This is a general-purpose bass booster circuit. Why should you use this? You are listening to your favorite song. But it lacks many flavors. Friends said No Bass! Buy a new one amplifier right now. Stop... It is true. Your amplifier may less bass. But before buying a new amplifier. Try this, it probably better.
This is a low pass filter subwoofer using IC 324 and some other components.
This car subwoofer circuit set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power.
This is mini subwoofer circuit stereo system for home using low noise LF347, it can select frequency output filter is 60Hz,50Hz and boost up preamplifier. [...]