Tuesday, February 4, 2014

Simple Electronic Circuit Car Subwoofer Filter

RealAutoTips. - There are many car that completed with good audio sound system now. It is used to give satisfy for driver when they are drive a car. With good quality audio also will make a car look exclusive and high level.

There are also quality of the car audio now with good basses. With use subwoofer system audio will open  good bass sound and look like good and exclusive car. And now when you want to make simple car subwoofer filter for your car, in here we will show you one of simple electronic circuit for car subwoofer filter.

Circuit Schematic

Figure 1. Simple Circuit Car Subwoofer Filter (Source: Circuitstoday)

Component Lists
  • The main component in circuit schematic car subwoofer filter above is TL072 as dual BIFET opamp IC.
  • All component like in figure 1 above.


Figure 1 above show us simple subwoofer filter that can be operated from a 12V DC supply. Such a circuit is very useful in automobile subwoofer applications. The circuit is nothing but a low pass filter whose pass frequency can be adjusted between 60 to 160 Hz. The circuit is designed around the TL072 dual BIFET opamp IC. 

Out of the two opamps inside the chip, IC1A is wired as a buffer. The left and right audio inputs after mixing is fed to the input of the IC1A using the DPDT switch S1. Switch S1 is the phase control switch which can be used to make the subwoofer in phase with other speakers. When S1 is in position 2, 180 degree phase shift will be induced.POT R7 can be used for controlling the level. IC1B forms the low pass filter whose pass frequency can be controlled by adjusting the dual gang POT R13. (Source:Circuitstoday)

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  1. Really big thanks for this nice information! Now i can make some kind of documentation to this application. Also check this my blog


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