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5 4 3 2 1
R27 JP2
68R Power Supply
1 +15V
2 0V
3 -15V
R28
D D
+ + C13 C14 68R
C15 C16 100NF 100NF
220uF 220uF
8
U1A/B
8
J1 C1,13 5 U2A/B C12,24 R13,26 JP1
Signal IN + 7 5 Pre OUT
+
+
1 R1,14 6 7 L/CH
- C4,16 R4,17 1
+
6 2 GND
- C11,23
VR1 R12,25 3 R/CH
2
4
4
LO
C Cut CH/2 C
R3,16 53Hz 800Hz 15Khz
VR2 VR3 VR4 R11,24
R2,15
Low C5,17 Mid C7,19 High C9,21
Boost 0
+
C2,14 C3,15
R5,18 R7,20 R9,22
0
4
4
4
U3A/B U4A/B U5A/B
C6,18 6
- C8,20 6
- C10,22 6
-
+ 7 + 7 + 7
5 5 5
B B
R6,19 Q2.3 Q2.0 R10,23 Q1.95
R8,21
8
8
8
A A
Motronix
Title
Size Document Number Rev
A 1
Date:
MT-3EQ Tone Control 1Pre-AMP
Sheet of 1
5 4 3 2 1