This is an easy-to-build all-in-one hexagon wireless bluetooth speaker. The size of the speaker is 9x15.5x18cm. The PCB is an all-in-one board, which includes bluetooth, FM radio, USB thumb drive/MicroSD card MP3 playback and 50W (max) power output. The USB jack can work also as USB DAC to connect with PC.

List of material :

3” full range speaker driver
Sanwu HF183 Amplifier PCB (works with 12-24V DC input)
DC jack
Sound-absorbing cotton
3D printed speaker case

The installation is easy. Simply put all the components inside the speaker case. The trick is speaker cable connection. We will need to connect the negative of the speaker to the negative of left channel of the PCB and positive of the speaker to the positive of the right channel. Under such connect , both left and right channel output can be jammed into the single driver unit.

https://youtu.be/sDxIvQTmOOE (The video was made in Cantonese. Music test can be found on last part of the video.)