Project of Passive Sub woofer filter Circuit Diagram

This is a Simple Project of Passive Sub woofer filter Circuit Diagram. This circuit not required power supply because is a simple low frequency passive filter. It could be useful if you want to drive an extra sub-woofer from your stereo system.

Passive Sub woofer filter Circuit Diagram

The circuit filters the frequency ranges above the 150Hz. The schematic is calculated to work with a 50 watts audio amplifier, but can be used with higher powers as well. The frequency can be adjusted with 2k2 potentiometer from 50 Hz to 160 Hz.

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