Active CrossOver Circuit
The circuit using active component to operating. In this case, the active component is IC NE5532 or TL072 as a linear part. With 15 V power supply, this circuit separate the low out and high out. The low out connected to a woofer, and high out in tweeter.
Note: This active crossover circuit is going to placed before amplifier circuit.
Circuit Parts
R1_________________________________100Kohms
R2,R3,R4,R5,R6______________________37.5ohms [33K+4.7K]
R7_________________________________75Kohms[150K//150K
R8_________________________________N.C
R9-R16_____________________________10Kohms
R17,R18____________________________47Kohms
R19,R20____________________________47ohms
TR1________________________________100Kohms trim. or pot.
TR2,TR3______________________________47Kohms trim. or pot.
C1_________________________________4.7uF/100V MKT
C2,C3,C4,C5,C6,C7,C12,C13____________1nF 100V MKT
C8,C9,C10,C11,C14,C15________________100nF 100V MKT
C16________________________________2.2uF/100V MKT
C17________________________________470nF 100V MKT
C18,C19_____________________________47uF/25V
J1,J2,J3_____________________________2pin conn. 2.54mm pin step
J4_________________________________3pin conn. 2.54mm pin step
IC1,2,3______________________________NE5532 , TL072