Monday, February 23, 2015

MCINTOSH MA6900 TONE CONTROL CIRCUIT

MCINTOSH MA6900


TONE CONTROL CIRCUIT 

TONE COTROL COMPONENTS
C1 C2  CAP M POLY .1UF 10% 100VDC
C3 C4  CAP ELECT 10UF 16V (4X5 CASE)
C5 C6  CAP MONO 220PF 100V 10% NPO
C7 C8  CAP MONO 47PF 200V 10% NPO
C9 C10  CAP MONO 22PF 200V 10% NPO
C11 C12  CAP ELECT 220UF 25V
C13 C14 C33 C34  CAP ELECT 47UF 50V
C15 C16 C43 C44 C45 C46 C54  CAP ELECT 10UF 50V
C17 C18  CAP M POLY .047UF 5% 63VDC
C19 C20  CAP ELECT 1.5UF 10% 50V
C21 C22  CAP M POLY .01UF 5% 63VDC
C23 C24  CAP M POLY .47UF 5% 50/63VDC
C25 C26  CAP MPOLY .0033UF 5% 63VDC
C27 C28  CAP M POLY .15UF 5% 63VDC
C29 C30  CAP POLY 0.001MF 5% 63VDC
C31 C32  CAP M POLY .033UF 5% 63VDC
C35 C36 C37 C38  CAP M POLY .22UF 5% 63VDC
C39 C40 C41 C42  CAP MONO 470PF 100V 10% NPO
C47 C48 C49 C50 C51 C52  CAP MONO .1UF 50V 20% Z5U
C53  CAP ELECT 47UF 10V BP
D1 D2  DIODE SILICON
IC1 IC6 IC7  IC DUAL OPERATIONAL AMPLIFIER
IC2 IC3 IC4 IC5  IC OPERATIONAL AMPLIFIER
J1  CONN 8 POS MALE FRICTION LOCK
J2  CONN 4 PIN
J3  CONN MALE 6 POS RT ANGLE
K1 K2 K3  RELAY REED FORM 1A 5V 500 OHMS
R1  POT 50KAX2
R2  POT BALANCE 2KOHM
R3 R4 R5 R6 R7  POT EQUAL
R9 R10  RES MF 2.21K 1% 1/4W
R11 R12  RES MF 3.32K 1% 1/4W
R13 R14  RES MF 475K 1% 1/4W
R15 R16 R19 R20  RES MF 1K 1% 1/4W
R17 R18  RES MF 10K 1% 1/4W
R21 R22 R45 R46  RES MF 2.74K 1% 1/4W
R23 R24 R27 R28 R31 R32 R35 R36  RES MF 681 1% 1/4W
R25 R26R29 R30 R33 R34 R37 R38 R43  RES MF 100K 1% 1/4W
R39 R40  RES MF 475 1% 1/4W
R41 R42  RES MF 40.2K 1% 1/4W
R44 R51 R52  RES MF 100K 1% 1/4W
R47 R48  RES MF 33.2K 1% 1/4W
R49 R50  RES MF 22.1 1% 1/4W
R53 R54  RES MF 100 1% 1/4W
R55 R56 R57 R58  RES MF 10 1% 1/4W
CIRCUIT DIAGRAM 
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