE
27p
4148
LOG
OPTOLED
D47R
6
1
R26L
R27L
4148
5
2
82K5
82K5
R79R
D45R
4
4N35
1K5
4148
LREF
D46R
U4R
U4R
RREF
4148
LVGND
LREF
RCLP
R32R
R33R
LSPOST
V-
37K90
3K160
V+
R23R
R24R
LVGND
RSIG
MC33078
R28R
FET_CNTL
82K5
82K5
1/2
1K0_1%
3
C73R
U2AR
1
27p
2
ROG
C19R
C20R
MC33078
15n
100p
R96R
33u
Q29R
1/2
2N5638
100K
5
U1R
MC33078
16V
7
R134R
1/2
C72R
6
5
U2BR
33n
R31R
7
R135R
25V
2K
6
C49R
10R
10R
C74R
MC33078
27p
ROG
1/2
ROG
3
U2BR
1
R26R
R27R
2
82K5
82K5
MC33078
RREF
1/2
5
U2AR
7
6
-19V
R34R
D43R
33U
16V
C17R
4K590
Q31R
BC550
ROG
WC3
VH+
D44R
VH+
VH+
Q30R
BC560
WC2R
PS_GND
X2
PS_GND
ROG
WC2L
R35R
PS_GND
X1
PS_GND
324R0
LOG
WC1
C18R
VH-
180p
VH-
VH-
R119
10K
ROG
ISOTHERMAL TO RIGHT HEATSINK
MJL1302A
MJL21193
MJL3281A
MJL21194
BT139
BC550C
MPSA13
MPS4991
BC560C
MPSA63
E B C
C B E
B
C
E
B
C
E
D38R
1N4004
TO PIN 8
BAV21
D13R
OF U1R
TO PIN 8 OF U2R
R39R
+BAT
910R
V+
+16V
4V7
1N750A
C48R
C45R
16V
16V
ZD9R
100n
100n
R41R
BYPASS CAPS
442R
C47R
C46R
V-
16V
16V
ONLY!
100n
100n
-BAT
D54R
30V
TO PIN 4 OF U2R
500mW
D55R
D36R
ROG
AMPOUT
D11R
D12R
BAT85
7K5
+BAT
R131R
+16V
OPTOLED
R73R
D9R
8K25
Q34R
BAT85
BC560
1
BC550
R76R
-BAT
16V/1W
D50R
2
75R
47K
BZX79
+16V
R130R
D41R
Q33R
Q25R
U3R
Q8R
A13
C25R
BC550
25V
D51R
470u
R37R
2K32
AMPOUT
7V5
R29R
500mW
D52R
1K
C26R
25V
7V5
470u
500mW
R136R
Q24R
D53R
A63
100K
R132R
D10R
16V/1W
7K5
BZX79
R30R
+BAT
Q9R
R78R
D40R
47R
47K
BC560
+16V
6K19
R133R
Q32R
+BAT
R75R
-BAT
D42R
BC550
47R
R126R
R71R
D27R
75R
8K25
R124R
D16R
2K43
R74R
D56R
100R
Q7R
D15R
RT1R
47R
LIN
D57R
BAT85
R36R
BC550
4K7
4V7
R38R
IN5257A
475R
30V
ZD8R
D21R
500mW
ROG
R44R
D35R
442R
BAV21
2%
LONG TERM CURRENT
ONLY!
R127R
LIMIT SENSING
R42R
8K2
V+
CIRCUIT
910R
D39R
1N4004
R128R
+16V
43K
6
6
5
5
4
4
4N35
4N35
U3R
U3L
R114
R117
47K
47K
0V
D32
Q20
BC550
D33
C34
C35
R118
R116
16V
16V
2M2
2M2
2u2
2u2
R115
100K
LVGND
LVGND
NOTES:
NOTES:
ADJUST RT1R FOR
ALL UNMARKED DIODES ARE IN4148
10mV BETWEEN
TP2
TEST POINT
TP4 @ TP5
ALL DC VOLTAGES MEASURED
WHILE AMP IS
IN 4 OHM MODE
WITH REFERENCE TO GROUND
AT 120VAC
MEASURED @ 120VAC IN 4 OHM MODE
+71V
VH+
C55R
C37R
100V
100V
330u
100n
R49R
ROG
6190
2%
+33V
MR854
R82R
D19R
+1.1V
5K9
R129R
Q22R
1R
MJL3281A
R63R
+0.55V
390R
Q12R
Q14R
Q21R
C29R
25V
10n
R50R
MJL21194
MJL21194
MJL21194
475R
ROG
R140R
475R
R137R
ROG
475R
TP5R
R81R
R48R
R121R
R51R
R122R
5K9
562R
0R1
0R1
0R1
R107R
R11R
R52R
R54R
R123R
R47R
33R
0R1
5K9
0R1
0R1
562R
R138R
475R
TP4R
R139R
475R
R46R
475R
-0.55V
C30R
Q13R
Q15R
Q23R
25V
C33R
10n
R62R
47n
MJL21193
MJL21193
MJL21193
390R
MR854
R125R
Q10R
D20R
R70R
1R
MJL1302A
7R5
-1.1V
R69R
7R5
R80R
5900
ROG
-33V
R45R
6190
330u
C38R
-71V
100V
100V
VH-
C54R
100n
ROG
R58R
33K
16v
C57R
DIAC
10u
AP_800
DATE:
MAY/28/2003
MODELS:
-
_
YORKVILLE
NAME:
M1088.SCH
PCB#:
M1088
TITLE:
NOTE:
NOTE:
LAST R = R140
V+ = ~+16VDC
LAST C = C74
V- = ~-16VDC
LAST D = D57
LAST Q = Q34
LEFT = A CHANNEL
LAST U = U10
RIGHT = B CHANNEL
LAST J = J109
SPEAKER
OUTPUT
BINDING POS
SPEAKON
1
+
1
2
-
-
2
+
3
B_OUT
SPEAKON
3
W
4
2
+
-
-
1
2
+
1
WC4
BRIDGE
L1R
4uH
R57R
5W
1R8
100V
Q18
MAC15A6FP
G
R67R
100R
Q19R
MBS4991
8V
SCH ISSU
INPUT/PW
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