This is the simplest Sub woofer Low Pass filter Circuit using uA741
single op amp ic. The circuit is very low cost with respect to their
work. The cut off frequency of this circuit is 25Hz to 80Hz maximum.
Using this circuit , you can easily design a 2.1 Sub-woofer Speaker
System at your own Home. The circuit contains very few components.In
Pakistan, the cost of this circuit with PCB is Rs:45 The same circuit is
working in my own hand made sub-woofer system. So Try this [Link]
Parts List:
R1,R3,R4 = 10K 1/4W
R2=100K 1/4W
CY1,CY2 = 0.22uF Polyester
C1,C2 = 10uF/25V Electrolytic
IC1 = uA741A Single Op-Amp Ic + 8 Pin Ic Socket
3 Pin Male & Female Connector x 2
2 Pin Male & Female Connector x 1
PCB as in required size 4.5 cm x 3.4 cm
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