TDA2822 make for Subwoofer Power Amplifier

This circuit is about power amplifier based on IC TDA2822 and make it for Subwoofer Power amplifier. By using subwoofer filter that processed by IC op-amp JRC 4558 , the power amplifier TDA2822 has output speaker be Low Frequency or Just Bass output. See TDA2822 make for Subwoofer Power Amplifier Circuit Diagram Below.


In the above circuit schematic circuit actually only the combination of