BSS Audio FDS 360 - Page 41

41
Fig 20.14 FDS-360 EQ 'E'
Card Schematic
7
BOOST SOA47K
C2 SOA
X1 SOA
BOOSTCUT
+
1 2 3 4 5 6 dB
R2382KS1
R2439K
R2524K
R2618K
R2713K
R2810K
BX2C
SOA
10K10K
R32R33
IC4 353
2 3
1 1
3 2
7
353
IC5
R44R43
10K10K
SOA BX4C
SOA X3
10KR39
13KR38
18KR37
24KR36
39KR35
S282KR34
dB 6 5 4 3 2 1
+
CUT
FLTR3 FLTR4
+
5 6
353
IC5
10K
R42
R41
10K
+
R29
10K
IC4 353
6 5
10K
R31
FILTERINPUT
2 1
1 3 4
4 3 2
4 3
2
R17
CUT
BOOST
5 6 2 3
1
+ +
SOA
R18
4K7
R21
2K2
R20
10K
R19
SOA
R22
SOA
C5 SOA
IC3 353
7
R15
47K
R16
SOA
C6 SOA
IC3 353
FLTR2
R6
6 5
7
1
67
+
R2 10K
R1 10K
C1 SOA
R14
47K
IC1 353
47K
+ +
FLTR1
OUTPUT FILTER
CUT
4 3 2 1
B4 C2
SW
B3 B2 C1 B1
SEND
1 2 3 4
1
PLG1
7
-15V
+15V
CHAN.2SEND
BAND1SEND
CHAN.1SEND
BAND2SEND
BAND3SEND
SWITCHEDSEND
BAND4SEND
14WDILHEADER
-15V +15V
BAND4RTN
0VEARTH
BAND3RTN
BAND2RTN
BAND1RTN
14
B3 B4 B2 B1
B4 B3 B2 B1
R8 SOA
RTN
BOOST
3 2 5
3
1
2
IC2 353
IC2 353
C3 SOA
C4 SOA
R13
SOA
R10
SOA
R11
10K
R12
2K2
R9 4K7
R7R5
+
IC1 353
R3 10K
R4 10K