Here is new old Music box with few modifications and changes. First of all I removed old Amplifier unit which was ridiculously inefficient and at the same time with very bad characteristic. After searching for new Amplifier circuit I decided to make 10W Amplifier with TDA2003. All i can tell is that was very good decision. It allows low power devices as MP3 ( mV) to reproduce great sound with 6-12V Power supply. With Solar Panels attached on the...
