Here I will share a very useful tone control on your power amplifier circuit, using this tone control circuit as a pre-amplifier, making your power amplifier circuit more complete and more comfortable to hear. Below is an overview of the scheme and PCB layout for you to create.
There are some components such as resistors, capacitors, and transistors, which are combined into a tone control circuit in such a way. Note that the J1 connector for the pin is as follows:1. Audio Input from Media Player , Radio/TV/Tape/Mobile Phone/PC/Laptop/etc.
2. Audio Output to Amplifier
3. VCC Source Voltage about 12VDC - 16VDC
For the 2N2222 transistor, you can replace it with transistor C945, C828.
PCB Layout Design Super Bass Tone Control: