Wiring Material

This is the simplest Sub woofer Low Pass filter Circuit using uA741 single op amp ic. The schema is very low cost with respect to their work. The cut off frequency of this schema is 25Hz to 80Hz maximum. Using this schema , you can easily design a 2.1 Sub-woofer Speaker System at your own Home. The schema contains very few components.In Pakistan, the cost of this schema with PCB is Rs:45 The same schema 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