Hello:
--★1, TDA2030 made amplifier circuit, there are two kinds of power supply: namely, single-supply type, and dual-supply type. I don't know which type of power supply you use.
--★2, to give you two circuit diagrams, respectively, single-supply power supply, and dual-supply power supply wiring diagrams, dual-channel as long as the same two amplifier channels can be.
▲Single-supply wiring diagram (OTL):
▲Dual-supply wiring diagram (OCL):<Vcc is the positive power supply, Vss is the negative power supply>