A bench power supply is an extremely handy bit of kit to have around for electronics hobbyists, but they can be expensive when purchased from the market.
Subwoofer controller uses a single IC TL072 circuit diagram
Power Amplifier for Horn Speaker
LM3886 Audio Amplifier 1 x 108W ~ Audio Amplifier Circuits
Mini Strong Power Amplifier high voltage Mini Strong Power Amplifier 100W RMS circuito amplificador
Power Amplifier 400 Watt using IC741 and MJ2955/3055
PCB Layout Subwoofer Home Theater
pcb power amplifier 700W
50w mosfet amplifier circuit OCL using K1058 + J162 is easy to build, To use Power Supply +35V -35V at 2A. Power Mosfet must be mounted on heat sink.