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1
2
3
4
5
C10 47UF
6
7
8
A
-BAT
-BAT +BAT GND C11 47UF R17 R18 11 -BAT R45 2.2K R44 100R R43 100R 1 3 2 GND R23 R24 R21 10K 10K 10K 10K R67 56K 5 6 11 R19 R20 10K 10K 10K 10K C13 100PF 3 2 11 4 U2A TL074 1 W
+BAT
4
R1 2.2K B 3 3 C2 10UF 2 1 Q2 2N4403 Q1 2N4403 2 1
3 2 11
1
R9 2.2K
10 9
4
R61 18K
R62 18K
+BAT U1A TL074
+BAT
R63 18K
R64 18K
+BAT U1C TL074 8
-BAT R65 20K
3
-BAT R47 2.2K R48 100R
C6
10UF
2 1
Q8 2N4403
Q7 2N4403
3
2 1
A Format Mic Input Pin 1 = LFU Pin 3 = LBD Pin 5 = RBU Pin 7 = LFD 1 2 3 GND 4 5 GND 6 7 GND 8 GND D J1 MLXM8
R50
2.2K R2 15K GND GND
C1 100UF
R3 100R
R59 15K +BAT
R4 100R R46 100R 1 3
R49
2.2K R10 15K GND GND
C
2
C5 100UF
R11 100R
R60 15K +BAT
R12 100R
B Format output to UHJ encoder +BAT 4 U2B TL074 7 X R33 R34 R35 R36 47R 47R 47R 47R GND J3 MLXM5
GND
1 2 3 4 5
-BAT
-BAT
R22
R66 -BAT 56K
GND +BAT R56 18K R57 18K 5 6 11 +BAT 4 U1B TL074 7 +BAT R53 18K R54 18K 12 13 11 +BAT 4 U1D TL074 14 C12 47UF R31 R32 R29 R30 10K 10K 10K 10K R69 56K 12 13 11
C14 47PF GND +BAT 4 U2D TL074 14 Y
1 2 3 4 5
J2 MLXM5
R5 2.2K
R13 2.2K
B Format output to panel socket
3
3
E
2 1
2 1
C8
10UF
R39 2.2K R38 100R 3 R52 2.2K
2 1
Q6 2N4403
Q5 2N4403
3
C4
10UF
Q4 2N4403
Q3 2N4403
3
-BAT
2 1
-BAT R42 2.2K R41 100R
R70 -BAT 56K
R51
2.2K R6 15K GND GND
+BAT
R37 100R 1
2
GND
F
GND GND
+BAT
R40 100R 1
3
C3 100UF
R7 100R
R58 15K
R8 100R
C7 100UF
R14 15K
R15 100R
R55 15K
R16 100R
GND
2
C15 47PF
GND C9 47UF
R28 Power input from battery J5 MLXM5 1 2 +BAT 3 4 GND 5 -BAT Power output to UHJ encoder J4 MLXM5 1 2 +BAT 3 4 GND 5 -BAT R25 R26
10K 10K 10K R68 56K
10 9 11
4
R27
10K
+BAT
U2C TL074 8 Z
R71 -BAT 56K
G
GND
C16 47PF
H
mini_sooundfield01 DESIGN: NAME: mini soundfield TITLE: FILE: mini_soundfield01-01.sch Pre-Amps, B-Format Matrix CREATED: 18/08/03 MOD: 27/10/2003 SHEET: 1 OF 2 REV: 1.0 SIZE: A3
ICARUS 07748 766447