3 channel microphone circuit using BC550C, BC547, BC557
3 channel microphone circuit
P1,P2,P3______5K
R1,R11,R15____180K 1/4W
R2,R12,R16____2M2 1/4W
R3,R13,R17____750R 1/4W
R4,R14,R18____1K 1/4W
R5____________15K 1/4W
R6____________220R 1/4W
R7____________1K5 1/4W
R8____________820R 1/4W
R9____________150R 1/4W
R10___________100K 1/4W
C1,C6,C8______1µF
C2,C4,C7,C9___100µF
C3,C5_________220µF
Q1,Q4,Q5______ BC550C
Q2____________ BC547
Q3____________ BC557
