We have introduced many nice portable speakers. But if you like making something by yourself, the following handmade retro Hi-Fi portable speaker may be more suitable for you.
Strictly speaking, it’s not an available Hi-Fi speaker, but a detailed introduction that guides you to make the retro speaker. Mattthegamer463, a skillful crafter living in Canada brought us the wonderful project. He used a bookshelf speaker, a rechargeable battery, a circuit board, and some other components to build the portable speaker. As we can see from the images, the added handle allows you to take the portable speaker with ease, in addition to built-in rechargeable battery, the integrated DC input lets you power it via AC adapter, of course, the 3.5mm audio output allows you to connect the handmade speaker with various music players.
The maker has published the detailed making process. If you’re interested in making the portable speaker, jump to his instructables page for more details.