🛠️ DIY 2.1 Mini Speaker Project – Hobby Build

This is my personal hobby project: a DIY 2.1 mini speaker system consisting of two full-range drivers and one subwoofer. The project combines 3D-printed components with salvaged and off-the-shelf parts to create a compact, powerful speaker.

Below is a complete list of components used to assemble the speaker along with the 3D printed parts:

📦 Parts List:

• 1x Power amplifier board salvaged from a Tronsmart Studio speaker
  (Note: The Tronsmart Studio board supports EQ adjustments and Broadcast Mode via the Tronsmart app on App Store / Google Play for multi-speaker connectivity.)
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• 1x 4-inch (95mm) passive radiator
  
   

  

• 1x 3-inch subwoofer speaker (salvaged from a Devialet speaker)

  
   

  

   

   

• 2x 2-inch full-range speakers (Aiyima)

• 1x LiPo battery – 2S 7.4V 2800mAh 25C

  

• 1x USB 2S balance charger
   

  

• 20x M3x4x4 heat-set threaded inserts (plastic)
• 16x M3x5x3 heat-set threaded inserts (plastic)
• 20x M3x8mm tapping screws
• 16x M3x6mm machine screws
• 1x PU leather carrying handle
• 1x ecang sheet
• 1x PU leather sheet (for exterior decoration)
• EVA foam and T7000 glue (used for internal vibration/sound dampening and sealing edges)
• 1x 8mm push-button switch
• 1x ON/OFF rocker switch (for battery charging control)
• 1x USB-C charging port

🎥 Build Demo Video:
[https://youtu.be/qWzSwoVeVWw](https://youtu.be/qWzSwoVeVWw)



Note: This is a short demo of the building process. Unfortunately, I wasn’t able to record the entire build step-by-step.