DIY Mini Speaker

To build a low-cost speaker yourself,
we first need to know what materials are needed. For beginners like me, all we need is for the speaker to make a sound.
We need a sound-producing element, which is the speaker,
a power amplifier, and a cabinet.
Power amplifiers are available online, and we can also make one ourselves. This project focuses on building a power amplifier.
 
What are the circuit modules on this amplifier board?
1. First, no matter what board you make, the first thing you need to do is the power module! This supports three power input methods: Type-C input, DC power socket with an inner diameter of 2.5mm, and screw-type terminal blocks/5mm 1x2P.
 
This supports 12V and 5V voltages.
The second is the preamplifier
input module
 
, the most important amplifier chip circuit module.
 
Physical demonstration and
 
 
 
 
notes: The outer casing cannot be used directly and needs modification!