Bluetooth Speaker

I thought it would be a good and fun idea to make a bluetooth speaker. So I used Fusion 360 to design a speaker.

*This is still a prototype so this design might change*

I used 2 3-watt speakers and a small amp for the actual sound.
Instead of a li-ion battery, I used a 2s lipo as power supply.
Note that the bluetooth receiver works of 5 volt so the 8.4 volt of the lipo would blow that receiver. But... when you connect a step down module up to the receiver it gives a horrible sound due t