I had an old StarFlite brief case lying around a decided to make it into a portable boombox. All together this project cost around £25 because i didn't have to buy any speakers or suitcase, it took about 5 hours to make and has incredible sound quality. Check out my youtube channel for sound tests and other suitcase boombox products which i will be making: https://www.youtube.com/channel/UCBq_aTwyhqhlFm9sIjATLMw
1. StarFlite brief case (Had one lying around)
2. Hossen 12v amp (Amazon)
3. 12v sealed lead acid battery 2Ah (Amazon)
4. One aiwa 8C-NS7-604 13cm speaker (lying around)
5. Two 10cm panasonic speakers (lying around)
6. All tweeters already connected to speakers.
Step 1: Reinforcing
First problem i had was the sides of the case couldn't hold the speakers, so i measured and cut out sides using ply wood. I then varnished them to give it a better look. Using a hegner saw i cut out the inserts in which the speakers would sit in.
Step 2: Connecting Wires
It was pretty simple connecting all the wires because most of them were already soldered together. I bought a 12v dc input and striped the mains side to get a positive and negative wire, using spade connectors they both slotted onto the battery and the other end went into the dc input on the amp. I also connected a aux cable so i could play music off my phone.