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DIY bluetooth speaker with a vintage radio

Last month I was at my aunt’s and I found a vintage radio. I switched it on to check if it stills worked but it didn’t. Radio receiver wasn’t working fine and music had interferences, but I still wanted to do something useful with this radio because I liked its outside design. That’s why I decided to convert it into a Bluetooth speaker.

Buying parts needed

I removed everything from inside and I left only the twitter because I was going to use it in the new speaker. Apart from that, this is what I bought:

  • Another 2W speaker (2€): Existing one had 0.25W. I bought it in a local store.
  • A Bluetooth audio receiver TDA7492P 50W (9€): I looked on the internet and many people build the circuit themselves. I found this circuit on eBay with everything integrated.
  • A switch (1€): A simple switch from a local store.
  • A 9V adapter (Free): I use one from an old Polycom.

Building the Bluetooth speaker

The process was quite easy because the most difficult part is usually building the circuit. My circuit included everything, so I just needed to pull everything together to make it work:

  1. I opened the radio and remove everything useless, I need space for my new circuit and 2 speakers.
  2. I attached speakers to the radio with screws.
  3. I weld 2 pairs of cables in the speakers to connect them to the circuit.
  4. I fixed the circuit to the back of the radio with silicon glue.
  5. I made a hole in the back of the radio to locate the interruptor and I connect cables from the adapter.
  6. I finally connect speakers to the Bluetooth circuit and that’s all!

Final result

Bluetooth speaker works fine with my iPhone 7 and I have also tested it with some Androids and it works too. It is easy to use, you just have to switch it on and the bluetooth receiver creates a network. You can use your phone to connect to the speaker and play some music from any app, for instance, Spotify.

I’ve used 2 speakers with not too much Watts but it sounds great and I it is enough for a room, actually, I’ve placed it in a big living room (50-60 square meters) and it has enough power to hear music even with people talking.

As you can see process is quite easy and with almost 12€ you can do it yourself a bluetooth speaker in a few hours. I know there are a lot of speakers in the market, I’m owning an Aeroskull XS too, but doing it, yourself makes you feel better 😊

Here you can find some pictures of the process and the radio placed near the fire in my village. Perfect place!

Adrián G. is Stephen Fry proof thanks to caching by WP Super Cache