audio amp

Hello, I have decided to build my own loud speaker from scratch. That means tha I will be building my own power amplifier. Now I want it to go as loud as it can so about 500W RMS should do it. I want to know are there any sites with schematis of such amplifier and I want a qulity one not...

Need some advice on a tda 2003 audio amplifier. Hi I've built a mono amplifier based on this schematic: https://www.circuitsdiy.com/tda2003-amplifier-circuit-diagram/ However, when I turn on the supply (a 12v hobby supply) I either get lots of popping or humming and if I can stop that by...