Inter-M DSA-100D - Manual (Page 13)

DIGITAL SR AMPLIFIER
11 DSA-100D/DV
Block Diagram Block Diagram
PF
C
M
AI
N
P
O
W
ER
(A
C-
D
C)
CI
R CU
IT
CI
R
CU
IT
SP
K
R LY
C
O
N
TR
O
L
ST
+
15
V
ST
-1
5V
FA
N
TH
ER
M
AL
S
EN
SO
R
2
TH
ER
M
AL
S
EN
SO
R 1
FA
N
C
O
N
TR
O
L
CL
IP
L
ED
SI
G
L
ED
CL
IP
L
ED
SI
G
L
ED
SP
EA
KE
R R
EL
AY
BR
I
-
BR
I
+
CH
2
SP
K
+
CH
2
SP
K
-
CH
1
SP
K
+
CH
1
SP
K
-
BR
ID
G
E
2
CH M
O
D
E
sw
itc
h
-I
N
+
IN
H
PF
s
w
itc
h
12
0H
z
12
dB
/o
ct
LP
F
H
PF
s
w
itc
h
12
0H
z
12
dB
/o
ct
-2
0d
Bu
(
77
.5
m
vr
m
s)
G
AI
N
s
w
itc
h
+
4d
Bu
(
1.
22
83
vr
m
s)
-2
0d
Bu
(
77
.5
m
vr
m
s)
G
AI
N
s
w
itc
h
PR
O
T
CI
R
CU
IT
(2
0~
30
M
IN
)
LP
F
D
CP
O
TP
PR
O
T
LE
D
PO
W
ER
S
EL
EC
T
sw
itc
h
R EM
O
TE
P
O
W
ER
PO
W
ER
C
O
N
TR
O
L
O
N
L
ED
ST
BY
L
ED
ST
5V
B+
+
15
V
-1
5V B-
AC
I
N
ST
BY
P
O
W
ER
CO
U
N
TE
R
SI
G
N
AL
S
EN
SI
N
G
D
-A
M
P
H
PF
D
IF
F
AM
P
D
-A
M
P
H
PF
D
IF
F
AM
P
+ - G
BA
LA
N
CE
D
I
N
PU
T
CH
2
IN
+ - G
BA
LA
N
CE
D
I
N
PU
T
CH
1
IN
+
4d
Bu
(
1.
22
83
vr
m
s)
ST
+
15
V/
ST
-1
5V
ST
5V
ST
5V
ST
5V
ST
+
15
V/
ST
-1
5V
ST
5V
DSA-100D